Rear End Casting Numbers? [Archive] - Chevelle Tech

: Rear End Casting Numbers?


GARY DALE
Nov 24th, 05, 10:35 AM
Dose Anyone Know The Correct Casting Number For A 69ss 12 Bolt? The Car Was Built (04b) The Second Week Of Aprial, The Casting Date On The Rear Is (c 21 9) March 21st 1969. The Number On It Is 3959038nf. The Chevrolet By The Numbers Book Says 68-69 Rear Ends Came With A Casting Number Of 3894939. Thanks For All Your Help! Gary Dale

AZCamino
Nov 25th, 05, 10:10 AM
Dose Anyone Know The Correct Casting Number For A 69ss 12 Bolt? The Car Was Built (04b) The Second Week Of Aprial, The Casting Date On The Rear Is (c 21 9) March 21st 1969. The Number On It Is 3959038nf. The Chevrolet By The Numbers Book Says 68-69 Rear Ends Came With A Casting Number Of 3894939. Thanks For All Your Help! Gary Dale

Gary,
1965 Chevelle 3859140N
1966 Chevelle 3875745N
1967 Chevelle 3894939NF
1968 Chevelle 3917124NF
1969 Chevelle 3959038NF
1970-72 Chevelle 3969278NF

The Chevrolet By The Numbers book has some errors, and the rear end casting numbers is one area that is lacking. Chevelle 12 bolt casting numbers changed every model year except 70 to 72. There was some overlap at model year change over time, but you have the correct 12 bolt for your 69.

Bruce