How high are you spinning your short deck 565's? I have been spinning mine on a 275 shot to only 7000rpm... wondering if spinning it higher will help...
582 cid aluminum Brodix 9.8 short deck Brodix 1802 heads single PS SV1 carb RM Erson n20 camshaft 117 lsa 500 HP over 2 foggers...spin it to 7600 on 1-2 shift & cross at 1/4 at 7800.
friends 69 chevelle on big spray(7.40's)with full kill mode shifts between 8500-8800....depends on your combo, and your goals. whats your full combo, others can help more if u list your exact combo