Gm rear end casting numbers decode

WebUsing the charts below, you will be able to learn alot about the rear differential in your classic full size Chevy. The gear ratio codes are located on the ...WebThe casting number consists of 6, 7, or 8 digits without any letters. Any letters cast near the 6,7 or 8 digit number are not part of the Casting number. The Block Casting Number designates veries information of the block such as the displacement, the year of production, 2 or 4 bolt main, and also vehicle application. Chevrolet Big Block ... WebHow to tell rear end gear ratio by VIN chevy? The Chevy VIN starts with a “C,” following country code in the 2nd digit. The third digit is the built year, while the fourth digits represent assembly plants. The next digit is a letter or a number. And The final digit is the serial number. How to tell rear end gear ratio by VIN ram? Here are three simple techniques to assist you to figure out what your VIN code is: Step 1. It’s simple to locate your vehicle’s VIN. It’s imprinted on a metal plate placed in the dashboard just above the steering wheel and on a sticker inside the driver’s side door. It’s also on the title of your automobile. Step 2. Only the Julian Day is cast or stamped and to determine the Year you have to go by the casting number that is stamped on the rear of the center section (pumpkin). Here are the 67-68 Nodular rear casting numbers for Firebirds that I have found were used. 67 – 9783393 67 – 9788647 68 – 9793020 Early 69 – 9795107 Late 69 – 9795124Also, after searching, I'm thinking your casting number may actually be 3 725880, not 8 725880, as I did find one link for 3725880. Lighting, eyesight, and grease/dirt, etc can lead to easily misreading the casting number, particularly 3's & 8's. etc. The more common casting number is 3725899. I think. I don't know much more about casting numbers.you can use a '64-72 rear (with the optional G70 leaf type spring rear suspension of course) G70 is the RPO code on the glovebox sticker for leaf type rear suspension. the difference is that the shock mount brackets are not the same as '73-up but thats not a huge deal. '70 and older are 6 lug movie fanfic novels1,873 USA 2 series has the casting number 410409 and the 3 series is number 410408 for 28 spline rears in 2 gens. Jan 28, 2007 #3 protour73 Veteran Member Lifetime Gold Member Sep 21, 2006 6,028 West of Chicago Look on the front side of the passenger tube, about 3 inches or so from the end of the pumpkin section.Jun 16, 2007 · Here are the casting numbers I have personally observed over the decades: 12-Bolt Housing: Casting # 1965 Chevelle 3859140N 1966 Chevelle 3875745N 1967 Chevelle 3894939NF 1967 Chevelle-Late 3917124NF 1968-Early 69 Chevelle 3917124NF 1969 Chevelle 3959038NF 1970-72 Chevelle 3969278NF 10-Bolt Housing: Casting # 1964 Chevelle 3839390N Axle Code Format: aa mmdd fs p where: aa = application code - two alphabetic characters mm = two-digit numeric month (01-12) dd = two-digit numeric day of month (01-31) f = factory plant code G - Detroit Gear & Axle plant s = shift code (1 or 2) p = a positraction manufacturer code, when applicable, is added on a second line.Rear Housing Casting Date Example: D141 - (D = Month, 14 = Day, 1 = Last digit of year (1971)). Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F = Jun G = July, H = Aug, I = Sep, J = Oct, K = Nov, L = Dec Camaro Ring & Pinion Gears Above photo: Notice the "15 41" on the ring gear - this rear end is a 2.73 ratio.1969 Rear end code. I have a rear end with the following codes 2CAM 109 69 W, It cam out of a 1969 Corvette, but I couldn't verify the numbers. I had one person tell me it was a warranty replacement. The confusing part for me is the 2 and the 69 otherwise I would think it is a 3.36:1 1970 Posi built at the warren plant on April 19.The Chevy engine date codes are denoted as follows: 1st digit = month; The next 1 or 2 digits = date The last number = year An example of such a date code is the A72 which means; A = January 7 = 7th 2 = 1962, 1972, 1982, or 1992 Another example is the C106 which means; C = March 10 = 10th 7 = 1966, 1976, 1986, or 1996The date code on a rear end housing is simple to decode. For 1964 through 1970, It includes the month, day and year such as J257. This decodes to October 25, 1967. Month codes are A through L for January through December. Beginning in 1971 the stamped date format changed to a 3-digit number that represents a Julian date.The GM engine serial number is the production code of the engine. This production code will tell you the specifications of the engine. And in some cases, it will even tell you what year and where it was made. In other words, it’s an identification code for the engine. The length and location of the code vary depending on the engine type. oakland press news The date code on a rear end housing is simple to decode. For 1964 through 1970, It includes the month, day and year such as J257. This decodes to October 25, 1967. Month codes are A through L for January through December. Beginning in 1971 the stamped date format changed to a 3-digit number that represents a Julian date.2017. 