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408 build

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Old 08-26-2009, 08:34 PM
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I am building a 408 for vortech v3 t trim. I need to decide on a cr for IT. do i go 10 to 1 with 10 psi is that safe with forged parts , or do i need to go lower like 9to 1 with 12 psi WHAT DO U THINK
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Old 08-27-2009, 04:56 AM
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We generally shoot for a 9.5 ratio, it allows you to run a lot of boost on pump gas. Bob
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Old 08-27-2009, 07:29 AM
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EPP built my 408 and we went with 9:5 compression and increased the boost to12 1/2 lb. and put down 695 RWHP.
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