454 heads
 

Anyone have any idea what heads come on a stock 86 454 in a C30? Mainly just square or oval port is what im curious about. was thinking of ordering a new intake.

Re: 454 heads
 

Oval port

Re: 454 heads
 

Cool thanks. Kinda thought they might be but its been awhile since i drug out my mortec saved web pages.

Re: 454 heads
 

Peanut port, though an oval intake, I've read, will work.

Re: 454 heads
 

Square (intake) ports only came on the special HP motors in cars....never in a truck(except El Camino)

Oval ports until mid 70's....then small oval(peanut) ports

Re: 454 heads
 

my truck is an 83 and it has 049 large ovals, i dont think peanuts started until 85 or 86

Re: 454 heads
 

Sounds like i need to find an excuse to put on a different set of valve covers so I can get the casting numbers. Lol

Re: 454 heads
 

mid 80's to 1990 "Peanut" ports

http://www.mortec.com/bbc.htm

However mismatched manifolds work well with the smaller ports..

http://www.carcraft.com/techarticles...d/viewall.html

Re: 454 heads
 

Oh hey mortec put the site back up. I did not know that!! Cool.

Re: 454 heads
 

I thought this was a quite informative article on big block heads.


http://www.cartechbooks.com/techtips...bigblockchevy/

Re: 454 heads
 

Very informative and a great read!! Thanks!!