9" swap question

iamthewreckingcrew · Post by **iamthewreckingcrew** » Thu Apr 17, 2008 9:11 pm

Can I take the 9" pumpkin out of my 81 and swap it right into my 68 9"?

The 81 has traclock and the 68 is an open rear. I want to roast both rear tires when I swap in the big block.

fordman · Post by **fordman** » Thu Apr 17, 2008 11:33 pm

no because the spline count on the axles are different in 67-72 vs newer trucks. the 67-72's mostly had 28 splined axels. very few of them had 31 splined axels.

iamthewreckingcrew · Post by **iamthewreckingcrew** » Thu Apr 17, 2008 11:52 pm

Crap. And I suppose the axles in the 81 are too long too, huh?

fordman · Post by **fordman** » Thu Apr 17, 2008 11:55 pm

probably. but you could sawp the whole rear end if you move the spring perches on the axel housing.

F100builder · Post by **F100builder** » Fri Apr 18, 2008 5:59 pm

If you have the $$$, you can do the swap and buy new axles with any spline and length you want. I've seen axles for a little as a couple hundred for the pair.

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9" swap question

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