need help chevy small block
 

hello i have a chevy small block casting number 3970010
i belive that is 1970 to 1980 350 but can any one tell me what the vin pad mean's k0424C8C N600758 ? any info would help thank you very much https://www.yenko.net/ubbthreads/imag...s/confused.gif

Re: need help chevy small block
 

I think that's a Pontiac prefix,as they did use that block too.
It would decode as:
K=McKinnon Industries engine plant
04=April
24=day
CBC=1972 Firebird code
N=Norwood assembly plant
600758=758th unit produced at Norwood,they started at 600001.
I'm not up on the Pontiacs much.
What's the complete block casting date on the back lip?
I realize this may not be correct as a 1972 Firebird used a 250 CID V6 for CBC callout.
Are you certain about the CBC prefix?

Re: need help chevy small block
 

Hello again I just went out to the shop and put paint striper on the stamping pad, I found more numbers this is the exact order of numbers all i can find on back of block is 3970010 gm
K0424C8C
79N600758
79N600758 that is how it looks i don’t know why there are two the same on the pad ? length of pad is about 1'inch and a half long if this help’s Thanks

Re: need help chevy small block
 

C8C is a '79 LM1 350-4Bbl. . Aren't all the engines w/ the small pad 76/77 and up? ~ Pete

Re: need help chevy small block
 

I also herd a '8' inch balancer could lead a 350 to be a 4 bolt main is this true ? I have never pulled pan of motor yet. I thought engines with the small pad could have been produced in ‘70 and up, im not to shure Thank you for all your help

Re: need help chevy small block
 

If that is a Pontiac engine then the con vin should read 29N600758 instead of 79N600758

First digits = GM division
1 - Chev
2 - Ponitac
3 - Buick
4 - Olds
5 - GMC

C8C - 1979 350-170hp LM1 F-body, my parts book says Camaro

Re: need help chevy small block
 

Ha! LOL
Sorry Josh,I thought that was the letter B,not the number 8 in between the C's..
Nice catch guys.
http://img.photobucket.com/albums/v6...ing20Glass.jpg