compression ratio
Thread Starter
Junior Member
Joined: May 2002
Posts: 70
Likes: 0
From: NE florida
Car: 1992 Z28 and 1988 IROC-Z
Engine: both L98s one with SD and one with MAF
Transmission: both 700R4s
compression ratio
I have a 3.1 motor and want to get 9.5-10:1 comp ratio what would be the cheapest route to take. Mill head, flat top pistons(unless it already has them), zero deck block or any other ideas.
Supreme Member
iTrader: (2)
Joined: Jan 2003
Posts: 1,083
Likes: 0
From: Northwestern Pennsylvania
Car: 1985 Pontiac Trans Am
Engine: 355 with stuffs.
Transmission: 700R4
Axle/Gears: 4.10 Posi
may want to see if there's a cylinder head out there that has a smaller combustion chamber.
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Joined: Jul 2001
Posts: 4,461
Likes: 0
From: BFE, MD
Car: 13 Ram 1500/ 78 Formy
Engine: 5.7 / 7.4
Transmission: 6sp / TH350
Axle/Gears: 3.55 posi / 3.23
you could mill the heads, or buy the super six heads. How much power gain are you looking for? maybe a rocker arm swap is what you're looking for:
4 flavors,
roller tip- 1.5 & 1.6
full roller -1.5 & 1.6
less work too.
4 flavors,
roller tip- 1.5 & 1.6
full roller -1.5 & 1.6
less work too.
Thread Starter
Junior Member
Joined: May 2002
Posts: 70
Likes: 0
From: NE florida
Car: 1992 Z28 and 1988 IROC-Z
Engine: both L98s one with SD and one with MAF
Transmission: both 700R4s
what roller rockers could I use just like SB rockers or does someone make special rockers for 3.1 6ers, Super Six? I never heard of that, please explain. I was wanting a bout 20 hp.
Member
Joined: Sep 2002
Posts: 182
Likes: 0
From: Louisville Kentucky
Car: 1991 Pontiac Firebird
Engine: 3.1 V6
Transmission: 700R4
1.6RR
Hey, I used a set of 1.6RR from a 350 with no problems at all. I did have to use my old pivot *****, the V8 ones are 3/8" and I'm metric. There shouldn't be any problems at all, just make sure to replace the jam nuts.
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