©2014, Full-Size Chevrolet Research GroupEdited by Warren LeunigVersion: Thursday, 12-Nov-2015 09:33:20 EDTEngine Pad Information.Transmission Information.Engine PadThe engine pad was stamped with the engine assembly plant, assembly date and application code. The location of that code was behind the distributor on L6 engines and in front of the passenger’s side cylinder head on V8’s.Typical Engine PadThe format of the engine code remained the same from 1964 through 1970. 1964 Engine Application Suffix Codes PowerGlide 3 speedA/C no-A/C A/C no-A/C-230ci/140HP base L6 BQ B AF A230ci Low Compression BS BA AL AC230ci H.D.

Gm 4 speed transmission saginaw. The number below the shift linkage on the smooth part is.r 9m21. Output housing numbers are h 168. Shifter case number is 6211886. Case number is 3925656.8216 nfcs. Tailshaft number is 352254. Has a yellow 'sh' on the case. Also has a car serial number-824. Muncie Transmission Casting Numbers - Muncie Casting Numbers Front Bearing Retainer 4.356 RETAINER 360806 74-79 (2nd Design) 604932 63 and 3SP 207 bearing 3741458 Cast (3741458) History: 3851326 use 3915020 326 19032 75-79 (1st De.

Clutch -AG AE230ci Low Comp. Clutch -AM AD230ci Taxi - BB - AQ230ci Taxi & Low Compression - BV - AN230ci Right Hand Drive - B - AB230ci RHD & Low Compression - BA - AH230ci COPO 9645 -AU230ci COPO 9801 (Taxi w/A/C) - WG - AV230ci COPO 9804 - WF - AW.B and AM also used for RHDPowerGlide Manual- -283ci/195HP base V8 D C283ci Right Hand Drive D CA283ci Low Compression DA CE283ci RHD & Low Comp. DA CV283ci H.D.

Chassis - CB283ci COPO 9588 DG -283ci COPO 9596 - CC283ci COPO 9631 DD CM283ci COPO 9645 - CW327ci/250HP L30 S R327ci RHD SH -327ci COPO 9557 (240HP) - RS327ci COPO 9588 SN/SP RY327ci COPO 9590 - RZ327ci COPO 9596 SQ -327ci COPO 9631 SM/ST RH/RJ327ci COPO 9645 - RG/RM/RN327ci/300HP L74 SB RBPowerGlide Manual- -409ci/340HP L33 QG QC409ci L33 T.I. QR QQ409ci L33 COPO 9645 - QS409ci/400HP L31 - QA409ci L31 T.I. QN409ci/425HP L31/L80 - QB409ci L31/L80 T.I. 1965 Engine Application Suffix Codes PowerGlide 3 speedA/C no-A/C A/C no-A/C-230ci/140HP base L6 FR FM FL FA230ci Taxi - FK - FP230ci H.D.

Clutch -FF FEPowerGlide Manual- -283ci/195HP base V8 GF GA283ci Right Hand Drive GH GB283ci Low Compression GG GD283ci RHD & Low Comp. GI GE283ci H.D. Free download finaldata enterprise 2.0 serial number.

Chassis or M20 - GC283ci COPO 9565? - GM283ci COPO 9645 - GJ283ci COPO 9670 - GY283ci/220HP L77 GL GK327ci/250HP L30 HC HA327ci/300HP L74 HD HBPowerGlide TH400 Manual-396ci/325HP L35 Roch. Carb IG IV IA396ci Holley Carb LB LC LF396ci Transistor Ignition II IC IW396ci/425HP L78 -IEPowerGlide Manual- -409ci/340HP L33 JE JB409ci L33 T.I. JF JC409ci/400HP L31 - JA409ci L31 T.I. 1966 Engine Application Suffix Codes PowerGlide 3 speedA/C no-A/C A/C no-A/C-without K19 (smog)250ci/155HP base L6 FR FM FL FA230ci Taxi - FK - FP230ci H.D. Clutch -FF FEwith K19 (smog)250ci/155HP base L6 GQ GP FY FV230ci Taxi - GR - FZPowerGlide TH400 Manual-without K19 (smog)283ci/195HP base V8 GF - GA283ci Right Hand Drive GH - GB283ci Low Compression GG - GD283ci RHD & Low Comp. GI - GE283ci H.D.

