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#1
04-29-2012, 08:45 PM
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Rear spring rate in a 1971 GTO?
I am taking out the moroso trick springs and installing a set of QA1 coil over springs[just the springs]. I am wondering what rate should I start with? The trick springs were 160lbs. so I bought 170lbs. springs,is that a good start?
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#2
04-30-2012, 07:43 AM
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I don't remember if you posted your weights before, but I used QA1 12" 150# springs in the rear of mine. My '71 weighed 3450#, 1500# on the rear.
Bryan |
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#3
04-30-2012, 08:24 PM
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Are you running a anti rollbar?
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#4
05-01-2012, 07:32 AM
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Yes, when I still owned the car, I was running a welded-in ARB.
Bryan |
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#5
05-01-2012, 09:20 PM
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How fast was she and want kind of 60 fts. did it do?
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#6
05-01-2012, 10:43 PM
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On spray...60's were 1.36-1.32, 9.40-9.20's @ 146-148
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#7
05-02-2012, 01:08 PM
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I installed 170lb 12" springs in my 72 lemans. Weighs in at 3875. It sits perfect in the rear and after cutting 1 coil out of the stock front springs pefect in the front. It's just an 11.90 car.
In the 67 I have 130lb 14" springs, Car weighs 3200lbs. I went with 14" springs on the 67 because 12" springs would just fall out when I jacked up the car. |
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