Stacking aluminum lowering block?

Mojoe9955 said
I looked at my springs, not sure, but I think they are 2835046 which I'm unable to find anywhere. The closest I can come up with is 2835064 which according to an old for sale post here fit a 69 Dart 340. According to General Spring that spring in a similar configuration 6 leafs with 35" rear and 20" front segment will work on 64 to76 Dart/Valiant and 64 to 69 Barracuda as well as providing 2" of lift. They are used springs that have a decent arch and as I said put the rear super high.

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Well if they're 2" lift springs that would certainly explain the arch and why the car sits so high in the back. The best way to deal with that would be to have them de-arched

Mojoe9955 said
I had 255/60/15 tires on it. This morning I swapped over to some 275/60/15 which are almost an inch taller and I like it a little better. The backspace on the Torque Thrust is only like 3 inches so they stick out a little on early B body 8.75 that is on the car. The 255's were on cop wheels which I think are 4 inch. Maybe the 275's on the cop wheels, get the front end up a bit and call it a day?

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Which B-body rear axle do you have?

Cop wheels are 15x7 with a 4.25" backspace. With any B-body rear that still won't be enough to clear 255's on those rims with you lower the car, let alone 275's.

I have a 68-70 B-body rear axle in my Duster, and even at stock ride height the most that would fit on cop wheels was a 225/60/15, and they were very close to rubbing. The 68-70 B rear is 60 1/8" wide, even if you have the shorter 65-67 rear that's still 59.5" wide, so you'd only gain 5/16" in clearance per side, which probably wouldn't even get you to a 235 unless the quarter lip is well above the tire, like it is now. To clear 275's on a stock height or slightly lowered car you'd need a lot more backspace.