318 1/8 time improvement

My 68 Barracuda 367/A833/8.75 was 3650 on race day, me in it. Probably 3450 on it's own with about a half a tankful.( aluminum heads and intake, P/S, P/B, front sway bar,friggen heavy HD shocks, fold-down rear seat, full length 3in/3out duals,alloy wheels, no spare or jack.)