12 bolt id
1 - 6 of 6 Posts
Joined
·
15,967 Posts
K149
K=November
14=14th day
1-1971
C= Buffalo Assembly plant
BS= 4.10 ratio
112= 112th day of the year
G=Detroit Gear & Axle
1=first shift
E= Eaton Posi traction unit
The 3969341NF keeps coming up as correct for 71 Camaro SS & Z28 or Nova SS
This is a HP unit for sure!
Someone know more! And someone is looking for one of these! If this is correct!
Al
K=November
14=14th day
1-1971
C= Buffalo Assembly plant
BS= 4.10 ratio
112= 112th day of the year
G=Detroit Gear & Axle
1=first shift
E= Eaton Posi traction unit
The 3969341NF keeps coming up as correct for 71 Camaro SS & Z28 or Nova SS
This is a HP unit for sure!
Someone know more! And someone is looking for one of these! If this is correct!
Al
Joined
·
2,541 Posts
71 camaro rear and 71 nova rear do not interchange because the 71 camaro 12 bolt rear width is about 2 inches wider than the 71 nova 12 bolt rear...
Joined
·
2,246 Posts
12 bolt axle..
CBS tube stamp is a one year only code....1970 model year Nova 12 bolt.....3.31 posi.
Date stamp on the casting is 11/14/69 casting number is correct for 1970 12 bolt..
Axle tube stamp is 11/24/69
These dates make sense for that time frame...
Chevy added the "C" to the beginning of the tube stampings for 1970....the "C" is often slightly offset or positioned a little to the left of the "BS" part of the stamp...in prior years the code would have just been"BS".
This axle code would have most likely been in an L-34 BB or a SB Super Sport car.
wilma
CBS tube stamp is a one year only code....1970 model year Nova 12 bolt.....3.31 posi.
Date stamp on the casting is 11/14/69 casting number is correct for 1970 12 bolt..
Axle tube stamp is 11/24/69
These dates make sense for that time frame...
Chevy added the "C" to the beginning of the tube stampings for 1970....the "C" is often slightly offset or positioned a little to the left of the "BS" part of the stamp...in prior years the code would have just been"BS".
This axle code would have most likely been in an L-34 BB or a SB Super Sport car.
wilma
Joined
·
1,730 Posts
There was no 12-bolt available in teh 1971 Camaro. 1970 was the last year of a 12-bolt in a Camaro.
^^^ I totally agree. The C prefix gives this away as a 1970 rear. CBS was not a Camaro code but was a code for Novas (3.31 posi). That rear was standard in a 1970 Nova SS with either an L48 350 4-speed or an L34 396 with a manual trans (3 or 4 speed).
1 - 6 of 6 Posts
Join the discussion
