Cam to big for twin T3 turbos???
07-12-2009, 01:07 PM
#1
Cam to big for twin T3 turbos??? 243/247 .624/.624 on a 116 lobe sep, 114 ICL, and 2 degrees of advance ground in on Comp LSL lobes.
Going in iron 370 with 9.3:1 compression, ported 243 heads, Vic Jr w/ elbow, C6 exhaust manifolds. 3200 stall TH400. Shifting about 6500-6700.
Precision 61mm T3 turbos. 76mm exhaust wheel with .82 AR.
Thoughts?
Going in iron 370 with 9.3:1 compression, ported 243 heads, Vic Jr w/ elbow, C6 exhaust manifolds. 3200 stall TH400. Shifting about 6500-6700.
Precision 61mm T3 turbos. 76mm exhaust wheel with .82 AR.
Thoughts?
07-13-2009, 12:02 PM
#4
I called Precision and I am going to swap on some T4 housings. They already have P trim 76mm exhaust wheels so its a easy swap. Now I just need to decide on .81 or .96 AR for the housings. I'm leaning toward .96 to give me a chance to hook and let it carry me up to 7000-7200 if I need the extra rpm going through the traps. Since my GTO gear selection is either the 3.46 I have now or 3.07's.
07-13-2009, 12:23 PM
#5
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Your original cam will work great with the bigger turbines. With the transbrake, you should be able to spool either the .81's or .96's, as long as you don't choke the exhaust behind the turbos. Dual 3" with straight through mufflers would git 'er done.
07-13-2009, 12:32 PM
#6
I already have the cam. That's why I wanted to switch turbos. I'm probably just going to get the .96 housings. Greg at FTI said I should stall about 3200 under light throttle and about 4k under heavy load. So I should be fine with the .96's. I hope, lol.
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07-13-2009, 04:24 PM
#9
You don't know the half of it, lol. I've bought a nitrous kit twice and chickened out both times for putting it on. Even bought a used STS kit to go on my goat and didn't like where the air filter was for my dusty Arizona conditions, so I sold it.
I think I'm just going to get the .81 housings and see what she does. If it sucks it's easy to put in the .96's. Then later I can always go to a bigger T70 if I really need more power.
I think I'm just going to get the .81 housings and see what she does. If it sucks it's easy to put in the .96's. Then later I can always go to a bigger T70 if I really need more power.