Chassis or M20 -GC283ci H.D. Clutch -GU283ci COPO 9591 -GN283ci/220HP L77 GL - GW283ci L77 H.D. Clutch -GV327ci/275HP L30 HC - HA327ci H.D.

Clutch -HE/KE?327ci COPO 9669 HY - -327ci COPO 9818 (230HP) -HZ396ci/325HP L35 IG IV IA427ci/390HP L36 - IJ IH427ci/425HP L72 -IDwith K19 (smog)283ci/195HP base V8 GT - GK283ci H.D. Chassis or M20 -GS283ci/220HP L77 GZ - GX327ci/275HP L30 HF - HB396ci/325HP L35 IC IN IB427ci/390HP L36 - IO II. 1967 Engine Application Suffix Codes PowerGlide 3 speedA/C no-A/C A/C no-A/C-without K19 (smog)250ci/155HP base L6 FR FM FL FA230ci Taxi - FP - FK230ci H.D. Clutch -FF FE230ci COPO 9??? - FW -??with K19 (smog)250ci/155HP base L6 GQ GP FY FV230ci Taxi - GR - FZPowerGlide TH400 Manual-without K19 (smog)283ci/195HP base V8 GF - GA283ci Right Hand Drive GH - GB283ci Low Compression GG - GD283ci RHD & Low Comp. GI - GE283ci H.D. Chassis or M20 -GC283ci H.D.

Clutch -GU283ci COPO 9591 -GN327ci/275HP L30 HC KL HA327ci H.D. Clutch/COPO 9819 -KE327ci COPO 9569 HK/KJ - KI/KK327ci COPO 9610 HG - -327ci COPO 9670 -HU327ci COPO 9818 (240HP) HY (with 9669) - HZ327ci COPO 9819 -KA396ci/325HP L35 IG IV IA396ci COPO 9565 (313HP) IY? IW -396ci COPO 9627?? JI JJ?427ci/390HP L36 - IJ IH427ci L36 SS427? - IS IE427ci/425HP L72. IDno 67 ID motors were installed in cars according to recordswith K19 (smog)283ci/195HP base V8 GO/GT - GK283ci H.D. Chassis or M20 -GS283ci/220HP L77 GZ - GX327ci/275HP L30 HF KM HB396ci/325HP L35 IC IN IB427ci/385HP L36 - IO II427ci SS427?

- IF IX427ci COPO 9627 - JK JL427ci/425HP L72. IKno 67 IK motors were installed in cars according to records. 1968 Engine Application Suffix Codes PowerGlide 3 speedA/C no-A/C A/C no-A/C-250ci/155HP base L6 CR CQ CC/CN CA/CM230ci Taxi/Police? CT CL CS CB230ci H.D. Clutch -CK CJPowerGlide TH400 Manual TH350-307ci/200HP base V8 DR/DH DS/DK DO307ci H.D. Clutch -DQ307ci M20 or HD Chassis -DP307ci Low Compression DW - DU307ci COPO 9??? D2 - -307ci COPO 9627 D4 D5?

D6?307ci COPO 9565?? DG/DJ DL -307ci COPO 9??? H3 - -327ci/250HP L73 HJ/HK HM/HN HI327ci H.D. Clutch -HL327ci COPO 9665 -HR.327ci/275HP L30 HC/HG HF/HH HA327ci H.D. Clutch -HB327ci COPO 9665 -HS.396ci/325HP L35 IG IV IA396ci Police IN IF IK396ci COPO 9565 (313HP) IY? IW -396ci COPO 9559 (IZ, I2, I3, I4)396ci COPO 9627 (I5, JB)427ci/385HP L36 - IJ IH/(3S-Canada)427ci L36 SS427 - IS IE/(3T-Canada)427ci L36 COPO 9626 (I6, I8)427ci/425HP L72 -ID.

Engine code for L73 and L30 with TH350, used inlate-year 1968 TH350 test fleet. 1969 Engine Application Suffix Codes PowerGlide TH350 3 speedA/C no-A/C A/C no-A/C A/C no-A/C-250ci/155HP base L6?? BG BA250ci Taxi/Police BO BJ/BL???? BQ BPPowerGlide TH350 TH400 Manual-327ci/235HP base V8 FB/F2/F5 FC/F3/F4 FH FA/FW327ci Low Compression FN -FM327ci Taxi/Police FZ/F6 GA/F7 GB/F8 FG/FY.350ci/250HP L65 HL HM HJ HI350ci L65 Police IM IN IP IL350ci/265HP LM1 HU HV IA HT350ci LM1 Police IX IY IZ IW350ci/300HP L48 HK HN HH/IB?

