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Old 02-03-2012, 02:35 PM
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coilovers sizing

I am planning on replacing my coil-overs on the rear of my car, since this is a 31 chevy coupe all steel, 12' GM rear, i don't know how much it weighs. I have been looking at Speedway's AFCO, or QA1 coils but not sure what spring rate would be the best. If anyone has a suggestion on spring rate that would be helpful. sc
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Old 02-03-2012, 03:12 PM
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coil overs

a t bucket usually runs about a 150# spring.. ur a little heavier so look at the nx size up... that'll get u really close.. don't forget the angle makes a differance too... the more angle the more spring...
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Old 02-03-2012, 04:35 PM
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I used

90 lbs to 120 lbs on the rear of a 2650lb Stock car on a dirt track 5/8s mile at 115 mph on a banked track surface and never had to go higher to be competitive. The rule is the lighter rate the better front and back..
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Old 02-04-2012, 06:01 AM
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Several posts previously - including mine for my '31 about that very subject. I ended up with 200 rear and 325 in the front. These are corrected for inclination to 188/300. So far seem to be perfect. I used the Speedway/AFCO charts for my general choice and it worked. Plus they are pretty too

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Old 02-04-2012, 07:39 AM
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coil-overs

thanks for all the post its looks like a spring rate about 175lbs for the rear will be a good place to start. my springs look to be about 15- 20 degs from 90. The AFCO ones look nice and won't break the bank. sc
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Old 02-12-2012, 03:06 PM
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Quote:
Originally Posted by Irelands child
Several posts previously - including mine for my '31 about that very subject. I ended up with 200 rear and 325 in the front. These are corrected for inclination to 188/300. So far seem to be perfect. I used the Speedway/AFCO charts for my general choice and it worked. Plus they are pretty too

Beautiful...
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