Thread: Spring rates
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Old 04-01-2006, 03:23 PM
sideoiler10 sideoiler10 is offline
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Join Date: Jul 2004
Location: Rolla, MO
Cobra Make, Engine: Shell Valley, '67 Cobra, 1966 427 sideoiler, 2x4s, w/NASCAR toploader
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Default Reply to Quickquarter: Coilover shocks and springs

I have a Shell Valley Cobra running a '66 427 sideoiler. I have not had it weighed, either all of it or the corners, but I have been told by Shell Valley that with the FE engine, 1 3/8" input toploader, and 9" rearend their cars weigh in at 2500 to 2600 pounds.

About a year ago I replaced the shocks and coilovers with QA1's all around to improve handling and ride performance. I have also found that the coilovers have very little shock travel on this type suspension (the springs are only 7" long uncompressed). When I replaced the rears I followed Shell Valley's recommendations and went with 250s. I wish now I had went a little heavier as the rear feels a little bit soft if a passenger is in the car. That only occurs if you hit a dip in the road at speed. Lets face it, if someone wants a nice smooth ride they aren't going to be considering a Cobra in the first place. They are supposed to be brutally uncompfortable.

Good luck, Bob
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