GT42 question

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Apr 13, 2006 | 10:56 PM

80superbu

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From: Colorado Springs

GT42 question

Been reading through some old post about A/R's and boost rates and where turbos peak.and ...and ..and..wow that's a lot of info

So anyway, say I had this GT42 94mm w/ 70mm inducer. T4 flange 1.01 A/R and planned to put it on my LS1 (347) w/317 heads and some -8cc flat top pistons..what are your thoughts on this? there is plenty of air and fuel being supplied. Good combo, yes/no??

Apr 13, 2006 | 11:34 PM

DrTurbo

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I'd go bigger

Apr 14, 2006 | 04:49 AM

Fryguy302

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From: Oxford

Go with the GT42-74mm or the GT42-76mm (inducer sizes). No reason not to go with one of these larger units, they will still spool very fast on a mild 346. You'll love it, the car will be an animal.

Apr 14, 2006 | 05:12 AM

White.Lightning

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From: Aston, PA

Quote:

Originally Posted by Fryguy302

Go with the GT42-76mm (inducer sizes). No reason not to go with one of these larger units, they will still spool very fast on a mild 346. You'll love it, the car will be an animal.

I agree. I've been in a 661 rwhp T76-S (GT42 housing) car and it moves on the street. Lag time is minimal also. You won't be dissapointed.

Good luck
Andy

Apr 14, 2006 | 05:52 AM

80superbu

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Sounds good but I already have this one. What kind of performance would this one give me? I'm not against sending it it to get reworked since it will still be several months before I'm ready to go...at my current rate