Spring offset and rim and tire size 68 Barracuda for thos who have done it

t. stretched front of quarter panel to inner fender

NOT NECCESARILYTRUE MINE HAD TO GO INTO THE FRAME A BIT THEY ARE WIDER THAN 1/2' Wanna bet, and come and measure them ? I MEASURED THE OFFSET BOLTS (STUDS) THEY WERTE A LITTLE OVER 5/8" =3/4" IF THE REST OF THE DEAL IS 3/4" / CLOSE ENOUGH ! I massaged the inner wheel housing from past experience, this ain`t my first rodeo ! Am running 295 65 15 drag radials on it w/ no rubbing . Blow my avatar pic up if u know how, "I don`t" !

Ok tough guy. Turn off your caps lock and settle down.

There's no magical substance the "old" MP offset hanger brackets could be made out of that would allow them to move the springs by 3/4". You know why? Because there's only a 1/2" between the standard front hanger and the frame rail.

IMG_4888.jpg

That's a standard front spring hanger (not stock, it's a reproduction, but still a standard location hanger). That's 9/16" to the frame rail, and that's generous. So, even if the MP 3/4" hangers put the hanger right up against the frame rail, they might get you 9/16". But since they're not right up against the frame rail, you get a 1/2". The shackles are offset 3/4", the hangers are offset a 1/2". If you put the perches 3/4" in, you pull the springs on an angle, but you still don't get a full 3/4" of additional clearance at the sidewall where you need it. Not on the front. And again, it doesn't really matter, because even if you only offset the springs a 1/2" everywhere the tire will still hit the inner tubs before it hits the springs. How do I know this? Because I have the MP 3/4" offset hangers on my Duster. I measured them, realized they only move the spring a 1/2", and welded my perches at a 1/2" in. I put my rear spring sliders a 1/2" in. And before I installed my sway bar, my 295's would occasionally rub on the inner tub. Not the springs, the inner tub.

Doctor Diff says the same thing. And I'm willing to bet Cass has done this a whole lot more than you have.

It doesn't matter how far you offset the rear shackles or your spring perches.

Because a stock hanger mounts 1/2" away from the frame rail, you can only move the front of the spring 1/2" inward per side.

The front section of the spring is the limiting factor.
Offset spring shackles hangers set ups

Installing offset hangers and shackles on an A-body aligns the outside edge of the leaf springs with the factory wheel tubs. This yields an additional 1/2" of tire clearance per side.
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