Thread: 3.70 procharger pulley
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Old 06-28-2023, 09:20 AM   #6
danhr
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Quote:
Originally Posted by BeauRichardson View Post
what kind of boost numbers are you seeing with a 3.70 pulley with the ati balancer? Currently making 12 pounds give or take with the 3.85
depends on which lower you have, there are two different sizes.

I was making ~10 lbs on a 3.9 pulley with a 8.25 lower, making 800 rwhp.
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2016 1SS A8: FBO + Circle D + P1X + Meth + Tuned by Pray Performance

Stock Longblock

800 SAE rwhp. 9.4 @ 145 mph.
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