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  #1 (permalink)  
Old 03-15-2007, 10:50 PM
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Need to Raise back end of 72 Nova

Guys I need help

I have a 72 Nova Street Car. Rear leaf spring suspension. Running P235-60-R15 tires. Stock body and axle housing (except I shimmed the axle housing (4 deg shim) to set pinion angle and now clearance is even worse).

Is there a way to raise the rear of the car - so that the rear quarters have more clearance from the tires? Remember on those cars the axle sits on "top" of the leaf springs. Would longer shackles do the trick. That would raise the rear of the body wouldnt it?

I have tire clearance issues - when the car is just sitting, all is ok, but if I go over a big bump or put 3 or 4 people in the car - the rear tires (especially the driver side) will likely rub the sheet metal and tear the tire up. I've also heard of guys "rolling" the quarter sheet metal lip- what' that all about? Is is turned over or under, or just cut out?

Lee

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Old 03-15-2007, 11:28 PM
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72 nova

Hey, I've used air shocks, don't recommend it; built longer shackles out of 1/4 x 3" plate, lots of work but if done well works good. I really like the idea of spring over axle conversion, but I think it would give you way too much lift. I don't like the generic shackles at parts stores, they're pretty flimsy, don't provide a lot of support when cornering. When done building mine, I installed them and then put 2 2x3 blocks one on top of the other above the end of the spring and welded it all together. Solid as a rock. Mine ended up 11-1/2" center to center on the bolts. I believe the springs on the nova have the axle pad bold in the center of the spring, so if you measure how much you need to raise the fender above the tire and double it, that should get you the length you need to add to your stock shackle length. Good luck.
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Old 03-15-2007, 11:29 PM
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You can get shackles, air shocks, or a better offset wheel. I had 235/60r15 o my car with 4" lowering blocks and they never rubbed. I got 295's with air shocks that tuck a little but when I need more room I just put some air in them.
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Old 03-16-2007, 12:32 AM
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72

My only suggestion with air shocks it to get a kit with separate fill valves for each side so air doesn't pass from side to side as you corner. It can kind of push you over, make your handling worse.
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Old 03-16-2007, 05:40 AM
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I'm assuming you have multi leaves.I took mine from a 73 Nova ,removed any bad springs,added more from other spring packs(7 on pass. side ,6 on driver side)clamped just front leaves super stock style(no traction bars) it raised it about three inches.I was using 275/60-15 with no problems on my 1970 Nova. p.s. it rode pretty good and would go straight when I put the hammer down
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Old 03-16-2007, 08:54 PM
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guys - I just got a "ballpark" measurement of my backspacing on those Centerline Aluminum wheels. It's about 5 inches - which should be good right? There is still plenty of room "inward" for the tire to move though. If I had more backspacing that would solve the problem.

Lee
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Old 03-16-2007, 09:22 PM
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Just an fyi, don't use shackles-will screw up your pinion angle again. If your springs are sagged, get new ones. You can add an extra leaf or 2 as well with no adverse effects other than a stiffer ride. The new leaves will go below the main leaf so they will not raise the differential up any higher (lowering the car). Also air shocks are not a good answer because the shock mounts are not designed to support the weight of the car. Can easily tear mounts off the rearend or the frame.
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Old 03-17-2007, 09:36 PM
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Do you have 7" or 8" wide wheels? You can run a 15x8 with a 4.5 bs with 275/60r15 tires and not rub. I dont know how you measued it but 5"bs and still have a lot of room left sounds odd to me.
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Old 04-01-2007, 11:15 PM
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shackles would be the fastest, cheapest and esiest way to do it!
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Old 04-02-2007, 07:35 PM
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You should be able to find a metal or welding shop that would cut the desired length and punch the holes for you for under twenty bucks...that what it cost me anyways... I used 1/4 x 2in strap....
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