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I have a current combo in my street car which is a AFR 210 headed 381 CI SBC with 9.2-1 comp ratio. Has a cammotion roller with 262/252 .630 lift on a 116 CL. The engine currently is running twin gt35r turbo's I am thinking of going to a single gt4788 turbo, as I want to put this combo in my drag car which has a hurt engine.

I already have the gt4788 t6 turbo with a .96 ar ex my delima is that I want the car to run in the sevens with the small block what should I do. The car weighs 3200 with a sbc and the 60 foot is usually high 1.20's .

Do you think that I cam get into the seven's with the single, or will the twins be better.
I am too spoiled from being in the seven's with the other combo I had before with a 106mm but I think it is just too big for the 381 what do you think?

Thanks in advance!
 

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I'd put a PT91 or PT98 on there and be done. That should go pretty easily into the 7's on that combo.

- Brian
 

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Go bigger than the GT47.
I would do a 94 or 98.
I am not sure that with your heads the 101 or bigger will make any more power.
 

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if you got a 106..put the 106 on it..might want to sell the other parts and take the money made from them and have curtis at rfd port the heads an intake for you.
 

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I had a similar combination with a PT98 @ 3180lbs on 10.5w. Best of 7.65 @ 185
 
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