What HP gain with stock heads?
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Joined: Jan 2001
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From: Las Vegas
Car: 1989 IROC-Z
Engine: L98 350
Transmission: New 700r4 Done by 11/14/07!
What HP gain with stock heads?
Hi everyone. How much HP gain could I see from porting my stock heads and putting on a set of roller rockers? I've got an LG4 engine. It's been a while since I've gone internal on an engine, so I was thinking that I may just change the cam since I'll have all that open anyway. I was thinking about a mild Crane compucam or something like that. Would it really be worth it with those dished pistons and the low compression ratio?
Joined: Mar 2000
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
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Axle/Gears: 12B-3.73/9"-3.89
Yes, it'll be worth it as long as you fix the exhaust and air cleaner restrictions while you're at it.
The compression is costing 10-15 ponies or so.
The compression is costing 10-15 ponies or so.
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From: Tucson,AZ,USA
Car: Junk
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I'd also say 20-30. Ported the LG4 heads on the 350 in my girlfriends camaro and I think they work quite well considering the puny 1.84 valves I left in em.
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theshackle
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Mar 5, 2017 06:37 PM
