Make it handle

[robnolimit]

GrimeeFirst off, congrats on the invite to the Trucking Throwdown, it's a long and fun day. Sounds like a good set up. I have no knowledge of those contlor arms but I'll try to help. - even though you will be my competition at the Throwdown. For spring rates, I like to have about 4" of static spring compression at ride hieght, so on the rear, you have appx 930 lbs per side, at a 2 to 1 ratio, so 1860 on the coilover & spring. Divide 1860lbs by 4 inches gives you 465 lbs/in. 450 may be a starting point on the rear. With 2280 on the front, thats 1140 on each side. I'd about 1.5 to 1 on the lower arm, (just a guess, use your true #) So 1140 x 1.5 = 1710, divide by four inches to get 427 lbs/in spring. Before you go out and use a 450 spring up front, I'll help you out. Your Blazer is top heavy, and nose heavy so add to the spring rate in front to help control it. To your true number I would add 20% - 427 x 1.2 = 512 lbs/in. But again, this is a guess on the lower arm ratio. I run between a 500 and a 550 in front, 1880 ft wt, and a 300 or 325 in the rear, 1470 rr wt, 1.6 rocker. When it comes to tires, Goodguys rule is a 180 treadwear. Kumho's are the stickiest. Most other events are 200 tw, so Nito NT05, or the Falken 615. B F Goodrich supports many of these events, and without them we wouldn't get to go play so much. The BFG KDW tire is a 300 tw, and will last most of the season. I run the BFG's to help support them, and as of yet haven't needed to change to beat the competition, even on the stickier rubber. It's all about the set-up. The Tahoe's shorter wheelbase should be an advantage on the short coarse. Best of luck getting it together in time, and let me know if you need some more help. See you at El-Toro