85 rear axle swap from 8 inch to 9 inch

~The Jester~ · 12-07-2005, 08:35 PM

Yeah! What Brian said!

For "simplicity" sake, a much easier swap is the 8.8" Just for the record that '85 has a 7.5" in her, not an 8".

Get a rear out of an '86 + GT, a set of Strange 31 spline axles, and a center section from an Explorer. Don't get much better than that, I ran a 1.48 sec 60' time with this exact setup.

A 9" can be done, but an 8.8" is MUCH easier to do!

P51Mustang · 12-08-2005, 01:02 AM

Great info. I will start looking around. If the rear diff is working good for you, then it should work for me. With the info you just gave me, I guess I will stay light on the throttle for a little while longer. No need to be Found On Road Dead. Its better to be First On Race Day. Is there any year of explorer diff to look for? Or is it, the newer the better. Guess I can measure the axle length that I get with the newer rear axle and find some stronger axle shafts. I know I will be asking more question in the future. Will keep you updated with my progress. Thanks for the tips.

The Need For Speed

12-07-2005, 08:35 PM	#1
~The Jester~ Rat Killer Join Date: Aug 2002 Location: Cold ass Ohio Posts: 1,143	Re: 85 rear axle swap from 8 inch to 9 inch Yeah! What Brian said! For "simplicity" sake, a much easier swap is the 8.8" Just for the record that '85 has a 7.5" in her, not an 8". Get a rear out of an '86 + GT, a set of Strange 31 spline axles, and a center section from an Explorer. Don't get much better than that, I ran a 1.48 sec 60' time with this exact setup. A 9" can be done, but an 8.8" is MUCH easier to do! __________________ d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply.....

12-08-2005, 01:02 AM	#2
P51Mustang Not to old to drive a Mustang Join Date: Apr 2005 Location: Portland Oregon Posts: 3	Re: 85 rear axle swap from 8 inch to 9 inch Great info. I will start looking around. If the rear diff is working good for you, then it should work for me. With the info you just gave me, I guess I will stay light on the throttle for a little while longer. No need to be Found On Road Dead. Its better to be First On Race Day. Is there any year of explorer diff to look for? Or is it, the newer the better. Guess I can measure the axle length that I get with the newer rear axle and find some stronger axle shafts. I know I will be asking more question in the future. Will keep you updated with my progress. Thanks for the tips. The Need For Speed __________________ Best Regards, P51Mustang

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