Ok I am getting ready to order my rear leafs and have it narrowed down to 2 (unless someone has another opinion). Landrums 225 mono leaf or Calvert's 200lb ones. I am using Cal-Trac's. The car will see maybe 5 days a year on the street. Which ones would you guys reccomend? What about fiberglass, I hear they break, and I hear not? Thanks. By the way I will use the GM rear shackles with graphite bushings.

Call Jon at JRC 608-825-1060 and talk to him about the Trac Bites. Great springs and you can tune them if you want.

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70 SS 454 CI 650+HP All Aluminium Fuel Injected Small Block

Global West and Detroit Speed & Engineering both make some excellent springs. They have an extra leaf on the front side to prevent spring wrapup.
200 lbs/inch is pretty stiff... I don't know many guys who use more than a 180 lbs spring in the back

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1971 Camaro
350 / M21 4spd
12" brakes
16x10" Wheels
Autocross competitive
'83 VW GTI FSP for daily driver
Sales / Tech - The Speed Merchant, San Jose, CA
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Edgar I dont know anything about your car but it seams to me like you do most driving on tracks?. Travis at Calvert Racing sent me this
"Too soft of a spring rate will allow the car to bounce or squat too much or
feel to loose at high speed. We have tested a 175lb. spring rate and found it
to bee too soft and have also tried a 225lb spring rate which was a little
tight. The 200lb. spring rate work the best and had best all around performance. Travis@Calvert Racing"
I dont know if this help you.

Rick: I talked to Jon, they seem like great springs, but for the ones I want they would be close to $600. And not sure if I want to spend that on springs.

Lowend: I looked at GlobalWest, anyone running these, with track experience? Do you have a web site or phone# for Detroit?

Tuk: Same info I got from Calvert, are you running this set up, what do you think?

My car will see mostly track. Even on the street it will be around town with no highway driving. I am running Global's 420lb rate springs up front with a SBC (their rec.). i'm making the car as light as possible.

What about fiberglass, are they strong, can they handle 600 ft. lbs. and launching with a trans brake?

Edgar im about to buy the monosplits 200 lbs springs but shipping only to Sweden is $235 so om trying to figure out if there are any cheaper way to get them to Sweden.
BTW you can forget about the glass ones they cant handle that kind torque.