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Old 04-09-2013, 08:48 PM
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coil over shocks

hey everyone....I was wondering ,can anyone tell me the best coilover spring rate for a model A? It is the normal 350/350 set up with a s- 10 rear end.Im thinking it was 200 but cant remember,its been a while since my last build. Thanks

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Old 04-10-2013, 06:49 AM
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coil overs

off hand i don't know.. but sure someone here will.. but u can go to speedway and look at the chart an see if that helps...
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Old 04-10-2013, 08:48 AM
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What is needed is the axle weight..Just by example if we have a 3000 lb car that weighs 1765 front and 1235 rear then knowing that we can pick some springs that are close to what we need.

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Old 04-10-2013, 10:18 AM
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Im using QA1's on my "A", and if i remember correctly, they are 450's in the front and 350's in the rear....its fairly stiff, with approx. 3" of adjustment taken up on the adjuster screws......
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Old 04-10-2013, 12:16 PM
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Currently on my full fendered '31 roadster I have 200# AFCO's on the rear and 325 AFCO's on the front. At the 13 degree shock inclination, they are rated 188 and 300 pounds. I also have a 14 gallon '32 style gas tank which adds a fair lever arm. This combo has proven after a good many miles to be just about right for that SB Ford powered car with about 4" additional engine setback, moving the CG back somewhat. Speedway has a pretty good chart that will give you a ballpark choice:

http://static.speedwaymotors.com/ima...rts/AFCOIL.gif

Don't over spring it or as I can attest - you WILL pay in both the billfold and your backside pain
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Old 04-10-2013, 01:34 PM
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Using QA1 12 point adjustable on my full fendered 29 Ford coupe with Mustang 2 front end. I went to their site and looked at their charts. Guessed the weight at 2500-3000 lbs. It rides like a caddy now. Made a big difference. Being adjustable you can dial in about any ride you want.
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Old 04-10-2013, 01:48 PM
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If you can, take your car to a place that has truck scales. They can weigh your car with each axle on a different part of the scale so you will the know the weight per axle as well as the total. Weigh it with you sitting in it, and the tank full.
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Old 04-11-2013, 06:57 AM
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I just ordered a CAChassisworks 4 link rear clip for my '63 Rambler American and they are shipping 150# rear springs for the coilovers. My car will be light, but I'm pretty sure it won't be as light as yours. As Ireland said, you will need to account for any inclination too.

Russ
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Old 04-11-2013, 01:47 PM
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coil over shocks

Thanks guys....appreciate the input,helpful,as always
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