Bbc heads


Weekend Racer
Jun 3, 2003
whitewater, WI
So I have a tall deck 8.0L bbc as advertised by gm industrial. Mine was in a generator made by Generac and has some interesting parts. Scat crank, nice rods, speed pro flat tops, 1 piece rear seal. It looks new inside (ran on propane?) My question is about the heads. They look like a "fastburn" style chamber and has the 2.06/ 1.725 valves. I haven't cc'd the chambers yet. The only casting # is a Generac p/n. They look like oval ports. Im going to try to
get 600 h.p. naturally aspirated from this combo. Do you think I can do it on these heads with some port work?


Pro Stocker
Dec 17, 2005
Melfort Saskatchewan Canada
i think 600 hp is obtainable with nearly any BBC head. However the whole combo needs to be set up well. It will not be a real tame combo. Probably a solid roller cam with fairly high compression. Also much bigger valves and high quality parts to work with that roller cam.

G Body George

New Member
Sep 6, 2021
Looks like those could be the peanut port late model vortec style heads , Do they have a bolt in rocker or stud mount style rocker , A picture of the top side of the head would help . Once i see this i could give more accurate advise or possible a casting number . Gear

Stickers & Shirts!!

Quick Navigation

User Menu


© 2001-2022, All Rights Reserved.
Ripp Technical Services
A ForumGeeks Production. is a place to provide and exchange performance tech, tips, information and general discussion about the 1978-1983 Malibu and Malibu Classic. All A/G body fans and discussions are welcome here. Much of the information on this site applies to other years and models of the A/G body lineup.

Malibu Racing is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of, Inc. or its affiliates.