pro2low

iTrader: (3)

what should the pinion angle be set at for "street racing" with a 12-bolt, bmr adjustable trq arm and a th400.

does hp have anything to do with it?

ive heard anywhere from -1 to -4

and how do i set it?

kkslds

iTrader: (59)

I have always heard -2 is a all around good setting. You use a pinion angle finder and put it on the flat spot at the front bottom of your center section right below where your pinion is. Then adjust your torque arm accordingly. Someone correct me if i'm wrong.

Black02SLPSS

iTrader: (5)

yup thats right

CW00BlackTA

iTrader: (31)

The question is...minus 2 degrees relative to what?

The answer is minus 2 degrees relative to your crank/transmission centerline. Here's what you do. Measure the angle at the face of the crank pulley (or at the rear of the transmission). Set the angle of your pinion yoke to make it the same as the first angle you measured. That makes your pinion angle 0 and means the pinion angle is parallel to the crank/trans centerlines--which is where you have the least drive train loss. To compensate for deflection under load, you adjust your pinion downward from there--usually 1-2 degrees for street applications.

pro2low

iTrader: (3)

the car races on the "tracks that look like streets" haha we havent been able to find anything.....people say -1 to -4.