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'73 Challenger Resto-Mod

Taking the plunge to convert my '733 Challenger with 340 and 727 to a Gen III 5.7L Hemi and 8HP70 transmission

Narrowing the spring perches

This is a "retro post". I did this work before the accident, but I stumbled across some good photos and thought I would update this member page with the details. hopefully someone can benefit from this documentation. At the time I did this work, Dr. Diff was out of stock on the relocated spring perches, so I made my own. They weren't that difficult to make, and I was eager for a project, so I just made it happen. I wanted to go to 10" wide rear rims and the wheel and tire combinations that were out there made for limited choices short of making custom wheels, which were not in the budget. I made the front spring perches, the rear spring shackles, purchased the axle spring perches from Dr. Diff (heck for $25, couldn't make anything near that nice). Then had our welder from my work place weld them onto the axles. I strongly recommend hiring a proffesional welder whenever you're doing suspension work. You don't want to have a conversation with your insurance agent that you welded suspension pieces on your own. Furthermore our welder is a world welding skills US gold medal winner. His welding is off the rails.

I cut off the old spring perch and left enough of the outside of the old spring perch, which made tacking the new spring perch in place super easy, I just duplicated the same angle so that the pinon was at the correct angle. Once tacked in place, I took it over to my welder friend. I'll have to get some photos of the spring brackets and hangers when I get back to the body shop as I didn't aparantly take photos of them.

Enjoy.
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