Made in the USA
(weight in lbs. of car)*(speed in mph) / 1000.
This is the MAX for S/C. If you have a higher number than this, you must move to a stronger chute.
Super Comp 240 or less....Part # 400 Super Gas 330 or less....Part # 410 Comp Eliminator 400 or less.... Part #420 Pro Stock 460 or less....Part #430 Alcohol/Fuel Rail Must use 2 chutes....#440/450 Alcohol/Fuel Funny Must use 2 chutes....#460/470