8. 8. ... Do the numbers cast on the rear end tell anything but date code? Mine has D56 3707306 GM. ... See this link where I decoded ...Jan 27, 2012 · OliverMilano , ITALY:beers:1969 396 SS monaco orange ( 72)468 Vortecpro 585 HP back to street cruiserM20 4 speed - 3.31Prosystems 1000BEST ET 11.62 (with 4.10)BEST MPH 121BEST 60 FT 1.644000 lbs street car1969 El Camino Street Strip467 Vortecpro Tunnel ram 730+ hp TH400BEST ET 10.67 @ 127 1.56 60FT. Save. 1 Small Block Casting Numbers Lookup. 2 Big Block Casting Numbers Lookup. 3 Small Block ...Casting Numbers: 12-Bolt Casting #3969278 - very early 1970s have been reported with #3959038 units. 10-Bolt Casting #3969277. The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason has been found yet why they may have one or the other. Codes below are for Chevelle & Monte Carlo. (Accurate identification using the GM RPO code assumes that the rear end has not been previously modified) The prefix is usually F, G or H when referring to Axle Identification. The list below is a partial list of typical GM RPO Codes, specifically the codes pertaining to Axle Identification, Differential Type and Gear Ratio.Oct 12, 2022 · 0001001 is the unit number for the manufacturer to keep track of the engine during production. F is the code for the Flint, Michigan production plant. 54 means it’s a 1954 engine. YG means it’s a 235ci Corvette engine that comes with a Powerglide transmission. This is an example of the 1954 model year. stable diffusion sampling methods WebWebJoined Feb 14, 2000. 6,094 Posts. #7 · Jan 1, 2017. big gear head said: The 8.5 that fits the 1st gen Camaro came from X body cars. The 8.5 wasn't used in these cars until '72 and ended in '79. The total width is 60 inches. '72 to '75 used the 1310 u jonit. '76 to '79 used the 3R u joint.Sep 19, 2013 · Here is a list of casting numbers, along with their original applications. Generation I Small-Block 10036033 Small Block V8 350, 4-bolt, Goodwrench crate engine, 2-piece rear seal 10051182 Small Block V8 2 bolt, Bow Tie block, 3.75-4.30 bore, 1-piece rear seal 10051184 Small Block V8 4 bolt, Bow Tie, 4.00-4.160 bore, 1-piece rear seal news 12 fios channelThe only number you really need decoded is the one on the axle tube. The C 0X 0506G1 is the code needed. The "E" below the 5 in "0506G1" means it has an Eaton Posi unit. They only made 2nd gen Camaro 12 bolts in 1970. The first gen 12-Bolt rear and the Nova 12 bolts should measure 60 1/4 and the 2nd gen is 61"Modern 15 a11mu-681 11.4V 52.4Wh msi ノート PC 純正 。Modern 15 a11mu-681 11.4V 52.4Wh msi ノート PC ノートパソコン 純正 交換バッテリー 電池 バッテリー パソコン・周辺機器,PCアクセサリー 」の配置を変え、 nyamangallery.com serratedentate5e-9ifpzdmz3Casting Numbers: 12-Bolt Casting # 3875745N 10-Bolt Casting # 3875744N The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason has been found yet why they may have one or the other. Assembly Day - 3rd and 4th numbers 01...313789812 is a typical 57-64 "P" case casting number. The date code you have indicates it was cast late in '65 making it a later over the counter GM replacement part for 55-64 passenger cars and 55-62 Corvette. Is there any stamped info on the opposite side of the case from where the "P" is and is there any info stamped on the ring gear? 57 nutRear Axle Identification (Eaton) Example: 7.17 001250 S-9460 7.17 = Ratio 001250 = Serial Number. S-9460 = Eaton Spec. Number Specification Number is stamped on the Housing Arm. Ratio and Serial Numbers are stamped on the Carrier. Front Axle Identification Engine Serial Numbers (Loadmaster Excluded) Example: 001234 F 56 E455 ho only(c-type axle) 12 bolt 1970 3.36 cok col fb 1970 3.55 cow cox fb 1970 3.55 wv xv gto 455 ho only(c-type axle) 12 bolt 1970 3.55 wh xh gto auto/manual 1970 3.73 none coz fb 1970 3.90 none xk gto auto/manual 1970 3.90 wk yk gto only used with m-21 trans 1970 4.33 none xm gto auto/manual 1961 Corvette VIN Numbers. The last six digits begin at 100001 and run thru 110939. Each Vehicle Identification Number (VIN) is unique to an individual car. For all 1961 Corvettes, the location of the Vehicle Identification Number (VIN) is stamped on a stainless steel tag and secured to the steering column in the engine compartment.The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason has been found yet why they may have one or the other. Assembly Day - 3rd and 4th numbers 01...31 CW 1112 B decodes to CW=3.31:1, 1112=November 12, B is for Buffalo, N.Y.455 ho only(c-type axle) 12 bolt 1970 3.36 cok col fb 1970 3.55 cow cox fb 1970 3.55 wv xv gto 455 ho only(c-type axle) 12 bolt 1970 3.55 wh xh gto auto/manual 1970 3.73 none coz fb 1970 3.90 none xk gto auto/manual 1970 3.90 wk yk gto only used with m-21 trans 1970 4.33 none xm gto auto/manual 2001. 12. 7. ... 14-Bolt Casting Numbers & Stamping #\'s. ... SLOW process of carefully cutting off the spring pad and shock mount from one side of the axle.1967 Chevy Camaro decoding information. First Generation Pictures; Second ... check out and you are looking for matching numbers then the next things to check would be the transmission and the rear end. ... casting number and casting date on your engine. Valid 1967 Camaro Engine Suffix Codes: EI: 396, mt: LH: 230, pg, ar, ac: ML: 327, mt, ar ...10199001 Small Block V8 1993-1995 350, 4-bolt, LT5, Corvette ZR1, 405hp. 10243878 Small Block V8 1996-1997 305, 2-bolt, Vortec truck, roller cam, 1-piece rear seal. 10243880 Small Block V8 1995-1999 350, 4 bolt, crate engines and ZZ4, roller cam, one piece rear seal. Chevrolet Block Identification number locations.Web university of tennessee sorority recruitment 2019. 2. 26. ... First, To Identify Your 14-Bolt Rear Axle, You Can't Go By Year, Make and Model · GM offered more than one axle on multiple models. Chevy and GMC ...How can I Identify my GMC or Chevrolet rear end gear ratio? · The codes are provided by a tag labelled “Service Parts Identification” that's usually located ...Decoding Chevrolet VIN, trim tags ... and Day [25], B ~ Buffalo (G=Chevrolet Gear & Axle, W=Warren, K=McKinnon Industries). See bottom of page for photo examples. Casting Numbers: 12-Bolt Casting #3875745N 10-Bolt Casting #3875744N. The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason ...1974 A and G Body Rear Axle ID : This chart applies to most GM 8.5 10-bolt axles ...The number itself can have 6, 7 or 8 numeral digits. They might look like this “361959” or “3970010” or “14015445”. The block casting numbers do not have any letters in them. There are sometimes other individual letters found on blocks like “GM” or “CFD” for the Central Foundry Division, but they are not part of the block casting number.I have not found any I.D. numbers on the axle tubes, but there is a casting number on the front of the carrier, on the drivers' side, and inline with the axle tube. The casting is "GM1". Just below is the casting number "3790614". Above the axle tube on the carrier is another casting number "E10 3". This axle is from a 1963 Nova 4 door sedan ...OliverMilano , ITALY:beers:1969 396 SS monaco orange ( 72)468 Vortecpro 585 HP back to street cruiserM20 4 speed - 3.31Prosystems 1000BEST ET 11.62 (with 4.10)BEST MPH 121BEST 60 FT 1.644000 lbs street car1969 El Camino Street Strip467 Vortecpro Tunnel ram 730+ hp TH400BEST ET 10.67 @ 127 1.56 60FT. Save.The date code on a rear end housing is simple to decode. For 1964 through 1970, It includes the month, day and year such as J257. This decodes to October 25, 1967. Month codes are A through L for January through December. Beginning in 1971 the stamped date format changed to a 3-digit number that represents a Julian date.2012. 4. 21. ... The identification code should be stamped on the bottom or font of right axle tube either adjacent to the carrier housing or about 8" - 10" ... virtual universal prepaid mastercard CHEVY CASTING NUMBERS. I know that Chevy Casting Numbers are on several sites on the World Wide Web but I thought it would be a good idea to list them here too. I actually went through several lists and made some corrections before making this list. ... Nasty Z-28.com has an excellent block stamping number decoder. CHEVY SMALLBLOCK V-8 ...The big "P" tells you the case is for a posi and I believe the "E200" decodes to May 20th, 1960. The actual unit looks like a posi and you are correct that the teeth count divides to a 4.11:1 ratio. If you look on the end of the pinion gear (the small gear) you should see the numbers "9-37" also identifying the ratio.Its a GM 12 bolt, number cast into the housing on the front passenger side is NF3896838. Cast number on the other side is GM 60. Stamped on the front top of the passenger side axle tube is THB W166 1 E. I did a search in google for the cast number, a few things came up, a few chevy trucks in the 60's to 70's range. Some pictures to helpThere would be a line for the rear axle which would tell you the Eaton model. ... Bottom front of the pumpkin "3826111GM", likely a casting number with "D2" ...The number itself can have 6, 7 or 8 numeral digits. They might look like this "361959" or "3970010" or "14015445". The block casting numbers do not have any letters in them. There are sometimes other individual letters found on blocks like "GM" or "CFD" for the Central Foundry Division, but they are not part of the block casting number.GM 8.2" Rear GM 8.25" IFS Clamshell Front End GM 8.25" Corvette Rear, 1963-1979 GM 8.5" / 8.6" 10 Bolt Rear End GM 8.875" 12 Bolt Car GM 8.875" 12 Bolt Truck GM 9.25" Front GM 9.5" Rear GM 9.76” 12 Bolt Rear, 2014-On GM 10.5” Rear GM 11.5" Rear End GM Dana 60If all of the mounting brackets to put it back into a GM A-body are still on the rearend, then I think you are looking at near $1500 if all in good shape. Still worth $1000 or more if the brackets are missing. The reason the 65-67 is worth more is because they are narrower than the 68-up, about 1 inch less per side. 38Chevy454, Jul 24, 2017 beck brothers yellowstone neal mcdonough Would an axle like this be original on a 74 Chevy K10, or might it have been a swap? On the front driver side, it looks like theres a "GM 55" stamped into the axle. Above the "GM 55", there looks like a dial of some sort : Finally, I see these identification numbers on the rear passenger side webbing. It looks like a "CON?".2015. 7. 20. ... The Differential in this car is a 10' bolt, 8.5" Gm differential that is ... The GM pinion case casting # is 1254333, this number was taken ...It is a 12 bolt rear end, and here is a pic (just one off google that i edited) of what the casting numbers are, and where they are at. If anyone could help me identify my rear-end that would be great. Oh and its not posi. :welcome: A- H218 or H278 (hard to tell 7 or 1) B- CON1 or CONI (hard to tell I or 1) C- 1 2 3 4 5 6 7 8 9 0 D- L1Also, after searching, I'm thinking your casting number may actually be 3 725880, not 8 725880, as I did find one link for 3725880. Lighting, eyesight, and grease/dirt, etc can lead to easily misreading the casting number, particularly 3's & 8's. etc. The more common casting number is 3725899. I think. I don't know much more about casting numbers.1974 A and G Body Rear Axle ID : This chart applies to most GM 8.5 10-bolt axles ...1,873 USA 2 series has the casting number 410409 and the 3 series is number 410408 for 28 spline rears in 2 gens. Jan 28, 2007 #3 protour73 Veteran Member Lifetime Gold Member Sep 21, 2006 6,028 West of Chicago Look on the front side of the passenger tube, about 3 inches or so from the end of the pumpkin section.Rear ends with 3.08 gears came in 7.5/7.625-, 8.2-, and 8.6-inch units; 3.42s only came in 8.2 and 8.6-inch units, 3.73s only in 8.5 8.6-inch units; 4 Series (4L60) 4 Speed Automatic Hydra-Matic RPO Code (s) MN8. Gm 10 Bolt Gear Ratios You might be asking yourself what gear ratio is best for your GM 10 bolt. Transmissions and Drivetrain - rear end part # - is there some decoder or someone who can tell me what this number means. I have the car up on jackstands ...2020. 5. 17. ... I can't figure out these casting digits. ... 20 1974 and GM55 is the corporate 12 bolt axle. what I need help with is "00N2" and "3896889".Jun 16, 2007 · Here are the casting numbers I have personally observed over the decades: 12-Bolt Housing: Casting # 1965 Chevelle 3859140N 1966 Chevelle 3875745N 1967 Chevelle 3894939NF 1967 Chevelle-Late 3917124NF 1968-Early 69 Chevelle 3917124NF 1969 Chevelle 3959038NF 1970-72 Chevelle 3969278NF 10-Bolt Housing: Casting # 1964 Chevelle 3839390N reviewer meaning Sep 19, 2013 · 10199001 Small Block V8 1993-1995 350, 4-bolt, LT5, Corvette ZR1, 405hp. 10243878 Small Block V8 1996-1997 305, 2-bolt, Vortec truck, roller cam, 1-piece rear seal. 10243880 Small Block V8 1995-1999 350, 4 bolt, crate engines and ZZ4, roller cam, one piece rear seal. Chevrolet Block Identification number locations. 2015. 7. 20. ... The Differential in this car is a 10' bolt, 8.5" Gm differential that is ... The GM pinion case casting # is 1254333, this number was taken ...The GM engine serial number is the production code of the engine. This production code will tell you the specifications of the engine. And in some cases, it will even tell you what year and where it was made. In other words, it’s an identification code for the engine. The length and location of the code vary depending on the engine type.1974 A and G Body Rear Axle ID : This chart applies to most GM 8.5 10-bolt axles ... slang for antlers Jan 27, 2012 · With a Foundry Date of December 4, 1968, your Casting Number should be 3917124. Tory ACES Member #1890 Team Chevelle Gold #288 1955 Chevrolet Bel Air Unrestored 15,000 Mile Survivor 1955 Chevrolet Nomad 1964 Malibu SS Unrestored 36,000 Mile Survivor ~ SOLD 1964 Malibu SS 1966 Chevelle SS 396 Unrestored 76,000 Mile Survivor 1968 Camaro 2012. 12. 6. ... These are the stamped axle codes and gear ratios for the rear ends ... Are the rear end codes in that book universal for all GM vehicles ...Oct 12, 2022 · 0001001 is the unit number for the manufacturer to keep track of the engine during production. F is the code for the Flint, Michigan production plant. 