Stroker, low compression question
Thread Starter
Melting Slicks
Joined: Aug 2003
Posts: 2,145
Likes: 3
From: Ft. Worth TX
Stroker, low compression question
Sorry for what I feel to be a noob question. The search didn't yeild my desired results.
If you have a low compression shortblock and have low compression heads, are you doing a little overkill? What effect does that have on the overall compression ratio?
Here are my plans.....LS2 408 and I have Stage II LS1 low compression heads. I was thinking of moving the heads over, but I am unsure of how this will benefit me.
If you have a low compression shortblock and have low compression heads, are you doing a little overkill? What effect does that have on the overall compression ratio?
Here are my plans.....LS2 408 and I have Stage II LS1 low compression heads. I was thinking of moving the heads over, but I am unsure of how this will benefit me.
Pro
Joined: Nov 2004
Posts: 509
Likes: 0
From: Nevada
You need to know the cc head volume and the -cc piston volume bore and stroke and also need to know deck height and also thickness of head gasket and then use a compression ratio calculator to determine your actual compression ratio. Otherwise you could still be taking a chance also depending on how much boost you run try to set it between 8.5 and 9.5.
Les
Les
Pro
Joined: Jul 2000
Posts: 580
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From: Washington, USA
Well, low compression heads on a 346 will no longer be low compression on a 408. You're compression ratio goes up on a stroker due to the increase in cylinder volume. 9.8:1 heads on a 346 would be 11.5:1 heads on a 408, all else being equal.
Thread Starter
Melting Slicks
Joined: Aug 2003
Posts: 2,145
Likes: 3
From: Ft. Worth TX
Originally Posted by ramcharger
Well, low compression heads on a 346 will no longer be low compression on a 408. You're compression ratio goes up on a stroker due to the increase in cylinder volume. 9.8:1 heads on a 346 would be 11.5:1 heads on a 408, all else being equal.
What would we do without you guys with the smarts?
