[abeis]

I have had the engine and transmission put in, now need to replace the old rear end.

Vehicle is a 1963 Chevy Pick Up truck. I have had installed a 383 that is 400hp+ and it is hooked up to a 700R4 transmission.

I have emailed Phoenix Transmission where I got the transmission from and based on tire size, etc I believe I will be good going with a Ford 9 inch with 3.96 gears.

Currently I go down the road at about 1800 rpm and do not think I will run that high with this gear ratio.

I would appreciate any thoughts on the Ford 9 inch and selected gear ratio.

Thank you

[big gear head]

I guess you are going to have a rear end built to fit the truck? I would start with a 9 inch truck housing. They are pretty wide and can be narrowed to fit your truck. The truck housings are the strongest and many times you will get a Traction Lock differential and 31 spline axles in a truck rear end. But why not just build a 12 bolt Chevy truck rear end for it? The 12 bolt is plenty strong for what you are building. The 12 bolt is lighter and takes less power to trun, and it will be a lot cheaper to build.

[C-10]

^^ Agree whole heartedly.

On the street with that engine trans combo, you'll be fine.

You may even invest in one of these:

[ogre]

here is a guide for picking a rearend, might help. scroll down to the bottom

[fast68]

12 bolt truck was '64-82

[abeis]

Guys - thanks for the replies, thoughts and information.