C4 head porting?
Thread Starter
Racer
Joined: Oct 2002
Posts: 293
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From: Newnan Ga
C4 head porting?
Has anyone done any cylinder head porting? Hand or CNC? I've got my engine apart right now and am considering some additional head work. I thought about gasket matching the ports. Has anyone done any of this and what kind of results have you gotten?
Team Owner
Joined: Dec 2000
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From: SE NY
Cruise-In II Veteran
Re: C4 head porting? (87NassauBlue)
Pocket porting & working the Al #113 heads is worth about 25chp; you should also get nice gains from your Al heads.
If you intend to do your own porting get one of David Vizard's books on SBCs.
Of the job also includes larger hi-flow valves, mulit-angle valve job, cleaning up the combustion chamber and such. And of course you top it off with a nice set of RRs to compliment your new cam.
Since the engine is apart, now's the time to do heads, cam, lifters and such.
If you intend to do your own porting get one of David Vizard's books on SBCs.
Of the job also includes larger hi-flow valves, mulit-angle valve job, cleaning up the combustion chamber and such. And of course you top it off with a nice set of RRs to compliment your new cam.
Since the engine is apart, now's the time to do heads, cam, lifters and such.
Thread Starter
Racer
Joined: Oct 2002
Posts: 293
Likes: 0
From: Newnan Ga
Re: C4 head porting? (65Z01)
Thanks, I'll be sure to get one of those books. I'm trying to decide how much to put in this engine. I'm already changing the cam and going to bore the block. I think I'm gonna put a steel crank in as well.
Race Director
Joined: Jan 2002
Posts: 12,261
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From: O'Fallon Missouri
Re: C4 head porting? (87NassauBlue)
I think I'm gonna put a steel crank in as well.