HG350ci L48 Police IS IT IV IRTH400 Manual- -396ci/265HP L66 J2 (P/G) JQ JN396ci Police JO JP427ci/335HP LS1 LE LB427ci LS1 Police LJ LK427ci/390HP L36 LC LA427ci L36 SS427 (Z24) LI LH427ci L36 Police LF LG427ci/427HP L72 LS LD327 suffix codes with a letter and number indicate usage of a revised distributor.FG Police only. FY Taxi only.Engine Codes Reserved for Use With MA6 Heavy-Duty Clutch(none known to have been produced):L48 - HO, IQ. L66 - JT, JR. LS1 - MA, LY. L36 - MB, MC, LZ. 1970 Engine Application Suffix Codes PowerGlide TH350 3 speed-250ci/155HP base L6 CCG CCH?

CCI250ci Taxi/Police CCM CCK CCLPowerGlide TH350 Manual-350ci/250HP L65 CNU CNV CNO350ci Police CNW CNX???350ci Low Compression CNZ - CNY350ci/300HP L48 - CNR CNQ350ci Police CNS CNT CNP400ci/265HP LF6 - CGR -TH400-454ci/345HP LS4 CGV454ci Police CGS454ci/390HP LS5 CGU454ci Police CGTBlock Casting NumberHere are the engine block casting numbers used for small blocks and big blocks. The casting date on the L6 block is on the right side. It is located on the rear, top left (driver’s side) for all others.

Casting numbers could be used for multiple engine displacements during the same model year. The same block could appear in both 2-bolt and 4-bolt main configurations, depending on application. Multiple casting numbers were sometimes used for the same application in a model year. Block Casting NumbersBore19691970L63.875″–––839.896944–––3073.875″––––4638––3274.0″0010–3504.0″–––––4.094″–272–4004.125″––––––151″4422.3857656–––––427 & 4544.251″––963512. – see note below. A 3844422 block has been found from a early 65 409/400 motor stamped with the JA engine suffix and Wilmington, DE partial vin.Block Casting DateThe block casting date was either cast on the top, back of the block or on the passenger’s side between the freeze plugs.

The 64 and 65 409 blocks, used a date code that stated the day of the year the block was cast. For example, 365 would be the last day of the year, December 31st and 1 would be January 1st. It is located on the top, rear of the block on the passenger’s side.All other blocks used a Month, Day, Year format. The letter is the month the block was cast. A is January, B February, C March, I September, L December. That is followed by the day of the month it was cast and the year. E 13 5 would be May 13th, 1965.

On small blocks, the casting date was located next to the casting number. On big blocks, it was located between the freeze plugs on the passenger’s side.The casting date is usually less than 30 days before the engine assembly date. However, some can be several months earlier or longer. Those cases are rare.Transmission CodesThe transmission code consisted of the type of transmission and the date it was assembled.

The different kinds of codes used will be detailed below. Pretty much all transmissions used the same format for the code except the Turbo 400.For all transmissions except the TH400, these are the transmission type codes used. 1964 Muncie 4-speed code location. Driver’s side of main case on machined surface for side cover, bottom right. Note: Partial VIN number from Janesville, WI plant.Starting in 1967, the transmission code date format changed. Following the transmission type, was the model year, month and day of the month. The letters used for the month were not the same exact as those used in the engine casting date.A – Jan, B – Feb, C – Mar, D – Apr, E – May, H – June, K – July,M – Aug, P – Sep, R – Oct, S – Nov, T – Dec.Examples for 1967-1970 transmission date code format:Y9E10 1969 Toledo TH350 assembled on May 10thP8T03 1968 Muncie 4-speed assembled on December 3rd. Winning eleven 2002 bahasa inggris streaming.

1965 and up Muncie 4-speed code location. Passenger’s side, rear edge of the main case.Turbo 400 transmission code formatThe Turbo 400 automatic transmission has the application and date codes stamped on a metal tag riveted to the passenger’s side of the transmission case.

