SLR
Tod, to answer the best I can. The SLR chart is an old ATI chart for figuring startling line ratios. It takes Your rear end gear(4.86) and multiplies it by 1st gear in tranny(1.80)? and gives You a SLR of 8.75. An ideal SLR for a 4.00" stroke in a 2000 lb. car is 9.00. You are close, I corrected ,my self above after doing the math. Any way, if Your number is too high, it hits the tires too hard, If its too low You are not hitting the tires hard enough. A lot of hook problems were starting to develope when all these Low tranny gear ratios were coming out and people were just killing the tires. My dragster with the 4.500 stroke and same weight, I am way under with my 1.80 x 3.89 rears, when I get the 4.30s in there, Ill be just about right. My ideal SLR is 8.00, due to the increased stroke. :wink: