set up for pro 4 tube frame car

[ltlgriff]

Bought full tube frame pro 4 car. Need help with set up 1/4 mile medium bank with tight turns. Car weighs 2,350 pounds on 8 inch tire. Any help with spring rates, bar angles, etc. Please help.

[crcltrakr]

Dirt or asphalt? Tire type. Max LS percentage?

[ltlgriff]

asphalt, no LS rule

[crcltrakr]

Assuming 60 percent LS, 300# coilovers across the front, 175 LR, 150 RR, 48 front/52 rear 3" ride height, gear for 72-7500 at the flagstand. for a 3 link, top link 5-7 degrees down to frame, RR 2 degrees uphill to frame, LR Level.

[ltlgriff]

what cross and caster camber? would it be close or the same as we ran in pinto?

[crcltrakr]

lf Caster +1, camber +1, RF caster-2, Camber -3 Cross 51-53 PERCENT.

Get a Ball park set up on it and Test and tire temps will tell the tale....

You haven't asked for tire pressures and shock and sway bar #s yet....

[robdog98]

I would run more caster. we run +4.5 RF and +1.5 LF.. This really helps with the turn in.
Also more LF camber doesn't hurt either.
Another thing to look at is rear steer. I like to run mine with none but others run the RR back 1/8"

[ltlgriff]

thanks jerry. shock valving and tire pressures was my next question.

[84Dave]

I just received the latest issue of Circle Track magazine in the mail. Bob Bolles has used almost the entire issue to display/discuss chassis setups for paved & dirt tracks with various bank angles. The guy is as close as it gets to being a true chassis genius! Be prepared for many answers to a lot of questions you may have regarding chassis setup! 84Dave