The tag has several codes on it, which consisted of the full transmission code with Julian date code, application code, model year and serial number of the transmission. This full transmission code will be found on your Protect-O-Plate if it still with your car. The actual application code that would be found on the broadcast sheet and that is also on the tag starts with a C for Chevrolet but the C is omitted in the transmission code. For example, the application code may be CB but in the transmission code itself, only a B will be used.The following is a list of TH400 application codes used only on the full-size Chevrolets.CA 396 engine (also 350 engine in 1969)CB 427 engine (L36)CD 327 engineCF 427 engine (LS1 with 2.29:1 axle)CG 396 engine (with 2.29:1 axle)CH 427 engine (L36 with 2.29:1 axle)CM 307 engineCQ 427 engine (LS1)CY 427 engine (L72)The Julian date in the transmission code started at 1 for January 1st of the start of that model year and continued past 365 until the end of production. For example, transmissions built early in the model year in August and September would have a date code in the 200’s where as those built after January 1st would start from 366.

Transmissions assembled in July would have a date in the 500’s.67A509 67 TH400 for use with 396 engine, assembled on May 24th69B350 69 TH400 for use with 427 (L36) engine assembled on December 16thRear Axle NumbersThe rear axle is final component of the drivetrain to be covered on this page. What can be found on the axle housing is the stamped axle code with assembly date, housing casting number and date housing was cast. In 1964, the axle code was stamped on the front, right side of the differential carrier housing. Starting in 1965, the axle code and date are stamped on the front of the axle tube on the passenger’s side.

The casting number is located on the front of the carrier on the bottom right corner. The casting date is on the rear of the carrier, towards the top on the driver’s side.

The rear axle casting date uses the fame format as the engine casting date.The assembly code consists of the application code, assembly date and assembly plant. Axles were assembled at either Buffalo (code B) or Detroit Gear and Axle (code G). One exception was in 1964 when the first letter of the application code was the plant. (A – Detroit, B – Buffalo). On positraction axles, a letter for manufacturer of the posi unit will appear under the assembly code. It will be a D for Dana, E for Eaton or W for Warner.Sample 1964 axle code: AB1202BB 3.36 non posi assembled at Detroit1202 assembled December 2ndA sample 1965-1969 rear axle code would look like DH1020B which decodes to the following:DH: 3.31 12 bolt rear axle with positraction1020: Assembled October 20thB: Buffalo axle plantThe following will be a table of application codes for the axles used in the full-size Chevrolets.

Prior to the 10 bolt/12 bolt rear axles that came out in 1965, the axle housing was the same for all ratios. The gear set was installed in a carrier, also referred to as a “pumpkin” that could removed from the front side of the axle assembly as a complete unit.

It was possible to change gear sets simply by swapping the pumpkin. The carrier assembly came in both positraction and non-positraction versions. SW is station wagon.

Manual Transmissions The 1967 Chevelle Reference CDManual Transmissions - Group 4.0003-speed manual transmission w/overdrive RPO M10Standard Saginaw 3-speed transmissionMuncie 4-speed manual transmission. Note the speedometer cable exit on thepassenger side. Because the speedometer cable exited on the passenger side,an extra hole was required in the firewall to accommodate the speedometercable.Transmission Month Date Codes A - JanuaryE - MayP - SeptemberB - FebruaryH - JuneR - OctoberC - MarchK - JulyS - NovemberD - AprilM - AugustT - DecemberP7C09 (March 9) date stamping on a 1967 Muncie 4-speed transmission.P7H21 (June 21) date stamping.P7M08 (August 8, 1966) date stamping.1967 was the first year to have the year stamped in the date code and themonth represented by a letter code. Below is a 1966 model year Muncie;note the difference.P0221 (February 21) date stamping on 1966 Muncie 4-speed transmission.1964 to 1968 Muncie 4-speed transmissions can be identified from later modelsby the way the transmission arms attach. Early Muncie side covershad a stud and the shift arm attached with a nut on the stud while the 1969and later model side covers had a hole and the shift arms attached witha bolt.Early (64-68) side plate. Note the shift arms are held in place by a nut/studarrangement. The shifter rods used in the above photo are aftermarket Hurstrods.Although no M-22 Muncie transmissions are known to be installed in 1967Chevelles they were installed in Corvettes and the swap is a simple bolt-inaffair.

Here is a comparison between the M20/M21 gear set and the M22 gearset.M20/M21M22The Saginaw 4-speed transmission was also used and shown for 'M20 PROD V-8ENG & R.P.O. Easily identified by the reverse gear being on the maincase instead of the tail housing.