Masonmoret

Hello, I have a 1970 dodge challenger with 8-3/4 gears in the rear. I was wondering what is ur opinion on those gears, if there good bad? If there bad what would you recommend me changing them to.

John Van

Welcome to the forum, The 8 3/4 rear will be ok for even big blocks w/auto trans. A modified big block w/4 speed and sticky tires that 8 3/4 will surely be short lived, that's why ma mopar put dana 60's in w/440's,hemi's with 4speeds.

MReeves

I agree totally.. The tranny is the difference...... Several of the guys are running an 8 3/4 in their Drag Paks but all to date are autos.... JMO....

Masonmoret

Alright cool. I have a 4 spd so should I go buy some Dana rear gears?

Masonmoret

With a strong 440

Silverick

The factory installed a Dana 60 for that set up.

Masonmoret

It's not stock. When I bought it, it had a 318 with a Colem shifter. Now it has a 4 spd with a 440.

John Van

Take off that 8 3/4 and sell it before you break it. See Cass also know as doctor diff, he can set you up with a good dana 60.

http://www.doctordiff.com/

john

67 GTX

you can have the 8 3/4 built up to handle the additional power. that might be a cheaper route than finding a dana 60

Masonmoret

Thank you for all you help people!

MercuryDon

Unless you dumping the clutch the 8 3/4 should be fine. They did put the 8 3/4 behind Hemi Automatics so they are not a light weight rear. The Dana is stouter but is also heavier and more difficult to change gear ratios in.

Masonmoret

Yeah I looked that up. But I think I'm going wit the 60 Dana just because I don. Want problems

Hey another question,
On a dodge challenger what suspension would you guys recommend to be good and have a lowered stance?