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Generation III Internal Engine 1997-2006 LS1 | LS6
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head choice for 408

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Old 03-12-2006, 06:03 PM
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Default head choice for 408
looking into a set of ETP 255cc heads for my 408? to much head?
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Old 03-12-2006, 06:51 PM
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that depends on the compression and cam choice..
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Old 03-12-2006, 06:53 PM
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cam is in the high 240s and im at 10.5 to 1 with a ls6 head nwo looking to step it to 11.3ish to 1
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Old 03-12-2006, 06:58 PM
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I'm definately not an expert, but with those heads I'd run a bigger cam than that.. And you should go on up to 12:1cr or so.
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Old 03-12-2006, 10:12 PM
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Heads are fine for a 408. Have your cam cut first then tailor the SCR to allow 8.8:1 DCR.

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Last edited by Nate_Taufer; 03-19-2006 at 02:34 PM.
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anyone have a 236/236 ????




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