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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: 78 BIG TEN on March 08, 2008, 05:11:23 pm

Title: Question about heads.
Post by: 78 BIG TEN on March 08, 2008, 05:11:23 pm

As you all know I have a 78 Chevy with the 350. I was wanting to eventually replace the heads on the engine. Without going after market, which higher performance heads from other 350's will work?

I have also seen people giving a number for their engine...Where do I find this number on mine?

Thanks.

Title: Re: Question about heads.
Post by: VileZambonie on March 08, 2008, 05:55:16 pm

The casting number is on the back of the block near the bellhousing on the drivers side.

Pretty much any heads will fit...some require modifications, others require different intake manifold etc. but why do you want to change the heads?

Title: Re: Question about heads.
Post by: 78 BIG TEN on March 08, 2008, 06:01:29 pm

I have heard that different stock 350 heads flow better and the ones on my truck are meant to be on a truck for the towing and low range hauling purposes. Correct me if this is wrong.

Title: Re: Question about heads.
Post by: VileZambonie on March 08, 2008, 07:35:15 pm

What's the casting # of your heads?

Title: Re: Question about heads.
Post by: 78 BIG TEN on March 08, 2008, 08:15:13 pm

Dunno where would that number be?

Title: Re: Question about heads.
Post by: Captkaos on March 08, 2008, 09:29:50 pm

Under the valve cover.

Title: Re: Question about heads.
Post by: 79SHORTWIDE on March 09, 2008, 11:49:13 am

I'm sure alot of you know this site, but for those that don't;
www.mortec.com

Title: Re: Question about heads.
Post by: Captkaos on March 09, 2008, 12:45:26 pm

I think Mike has better info personally:  http://www.nastyz28.com/index.php?page=smallblockchevy