Help w/ leaf springs - Team Camaro Tech
Brakes, Suspension & Steering Conversion questions, Steering & Handling

 
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post #1 of 7 (permalink) Old Jul 27th, 03, 02:40 PM Thread Starter
 
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Help! My car (68 plain jane) was sagging on the driver's side rear by 1.5", which was causing the new quarters I had put on this car to chew up my new Firehawk P27560R15 tire when there was any kinda bump in the road. I took it to a very well known local spring shop, they replaced my sagging mono leafs with new multileafs and new shocks. After driving it a couple of days, I noticed I was STILL into the tire sometimes, but not nearly as bad. I measured it, and the driver's side is still 1/2" lower. I checked with the spring shop, they said that 1/2" is normal to allow for the "crown in the road". Anyone ever hear of this?? Sounds fishy to me....and it seems to be getting worse. I took my kids for a ride and it was really bad then. I measured it again and now it's 1 inch off....any thoughts? Thanks!!
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post #2 of 7 (permalink) Old Jul 27th, 03, 04:18 PM
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Have you checked your body mounts? If they are deteriorated or if the frame has rusted through around the bushings it might help explain some of the leaning.

The 275/60 tires might be a little tall. What rim are you running and what backspace? Worst case you might need a different rim backspacing and/ or need to roll the fender lip to keep it off the tire (or put on a smaller sidewall <55/50 series> tire).


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post #3 of 7 (permalink) Old Jul 27th, 03, 05:12 PM Thread Starter
 
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The rims were on the car, I was told they were Vet type rally wheels, how do I tell the size and backset? I'm a newbie, so thanks for the help!
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post #4 of 7 (permalink) Old Jul 27th, 03, 05:13 PM Thread Starter
 
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Also, the passenger side has always been fine, no problems.
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post #5 of 7 (permalink) Old Jul 28th, 03, 02:54 AM
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Take the wheel off the car, lay it face down, place a flat edge across the rim lip (across the diameter of the rim) and measure from that edge to the inside face of the rim (mounting surface). That should give you the backspace. Most likely it is about 3.5 to 4.0 inches or so if it is a Corvette Rally rim.


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post #6 of 7 (permalink) Old Jul 28th, 03, 04:04 AM
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One more thing to look at would be the height of your front end. My car was 3/4 low on the drivers rear. I believe the factory spec is 1/2. I checked the front and found the drivers side to be 1 inch low. After reading alot this message board I installed a spring spacer in the seat and brought the front to within 3/8 and the rear is now level. I would have preferred to installed new springs but didn't have the money at the time. Good Luck
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post #7 of 7 (permalink) Old Jul 28th, 03, 04:15 AM
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If you are still unsure about how to measure the back spacing on your wheels, you can find instructions and pictures in the wheels section of the Summit catalog on measuring both backspacing and bolt pattern.
While it is not a specifically Chevy catalog, there are lots of hi-po parts and best of all,,,it's free!

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