Bbc heads

silver79

Weekend Racer
Jun 3, 2003
87
1
6
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
20200616_141252.jpg
get 600 h.p. naturally aspirated from this combo. Do you think I can do it on these heads with some port work?
 

prairiehotrodder

Pro Stocker
Dec 17, 2005
1,575
3
38
45
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
3
0
1
57
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 .
 

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