Many many variables. Cant single out a number, its whatever SLR the combo wants.

And if you are shoe polish racing sometimes less SLR is better.

My Dart with a Glide has a SLR 8.75 1.80 X 4.86

My old Duster has a SLR of 10.0 2.45 X 4.10


67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174