67 Fastback getting 8.8 rear

Picked up a 8.8, 3:73 limited slip, disc brake axel assembly today from a local yard. $200.00. Going under my 69 Dart, 383/4 speed (originally a 6 cyl car). Front suspension a coil over from QA1. It’s a work in progress.

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Here's an update on my narrowing the 8.8. Followed the process posted previously by 67/6barracuda. I drilled out the plugs and the final drill size is a 5/8ths. After drilling, I tried a 4 ton porta power ram but it didn't have the power needed to press out the tube....a bought a 10 ton (returned the 4 ton) and it broke the tube loose and was able to remove the tub. I cut the tube to the required length and tried different attempts to press it back in but in the end added tubing to extend the legs and the pressing length to accommodate the axle. One thing I found that is an absolute must is cleaning up the tube end and housing to remove ANYTHING that would appear to be an obstruction (burrs and alike). I did smear a little antiseize compound to help lubricate. The jack size in the press is 12 tons...I don't think anything less would do it. Honestly there were moments when I questioned whether or not this was the best way to narrow the rear....but like anything else when it's done the doubt left. Hope this helps others...

Extended the press legs
Axle3.jpeg
Housing/tube cleaned up prior to pressing in.
Axle2.jpeg

After the press in
Axle 4.jpeg
Before the cut
Axle1281.jpeg