My engine has a stock 250 points distributor with the total advance at 34 degrees. This comes out to 8 degrees at idle.
Generally speaking a lighter vehicle with lower gearing will have less problem with detonation. My 68 Chevy K10 4x4 short step side weighs 3750 pounds on the scrap yard scale.....About the same as the GM listed curb weight.Stock gearing is 3.73
