91 axels into a 84 rearend?
Thread Starter
Joined: Oct 2008
Posts: 437
Likes: 0
From: Bucks County, PA
Car: 1991 RS
Engine: 383 stroker
Transmission: 700R4
Axle/Gears: 3.23 posi
91 axels into a 84 rearend?
Correct me if I'm wrong, but I'm assuming the axels in my 91RS are 28 spline and the axels in the 84 I'm rebuilding are 26......so, can I swap them? The 91 is an open 2.73..the 84 is a posi 3.23. Thanks
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Joined: Jul 1999
Posts: 17,274
Likes: 171
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: 91 axels into a 84 rearend?
Your 84 posi will need to be replaced to a 28 spline posi to accept the axles but other than that, they will fit into the older housing.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Thread Starter
Joined: Oct 2008
Posts: 437
Likes: 0
From: Bucks County, PA
Car: 1991 RS
Engine: 383 stroker
Transmission: 700R4
Axle/Gears: 3.23 posi
Re: 91 axels into a 84 rearend?
Yeah....James is right, I just wanted to know if the axels would swap w/o replacing the posi. I already spent like $900 on the PBR upgrade from Ed Miller not to mention the $150 summit diff cover.....replacing the posi just aint in the budget right now
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