spool in a 8.8 
Spline Question
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Spline Question
Hey guys, I got a 89 F-150 with a 302. With the standard 8.8 in the rear and a Dana 44 in the front and I'm going to put 4.56 gears in both and i'm lookin in to getting spools for both, but dont no the spline and I haven't ripped it a part yet does any one no what they would be. I do know the back can be a 28 or 31. But don't no the front. Can any one help. 
just another Rockwell looser
Joined: Feb 2003
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From: Cocoa, FL
Originally Posted by 351slug
My 8.8 on my 85 F-150 never broke running 39 M/Ts with a mild 302. The front broke a few times. No rock crawling, just spinning in the sand.
i am a fan of teh 8.8 for sure for putting up with the abuse ive given them over the years, never any breaks just twisted splines...
but 39's are to big for a 8.8 if you actually wheel it.....now if its just a mall crawler or spinning in sand i can see it lasting a while.....
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I just thought of running spools but what else can I run. lockers just seem so expensive. The truck is used for truc pulls and mud runs and some everyday use.
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Front 30
Rear 31
You should be relatively ok with 36 inch tires or less going a locker route becasue of the greater stress caused by a locker and 39s.
Your best bet would be to use a selectable, limited slip or something like a aussie or detroit in the rear.
But whatever you do DO NOT LOCK THE FRONT!!!!!!!!!!!!
Rear 31
You should be relatively ok with 36 inch tires or less going a locker route becasue of the greater stress caused by a locker and 39s.
Your best bet would be to use a selectable, limited slip or something like a aussie or detroit in the rear.
But whatever you do DO NOT LOCK THE FRONT!!!!!!!!!!!!
just another Rockwell looser
Joined: Feb 2003
Posts: 4,042
Likes: 0
From: Cocoa, FL
Originally Posted by ride2die
I just thought of running spools but what else can I run. lockers just seem so expensive. The truck is used for truc pulls and mud runs and some everyday use.