54 means it’s a 1954 engine. YG means it’s a 235ci Corvette engine that comes with a Powerglide transmission. This is an example of the 1954 model year. CHECK VIN This is the GMC VIN decoder. Every GMC car has a unique identifier code called a VIN. This number contains vital information about the car, such as its manufacturer, year of production, the plant it was produced in, type of engine, model and more.The date code on a rear end housing is simple to decode. For 1964 through 1970, It includes the month, day and year such as J257. This decodes to October 25, 1967. Month codes are A through L for January through December. Beginning in 1971 the stamped date format changed to a 3-digit number that represents a Julian date.10199001 Small Block V8 1993-1995 350, 4-bolt, LT5, Corvette ZR1, 405hp. 10243878 Small Block V8 1996-1997 305, 2-bolt, Vortec truck, roller cam, 1-piece rear seal. 10243880 Small Block V8 1995-1999 350, 4 bolt, crate engines and ZZ4, roller cam, one piece rear seal. Chevrolet Block Identification number locations.Here's the most accurate way I know to do this. Do just what you did only turn the wheel 20 times while counting the driveshaft revolutions, then divide your driveshaft number by 10 (this is for a non-posi rear, only jack up one side) For a posi rear, spin the wheel 10 times (both sides jacked up) and divide by 10. house djs 2022 You can typically find your RPO code on driver side door panel or glove box. General Motors rear end differentials are referred to by the diameter of the ring gear, i.e. 7.5 inch, 8.5 inch, 10.5 inch. Our experts will help you find the correct ring and pinion set for your particular application. Give us a call at 800-216-1632 to get started. Jan 27, 2012 · OliverMilano , ITALY:beers:1969 396 SS monaco orange ( 72)468 Vortecpro 585 HP back to street cruiserM20 4 speed - 3.31Prosystems 1000BEST ET 11.62 (with 4.10)BEST MPH 121BEST 60 FT 1.644000 lbs street car1969 El Camino Street Strip467 Vortecpro Tunnel ram 730+ hp TH400BEST ET 10.67 @ 127 1.56 60FT. Save. C242 is the casting date. I believe is March 24 , 1972. You did not specify if it was a 10 or 12 bolt housing or if it was original to the car. Therefore, look for the part number, it will be in the web facing forward. 7digits and will start with a "3". If it is truly a 72 unit. the 12 bolt housing will be 3969278.GM RPO Codes, or General Motors “Regular Production Option” codes contain lots of valuable information about your GM vehicle. Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled “Service Parts Identification” inside the drivers door panel or glove box. (Accurate identification using the GM RPO code assumes that the rear end has not been previously modified) The prefix is usually F, G or H when referring to Axle Identification. The only number you really need decoded is the one on the axle tube. The C 0X 0506G1 is the code needed. The "E" below the 5 in "0506G1" means it has an Eaton Posi unit. They only made 2nd gen Camaro 12 bolts in 1970. The first gen 12-Bolt rear and the Nova 12 bolts should measure 60 1/4 and the 2nd gen is 61"Casting Numbers: 12-Bolt Casting # 3875745N 10-Bolt Casting # 3875744N The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason has been found yet why they may have one or the other. Assembly Day - 3rd and 4th numbers 01...31GM RPO Codes, or General Motors “Regular Production Option” codes contain lots of valuable information about your GM vehicle. Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled “Service Parts Identification” inside the drivers door panel or glove box. (Accurate identification using the GM RPO code assumes that the rear end has not been previously modified) The prefix is usually F, G or H when referring to Axle Identification. 2016. 1. 21. ... In this tech tip we'll show you how to identify what type of GM differential you're using by decoding the RPO code (or option code) found on ...3.08:1 to 3.73:1. 12 bolt. EDB30174. 4. 3.90:1 & up. Rear Axle Assembly Codes. The rear axle ratio may be determined by finding the two- or three-letter serial number prefix in the following table. The 1962-63 serial numbers are located on the front, right side of the differential carrier. The 1964 serial numbers are found on the bottom of the ...Here are the casting numbers I have personally observed over the decades: 12-Bolt Housing: Casting # 1965 Chevelle 3859140N 1966 Chevelle 3875745N 1967 Chevelle 3894939NF 1967 Chevelle-Late 3917124NF 1968-Early 69 Chevelle 3917124NF 1969 Chevelle 3959038NF 1970-72 Chevelle 3969278NF 10-Bolt Housing: Casting # 1964 Chevelle 3839390NJun 16, 2007 · Here are the casting numbers I have personally observed over the decades: 12-Bolt Housing: Casting # 1965 Chevelle 3859140N 1966 Chevelle 3875745N 1967 Chevelle 3894939NF 1967 Chevelle-Late 3917124NF 1968-Early 69 Chevelle 3917124NF 1969 Chevelle 3959038NF 1970-72 Chevelle 3969278NF 10-Bolt Housing: Casting # 1964 Chevelle 3839390N C242 is the casting date. I believe is March 24 , 1972. You did not specify if it was a 10 or 12 bolt housing or if it was original to the car. Therefore, look for the part number, it will be in the web facing forward. 