Compression ratio
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Compression ratio Hey guys, I have a question about the compression I will be devolving. I have a gem 4 ls3 thompson motor sports 4.16 stroker motor with dished pistons and stock L92 heads that I am going to have polished and ported. Eventually I want to put a d1x pro charger system on my motor, but in the mean time before I do I am concerned about the compression ratio being low between the dished pistons and stock L92 heads. Anyone have any information regarding this concern????
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Idk what it’s at right now, I don’t even have it assembled all the way yet, then I have to install it, I’m just wondering is I should get the heads milled, the gaskets I have are cosmetic 50 thousands thickness, and that was my other question. Are the gaskets I have purchased going to decease my compression? I know the standard thickness is 40 thousands, I wanted to go a little thicker for when I throw the D1X on.
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thanks bro I really appreciate it. Thompson never listed those specs in my invoice so I’ll have to call them for the valve relief/dome cc’s, stroke and deck height. My only other concern is the cam I got for the build and my injectors. I bought a btr jam cam, what gives me pause is in the description it says the cam works well in ls1, ls2 with cathedral port heads and SOME ls3 combinations. Mind you I am running rectangular ported L92 heads. The cam is meant to be paired with a pro charger which is what I plan on adding to my set up once the motor is installed and I break it in. The cam specs are 230/242, .608”/.615”, 115+4. Just wondering if I picked the wrong cam??My injectors are rated for 90 psi just wondering if those will be strong enough for a d1x or if I should get 100 or 110 psi rated injectors???
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Idk what it’s at right now, I don’t even have it assembled all the way yet, then I have to install it, I’m just wondering is I should get the heads milled, the gaskets I have are cosmetic 50 thousands thickness, and that was my other question. Are the gaskets I have purchased going to decease my compression? I know the standard thickness is 40 thousands, I wanted to go a little thicker for when I throw the D1X on.
JMHO.
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Thoughts? any thoughts in reference to my last response to 01camaroSSTx about my cam and injector spec concerns???
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Joined: May 2008
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From: Carnation, WA
My NA injectors run at 60 psi, so yours at 90 psi should be good for plenty of boost. But don’t trust me, ask somebody who knows about boosted LS motors.
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