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Tuning 12.1:1 compression

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Tuning 12.1:1 compression

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Old

Apr 5, 2009 | 05:07 AM

#1

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Tuning 12.1:1 compression

hey, anyone had any trouble tuning an LS2 408 with a static compression of 12.1:1 and dynamic compression of 10.88:1 on pump fuel

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Apr 6, 2009 | 04:22 PM

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Don't remember my dynamic off the top of my head, but I think it was around there and I had no problems with my iron block 408... even sprayed 200 shot on pump gas too...

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Apr 7, 2009 | 11:49 AM

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10.88:1 dynamic? Wow that's super high, I'd think that's race gas territory for sure.

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Apr 7, 2009 | 11:54 AM

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He's right, you should be under 10:1 dynamic for pump gas

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Apr 7, 2009 | 12:09 PM

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Must be a very small cam to get 10.8 DCR.

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Apr 7, 2009 | 04:54 PM

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Yep, they are right - I went back to my old records and mine was 12:1 SCR, but 8.0:1 DCR!!! Put a big cam in it

I had a Texas Speed "Giant" in mine.

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Apr 8, 2009 | 01:02 AM

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Yeah man, your not gonna be able to get that thing to run on pump. 9.0 is usually the max for pump and thats pushing it. Just don't run a lot of timing, or get c16.

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121, 1211, 383, 408, compression, gas, heads, ls1, ls2, pump, sbc

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