7digits and will start with a "3". If it is truly a 72 unit. the 12 bolt housing will be 3969278.1,873 USA 2 series has the casting number 410409 and the 3 series is number 410408 for 28 spline rears in 2 gens. Jan 28, 2007 #3 protour73 Veteran Member Lifetime Gold Member Sep 21, 2006 6,028 West of Chicago Look on the front side of the passenger tube, about 3 inches or so from the end of the pumpkin section.CHEVY SMALLBLOCK V-8 Crankshaft Casting Numbers SBC TWO PIECE REAR MAIN OIL SEALS 1130.......327.......forged..mediumjournal...3.25" stroke 1178.......302.......forged..medium journal...3.00" stroke 1181.......305,350...cast....medium journal...3.48" stroke 1182.......350.......forged..medium journal...3.48" stroke (Accurate identification using the GM RPO code assumes that the rear end has not been previously modified) The prefix is usually F, G or H when referring to Axle Identification. The list below is a partial list of typical GM RPO Codes, specifically the codes pertaining to Axle Identification, Differential Type and Gear Ratio. Traditional BOMs are 6 digits followed by 1 or 2 digits, and start with the numbers 60 or 61. On some tags, the first 2 digits won't appear on the tag, but they must be used to identify the axle. For example, you might see 3994-1 for the BOM, but the 60 has been dropped and the actual BOM is 603994-1.OliverMilano , ITALY:beers:1969 396 SS monaco orange ( 72)468 Vortecpro 585 HP back to street cruiserM20 4 speed - 3.31Prosystems 1000BEST ET 11.62 (with 4.10)BEST MPH 121BEST 60 FT 1.644000 lbs street car1969 El Camino Street Strip467 Vortecpro Tunnel ram 730+ hp TH400BEST ET 10.67 @ 127 1.56 60FT. Save.The Turbo 400 has a very distinct fluid pan. The 400 transmission has a main case of cast-aluminum alloy with a length of 24-3/8-inches long. Its case is essentially smooth. The fluid pan shape is irregular, being likened to distorted Texas state borders. It also uses the same vacuum modulator as the Turbo 350.10199001 Small Block V8 1993-1995 350, 4-bolt, LT5, Corvette ZR1, 405hp. 10243878 Small Block V8 1996-1997 305, 2-bolt, Vortec truck, roller cam, 1-piece rear seal. 10243880 Small Block V8 1995-1999 350, 4 bolt, crate engines and ZZ4, roller cam, one piece rear seal. Chevrolet Block Identification number locations.The casting number consists of 6, 7, or 8 digits without any letters. Any letters cast near the 6,7 or 8 digit number are not part of the Casting number. The Block Casting Number designates veries information of the block such as the displacement, the year of production, 2 or 4 bolt main, and also vehicle application. Chevrolet Big Block ...CHEVY SMALLBLOCK V-8 Crankshaft Casting Numbers SBC TWO PIECE REAR MAIN OIL SEALS 1130.......327.......forged..mediumjournal...3.25" stroke 1178.......302.......forged..medium journal...3.00" stroke 1181.......305,350...cast....medium journal...3.48" stroke 1182.......350.......forged..medium journal...3.48" strokeCasting Numbers: 12-Bolt Casting # 3875745N 10-Bolt Casting # 3875744N The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason has been found yet why they may have one or the other. Assembly Day - 3rd and 4th numbers 01...31 baptismal promises The 62-64 casting number for the posi center case changed to 3789812. The above are all casting numbers for passenger cars. These casting ...The Turbo 400 has a very distinct fluid pan. The 400 transmission has a main case of cast-aluminum alloy with a length of 24-3/8-inches long. Its case is essentially smooth. The fluid pan shape is irregular, being likened to distorted Texas state borders. It also uses the same vacuum modulator as the Turbo 350.Joined Jan 4, 2010. 47 Posts. Discussion Starter · #7 · Oct 1, 2011. Ok, so I have found out its a 12 bolt truck rear end, and doing a calculation, it confirmed that it is a 3.73:1 rear end. This leads me to 2 more questions. This is in a 1956 chevy truck with a 350 hp 327, and a 700r4. What gear ration should be good for this setup as a ... how to set password for bluetooth speaker The GM engine serial number is the production code of the engine. This production code will tell you the specifications of the engine. And in some cases, it will even tell you what year and where it was made. In other words, it’s an identification code for the engine. The length and location of the code vary depending on the engine type.Rear ends with 3.08 gears came in 7.5/7.625-, 8.2-, and 8.6-inch units; 3.42s