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73-87 Chevy _ GMC Trucks => Performance => Topic started by: 454c10 on February 04, 2015, 09:53:05 pm

Title: Witch 454 is better?
Post by: 454c10 on February 04, 2015, 09:53:05 pm

I have a 1984 454 outa a rv or a 1976 gmc that has a 454 im not posative if its a 70s 454 but hope it is what would be better to build  or whats the pros and cons?

Title: Re: Witch 454 is better?
Post by: Shifty on February 05, 2015, 11:37:12 am

Either would be fine for a build, I'd just watch for core shift on the 70's block. 

Title: Re: Witch 454 is better?
Post by: Engineer on February 05, 2015, 06:29:15 pm

If either one is a 4-bolt main that is the one I'd build.

The '76 will most likely have better breathing heads.