So, I thought I would use the rear axle too from the (engine and tranny) donor car (1986 LeSabre STW) for my 1948 Pontiac. Basically have everything fitting nicely but the axle is so wide that it leaves me with very few and limited options when it comes to rims and tires. The axle is a 10-bolt 8.5", just over 64" wide (flange to flange). So now I am looking for a narrower, say about 61" rear end that would fit the same drive shaft setup and have the same 5x5 bolt pattern. I think a 7,5" axle needs a longer drive shaft, right? What about u-joint dimensions, same for 7.5 and 8.5"? Could I re-drill an axle with 4.5" or 4,75" bolt circle to 5"? Being in the northernmost corner of Europe does not help when trying to source big&heavy parts either...
I will throw this out there. is there a good machine shop around might be able to narrow that rear to the width you need.
I know these are Ford and the bolt pattern would need re-drilling but..HRP 1971-1973 Mustang 61.25 inches 1967-1973 Torino's, Ranchero's, Fairlane's 61.25 inches
A 1971 and newer chevy pickup [2 wheel drive] will have a 5 on 5" bolt pattern and a '71 0r '72 should be in the 60-62 inch range.
Have you considered IRS from a Jaguar, Mercedes, or BMW, something easier to find locally? Or an axle from a light truck?
Thanks for your input. I have now tracked down some rear ends that might suit my needs One that I have not been able to find the specs for is a 1988 Caddy Brougham, it should be a 10 bolt with 5 on 5 but is it a 7.5"? Have not been able to get any pics.
Have a look at this. http://www.roadkillcustoms.com/hot-rods-rat-rods/Rear-End-Widths.asp#axzz33JG7dSoW
I have a buddy that just put a 80's Caddy Seville rear in his 49 Buick. Fit perfect and it has disc brakes and 5x5 bolt pattern. Its a 8.5 ten bolt so it should work for you. The worst thing you may have to do is replace the pinion yoke with the one you have.
1982-2004 (The entire domestic model life) Chevy S10 pickups, the Blazer, and the GMC equivalents, were all 5-on-4-3/4".