only came in 8.2 and 8.6-inch units, 3.73s only in 8.5 8.6-inch units; 4 Series (4L60) 4 Speed Automatic Hydra-Matic RPO Code (s) MN8. Gm 10 Bolt Gear Ratios You might be asking yourself what gear ratio is best for your GM 10 bolt. The casting date (the date the center section was cast, not the day the rear end was assembled) is in one of the (4) triangle webs in the around the rear cover and will be letter, (2) digit number - single digit number. Something like A 12 7 which would be January 12th, 67. Or E 18 9 which would be May 18th 19691969 Rear end code. I have a rear end with the following codes 2CAM 109 69 W, It cam out of a 1969 Corvette, but I couldn't verify the numbers. I had one person tell me it was a warranty replacement. The confusing part for me is the 2 and the 69 otherwise I would think it is a 3.36:1 1970 Posi built at the warren plant on April 19.Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads. Find cast numbers. ... GM Fast burn 62 CC 210 CC intake runner angle plug Vortec. 12480005. 346. 0. 2.125/1.625. Gen III LS1 "GTZ" aluminum 38cc angle plug. 12480011.WebNov 27, 2005 · Discussion Starter · #1 · Nov 27, 2005. I have look all over and cannot find the specs on this rear end. Posi or Open. I know it has 3:73 gear since I took the cover off and counted the keys. If anyone have any info on this rearend please pot the results. It came out my 1984 Z28 Camaro 305 H.O. Housing Number: GM 22522676. Axle Code: 6FB C339 1. Two photos from different distances showing the location of the axle housing casting number NF 3917123 X. The GM 5 casting on the driver side is a mold casting identification and will, of course, vary from center section to center section. 1970-1972 ~ N3969277. Anyone having photos of rear end casting numbers with "N" or "NF" or "X" in ... Chevy cylinder head Identification - Small block casting numbers, Big block cylinder head, camel back heads, double hump heads. Find cast numbers. ... GM Fast burn 62 CC 210 CC intake runner angle plug Vortec. 12480005. 346. 0. 2.125/1.625. Gen III LS1 "GTZ" aluminum 38cc angle plug. 12480011.Only the Julian Day is cast or stamped and to determine the Year you have to go by the casting number that is stamped on the rear of the center section (pumpkin). Here are the 67-68 Nodular rear casting numbers for Firebirds that I have found were used. 67 – 9783393 67 – 9788647 68 – 9793020 Early 69 – 9795107 Late 69 – 9795124 frank jackson instagram Cross reference GM parts numbers by entering the part number and selecting the make of the car on the Part Number Search page on GMPartsOnline.net. The site cross references the submitted part number before providing specific details about ...3789812 is a typical 57-64 "P" case casting number. The date code you have indicates it was cast late in '65 making it a later over the counter GM replacement part for 55-64 passenger cars and 55-62 Corvette. Is there any stamped info on the opposite side of the case from where the "P" is and is there any info stamped on the ring gear? 57 nutRear Axle Identification (Eaton) Example: 7.17 001250 S-9460 7.17 = Ratio 001250 = Serial Number. S-9460 = Eaton Spec. Number Specification Number is stamped on the Housing Arm. Ratio and Serial Numbers are stamped on the Carrier. Front Axle Identification Engine Serial Numbers (Loadmaster Excluded) Example: 001234 F 56 EJan 27, 2012 · With a Foundry Date of December 4, 1968, your Casting Number should be 3917124. Tory ACES Member #1890 Team Chevelle Gold #288 1955 Chevrolet Bel Air Unrestored 15,000 Mile Survivor 1955 Chevrolet Nomad 1964 Malibu SS Unrestored 36,000 Mile Survivor ~ SOLD 1964 Malibu SS 1966 Chevelle SS 396 Unrestored 76,000 Mile Survivor 1968 Camaro OliverMilano , ITALY:beers:1969 396 SS monaco orange ( 72)468 Vortecpro 585 HP back to street cruiserM20 4 speed - 3.31Prosystems 1000BEST ET 11.62 (with 4.10)BEST MPH 121BEST 60 FT 1.644000 lbs street car1969 El Camino Street Strip467 Vortecpro Tunnel ram 730+ hp TH400BEST ET 10.67 @ 127 1.56 60FT. Save.GM RPO Codes, or General Motors "Regular Production Option" codes contain lots of valuable information about your GM vehicle. Identify your GMC or Chevrolet rear end gear ratio by the RPO Codes, usually located on the placard labeled "Service Parts Identification" inside the drivers door panel or glove box. queue meaning Here is a list of casting numbers, along with their original applications. Generation I Small-Block 10036033 Small Block V8 350, 4-bolt, Goodwrench crate engine, 2-piece rear seal 10051182 Small Block V8 2 bolt, Bow Tie block, 3.75-4.30 bore, 1-piece rear seal 10051184 Small Block V8 4 bolt, Bow Tie, 4.00-4.160 bore, 1-piece rear sealOnly the Julian Day is cast or stamped and to determine the Year you have to go by the casting number that is stamped on the rear of