gm rear end id number

steve
10/6/07

what is this rear end out of? 3707306 gm2

Mr. Bowtie

3707306 is a 1956 passenger car center section casting number for a non posi unit.

PMichael
10/18/07

what is the rear end casting number 1285542B out of? I thought it was a 1967 Impala but not sure

PMichael
10/18/07

what is the rear end casting number 1285542B out of? I thought it was a 1967 Impala but not sure

Mr. Bowtie

We do not have the id information on #1285542B however try Chevrolet Customer Assistance at 1 800 222–1020 from 9–4 M-F Eastern time.

SteveP
9/17/11

what is this rear end out of 3686839 N ..and can u tell me what gear ratio is in the rear end?

SteveP
9/17/11

i'm sorry i had the number wrong…its 3896839 N..GM82…6 lug rear end out of a 1978 chevy 4×4 truck…

talking to idiots
9/19/11

Answer your own question.

Robertgm80
7/8/12

What is this rear end out of 3896839 N GM86 ? Ratio and positive ?

Dan
3/15/13

GM2 3856525 can you ID ratio

Dave Action Automotive Ballground ga.
4 months ago

73 to 77 chevy half ton pickup 12 bolt cover.divide numbers found on ring gear, example 41 divided by11 =3.73 gear.

Rocketmanralph
1 month ago

I have read a lot about this differential casting 3707306 as being 1954–1962. But I can't seem to find any info on my casting 3707806, some say the 8 is a 3 but with it being sand blasted and a magnifier the 8 is a 8. So can anyone share the history on this casting also on the opposed side the stamp letters and numbers are AB722.

casting number
6 days ago

Need to know where does this rear end come from 1285542

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