what top end pkg for a 383 ls1

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Jul 31, 2008 | 07:31 PM

JeaneGrae

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what top end pkg for a 383 ls1

Trying to build a 383, what top end components such as heads, intake and tb would be get me 425 rwhp.

Jul 31, 2008 | 10:40 PM

cdubbzz

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Livernois Stage III's, FAST92 (ported by Mamo) and NW throttle body.

my .02

Jul 31, 2008 | 11:54 PM

SOMbitch

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425 is easy on 383. I almost make that on 346ci stock bottom. Raise the bar. I have a friend making 47x and running upper 10's with TSP 5'3's, unported Fast 90/90, and MS4. Don't know for sure but think he is milled to 59cc and pistons have 4cc valve relief. I'll ask tomorrow

Aug 1, 2008 | 04:33 AM

scidav87

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i'd be shootin for about 490rwhp or so, the stock 346ls1 with h/c is an easy 425rwhp. See what Texas speed, and other good shops have to say...

Aug 1, 2008 | 10:48 AM

99blancoSS

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You can acheive your goals very easily, a 383 is capable of more power than that.

Some heads and a mild cam and your where you want to be. I would look for used cnc'ed ls6 heads and save some money.