the center section (pumpkin). Here are the 67-68 Nodular rear casting numbers for Firebirds that I have found were used. 67 – 9783393 67 – 9788647 68 – 9793020 Early 69 – 9795107 Late 69 – 97951241961 Corvette VIN Numbers. The last six digits begin at 100001 and run thru 110939. Each Vehicle Identification Number (VIN) is unique to an individual car. For all 1961 Corvettes, the location of the Vehicle Identification Number (VIN) is stamped on a stainless steel tag and secured to the steering column in the engine compartment.Apr 13, 2018 · The numbers should let you know what gear-ratio came from the factory, the date of production, where the unit was assembled, and whether the carrier is Positraction or not (see charts). Hanging 12 The 12-bolt was used in many vehicles, so rearend mounting is something you need to keep in mind. Joined Feb 6, 2004. 1,918 Posts. #2 · Mar 28, 2006. 12 Bolt codes.. The #3894860NF is the Center Section Casting Number for a 1966-67 12 bolt in a Chevy 2...the D57 is the casting date; April 5th, 1967..the GM9 is probably some kind of corp casting stamp ID...Don't think it matters much as far as you are concerned.WebCasting Numbers: 12-Bolt Casting # N3894939 (narrow early model year), #NF3917124 (wide late model year)* 10-Bolt Casting # 3894938N * (Note: For what it's worth, ALL 67 rear ends I've ever seen were the narrow variety and used the spring cup like 68-72 but were narrower like the 64-66. avida motorhome for sale Sep 19, 2013 · 10199001 Small Block V8 1993-1995 350, 4-bolt, LT5, Corvette ZR1, 405hp. 10243878 Small Block V8 1996-1997 305, 2-bolt, Vortec truck, roller cam, 1-piece rear seal. 10243880 Small Block V8 1995-1999 350, 4 bolt, crate engines and ZZ4, roller cam, one piece rear seal. Chevrolet Block Identification number locations. Casting #3969341NF Casting date looks like D800 Axle tube numbers (front of pass axle tube, midway between centersection and backing plate: C 0X 0506G1 There's an "E" below the 5 in "0506G1". Ring gear has these numbers stamped on it: 1 GM 3853010 11 39 4 70 (3.55 gears) Posi case has EDB-30140 cast into it, and 303 also cast in. Any ideas?Modern 15 a11mu-681 11.4V 52.4Wh msi ノート PC 純正 。Modern 15 a11mu-681 11.4V 52.4Wh msi ノート PC ノートパソコン 純正 交換バッテリー 電池 バッテリー パソコン・周辺機器,PCアクセサリー 」の配置を変え、 nyamangallery.com serratedentate5e-9ifpzdmz3Two photos from different distances showing the location of the axle housing casting number NF 3917123 X. The GM 5 casting on the driver side is a mold casting identification and will, of course, vary from center section to center section. 1970-1972 ~ N3969277. Anyone having photos of rear end casting numbers with "N" or "NF" or "X" in ... 12 week bodyweight workout plan pdf The date code on a rear end housing is simple to decode. For 1964 through 1970, It includes the month, day and year such as J257. This decodes to October 25, 1967. Month codes are A through L for January through December. Beginning in 1971 the stamped date format changed to a 3-digit number that represents a Julian date.3789812 is a typical 57-64 "P" case casting number. The date code you have indicates it was cast late in '65 making it a later over the counter GM replacement part for 55-64 passenger cars and 55-62 Corvette. Is there any stamped info on the opposite side of the case from where the "P" is and is there any info stamped on the ring gear? 57 nutHow do I decode the casting numbers on a 14 bolt rearend? I have numbers, CFD 6 and 3977323 on the housing. The ring gear has the date code 6 83 stamped on it. My fear is that it is the oddball 84/85 type rearend. 1954 3600 Chevy Truck "The Fake Truck" In the Stovebolt Gallery More pix on Photobucket Re: 14 bolt casting numbersWebThe only number you really need decoded is the one on the axle tube. The C 0X 0506G1 is the code needed. The "E" below the 5 in "0506G1" means it has an Eaton Posi unit. They only made 2nd gen Camaro 12 bolts in 1970. The first gen 12-Bolt rear and the Nova 12 bolts should measure 60 1/4 and the 2nd gen is 61" osrs combat bot Decoding Chevrolet VIN, trim tags ... and Day [25], B ~ Buffalo (G=Chevrolet Gear & Axle, W=Warren, K=McKinnon Industries). See bottom of page for photo examples. Casting Numbers: 12-Bolt Casting #3875745N 10-Bolt Casting #3875744N. The casting numbers/letters on rear end housings may have either a prefix or suffix of "N" or "NF" and no reason ...WebWebOnly the Julian Day is cast or stamped and to determine the Year you have to go by the casting number that is stamped on the rear of the center section (pumpkin). Here are the 67-68 Nodular rear casting numbers for Firebirds that I have found were used. 67 – 9783393 67 – 9788647 68 – 9793020 Early 69 – 9795107 Late 69 – 9795124Web1974 A and G Body Rear Axle ID : This chart applies to most GM 8.5 10-bolt axles ... mdi icons