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Author Topic:   have chevy block dont know what it is please help
Dirt Roller

Total posts: 24
posted February 06, 2005 11:03 AM  
Hello i have a sbc question, I have a chevy small block but dont know what it is, the numbers on the front of the block are as follows VO617CNU anyone who has a book that tells what the block is would greatly be appreciated need to know as soon as possible!!!!!!!! book as in hollander interchange or other

Again please help me!!!
Thanx alot

Dirt Forum Champ
Total posts: 578
posted February 06, 2005 11:21 AM  
it was a 1970 350 250hp 2 barrel version that was in a fullsize car hooked up to a powerglide trans. it was cast on june 17th in flint michigan.


Dirt Roller

Total posts: 24
posted February 06, 2005 11:31 AM  
[ Thankyou very much, i greatly appreciate the help. You must have a really good book lol Could you tell me if it was a 2bolt or a 4bolt main. The reason i ask is beacause a friend of mine gave on of his old enduro cars from a while back and this motor was in it! I went out and got those numbers off of it and could see where the heads had been rebuilt and so had the motor by the looks and the paint differences. Since it is a 350 bblock I am already doing pretty good, I am running a 305 now with 20 races on it already and only have another 305 block!!! Wanted to take a step up this year lol

Again thanx

Dirt Full Roller

Total posts: 30
posted February 09, 2005 11:21 AM  
Probably a 2 bolt, pull the pan to check for sure.

Dirt Maniac

Total posts: 170
posted February 09, 2005 03:29 PM  
there are also numbers on the back above bell housing. They are helpful also...the front numbers can easily be me...and in the menu toolbox is a block number the dirt forum.

Dirt Maniac

Total posts: 143
posted February 15, 2005 09:08 AM  
I agree, check the casting numbers on the bellhousing flange. Those numbers on the pad by the head are usually reference to the type of vehicle, build date and plant it was manufactured in.

Dirt Freak

Total posts: 477
posted February 17, 2005 04:29 AM  
i strongly disagree with the above poster ,for example the 1968 302,327,and 350 have the same casting number the only way to tell what is what is by the suffix code which are the letters on the end of the numbers on the right front pad of the block
3914678....302.....68....2...Z-28 Camaro

[This message has been edited by BK19 (edited February 17, 2005).]

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