CLASS RACER FORUM

CLASS RACER FORUM (https://classracer.com/classforum/index.php)
-   Stock and Super Stock Tech (https://classracer.com/classforum/forumdisplay.php?f=4)
-   -   Help using Class Racer Info (https://classracer.com/classforum/showthread.php?t=89842)

JP1738 07-08-2025 03:45 PM

Help using Class Racer Info
 
Hey everybody, quick question on a particular combo:

I've been looking through the guide and trying to sort out what I could and couldn't use for a combo for my wagon. I have a block on hand that I could potentially use for a 350 combo, but I can't figure out if the casting number is the right one or not.

It has casting number GM 3970014. I can't find anything in the guide that lists what the stock casting number would be, only after market replacement stuff. Can I use this block for a '79 350 combo? I can't find much of anything on the internet about this particular casting and I don't know how it can be used in terms of class racing. Is that block kinda like Q-jets where one particular casting can be used across the board for lots of years and combos? Please help!

BRETV 07-08-2025 04:07 PM

Re: Help using Class Racer Info
 
Dawson, any factory block is legal. If you do go aftermarket, it has to be one of the NHRA accepted blocks for that combo.




Bret Velde
2003 I/SA
Coming soon

Glenn Briglio 07-09-2025 12:17 PM

Re: Help using Class Racer Info
 
Run it as a 1978 nhra rated at 270hp. 1979 nhra rated at 279hp.


All times are GMT -4. The time now is 03:56 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.