Thread: Model A high boy rear end

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Hi how wide should a rear end be to fit close to a A body and not look to wide (to far away from body)
I am buying a coupe but it looks like the 10 bolt is to wide in the pic of it.
Thanks Dave

I just bought my brother's basket case 29 a roadster original body, just missing deck lid, lots of parts in boxes It has a 8 inch maverick 5 bolt that looks right. Engine will be stock 302 4 barrel dual exhaust. I should only be in it 10g or less when it is finished.

My '29 five window also has an 8" posi from a Maverick and it is perfect width. I believe the Ford "9 rear ends are about 1 1/2" wider and would have to be modified to look right.

http://www.myautozoo.com/29ford-back.jpg

The usual width for rear ends on higboys et al is 56".

Measured from outer drum to outer drum which is the accepted way to measure.

Fwiw - I'm running a 55" wide 9" under a 32 highboy.
It runs 10" wide wheels with 285/70R-15 tires.
The four bars are between frame and tire, things are close, but there's never been any rubbing.
Backspace is 2 7/8".

I have a 31 A on 32 rails project roadster that's running a 56" wide 9".
This axle places the 6" wide 15" wheels under the bobbed fenders just right.
Backspace is 3".
Tires are 235/80R-15.

I meant to add, the 57 Ford 9" rear - and a lot of the 8" rears - is 57 1/2" wide.

They work well under the early cars . . . provided you can find one.
You're only gaining 3/4" per side as compared to the accepted standard of 56" wide.

If you should be so lucky, try to find a 57 rear axle from a station wagon or Ranchero.
Many of these - depending on the engine - had 31 spline axles althought the 28 spline axles work well on the street when running an open diff.

WELL THIS REAR END IS 54 1/2 AND HAS 456 GEARS
WHAT WAS HE THINKING???
I DONT THINK I CAN GO ON A FREEWAY WITH 456S IN IT
IT HAS A 350 CID AND A 400 TRANS
I THINK I WANT TO PUT A 700 R4 IN
WHAT GEARS SHOULD I GET?
I WANT TO STILL GET RUBER IN 2ND BUT WANT TO GO 80 ON THE HIGH WAY?
THX AGAIN DAVE