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Is there any way this 408 will make 450 rwhp?

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Old 05-11-2014, 10:27 PM
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Question Is there any way this 408 will make 450 rwhp?

I'm building a LQ4 408. Eventually I want to run it for boost, so i'm going with -29cc dished pistons. But I won't be able to add the turbo for at least 6 months maybe as long as a year and a half. I'm gonna be using .040 thick cometic gaskets, and 58cc 243 heads, LS6 intake with 42lb injectors. I'm just hoping to make 450 n/a for now. Would I be close? and does anyone have a recommendation on cam? I'm thinking of using the one in my sig for now, but i'll take free advice. Thanks.
Old 05-11-2014, 11:26 PM
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I think with this combo i'll me making around 9.5:1 cp
Old 05-15-2014, 12:09 PM
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I think you would get better results using a carb then efi. Timing can be more aggressive and higher allowing for a higher torque figure and that usually brings the horsepower up some with it.

I changed my setup from efi to carb from last year to this year, along with a few other minor chages, and the difference in the 1/8th mile was 0.8 seconds faster on motor only.
Old 05-15-2014, 03:17 PM
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It just depends on the dyno really. Do you want a turbo friendly cam?
Old 05-15-2014, 03:49 PM
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Who cares what it makes NA when it's a turbo motor.
Old 05-17-2014, 12:15 AM
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for now i'll be running n/a with a n/a cam. I'm gonna switch the heads and cam when i build my turbo.



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