pinion angle?

[buff]

I'm putting a 351 M Auto in my 69 ford f100 2wd and it has a 9" rear end, I want to put a one piece drive shaft in. My question is what should the pinion angle be set at and how exactly is that done? Help Please

[BobbyFord]

Unless the rear end and rear suspension have been modified the pinion angle should be good where it is.

[buff]

BobbyFord, Thank You that's good news and like always I appreciate the help.

[sargentrs]

Unless the rear end and rear suspension have been modified the pinion angle should be good where it is.

I removed mine, disassembled and painted every everything and put new spring bushings in. So the pinion angle is fine if I just bolt it all back in its original mounting?

[buff]

Thanks Sargentrs, I got the frame all stripped and cleaned today and will be putting on rust protection and paint this week. Plan to have a roller real soon so I can get back to the body. I've taken pictures so I'll get some posted soon.

[averagef250]

The answer is the same angle as your engine.

[buff]

average f250,that's what a neighbor told me last night was if the transmission is say 4 down then the rear end should be 4 up. Is that what your saying?

[averagef250]

average f250,that's what a neighbor told me last night was if the transmission is say 4 down then the rear end should be 4 up. Is that what your saying?

Yep. Draw an imaginary line through the pinion centerline and the crankshaft centerline. Those lines are perfectly parallel.

Good idea to use something somewhat accurate to measure the angle.

[buff]

averagef250,Thank You for the help I can now get it done and not worry.