ALL KINDS of C-2 NUMBERS???

[`Michael Southard]

I think I have ascertianed that I have the appropriate trany for my SWC. With my VIN being; 30837S116445. My Trans numbers are 3116445 located (stamped) on the driver side rear flange with about 1/4" numbers.
The casting # on the trany side plate is 3831704.
The casting # on the tail housing is 3831731.

I can't make heads or tails of the differential. Passenger side # is 3899148-N and on the driver side what looks to be "J 76" ??? Nolan Adams book seems to be a little vague in this area. Well it doesn't show my numbers anyway.

Is there a website out there that can easily track down casting #'s for any chev. block. My 350 4-bolt cast # is 8970010. Then on the right side (smaller figures) is 8233.

Thanks, Mike S.

[Joe R.]

Re: ALL KINDS of C-2 NUMBERS???

Michael,

Looks like the block should be # 3970010 and could have came in a 70-72 Corvette or most likely a truck. Got my 010 block from my 1974 Blazer.

Regards,

JR

[`Michael Southard]

Re: ALL KINDS of C-2 NUMBERS???

JR,
It is possible the number is a 3 rather than an 8, It is a little obscure.
Thanks Mike S.

[Jim T.]

Re: ALL KINDS of C-2 NUMBERS???

Michael,

Corvettes from 1969-1980 used the 350 cu in block 3970010.

[Kevin Whiteley]

Re: ALL KINDS of C-2 NUMBERS???

Mike,

3831704: Muncie 4-sp. main case for 63 Passenger and Corvette.
3831731: Muncie 4-sp. tailhousing for 63 Passenger and Corvette.

Looks like the above two were for 63 only, as the #'s changed in 64.

3899143: 67-69 Axle Center section.

My book doesn't show an "N" and the last digit is probably a "3" rather than an "8". "J 7 6" is October 7, 1966 which matchs for the 67 model year. Look for a stamped code on the bottom of the carrier. It will tell original axle ratio, date of assembly, and shift code.

3970010: "8223" probably is August 22, 1973. This block was used until 75.

I don't know of a good website, but Colvin's books are a good reference.

[`Michael Southard]

Re: ALL KINDS of C-2 NUMBERS???

Great, Thanks Kevin.
Where did you find this information?
Mike S.

[William C.]

Re: ALL KINDS of C-2 NUMBERS???

Mortec.com is a good site for chevy engines and heads. I wrote an article on the '63 Muncie for the restorer about 10 years or so ago, if you have the Cd, there is a wealth of information there.

[`Michael Southard]

Re: ALL KINDS of C-2 NUMBERS???

Bill,
Are you refering to the CD that NCRS offers? Do you know if the info on the CD also covers the same stuff as the "63-64 NCRS Tech & Judging Guide"?
I'm just trying to keep from purchasing redundancy.
Mike S.

[John H.]

Re: ALL KINDS of C-2 NUMBERS???

Mike -

The CD is a compilation of all the articles that have appeared in the "Restorer" magazine from day one, and is an extremely useful reference - well worth its cost. It's not the same as the TMI&JG.

[`Michael Southard]

Re: ALL KINDS of C-2 NUMBERS???

Thanks John, Consider it ordered!