On the track, I noticed a issue coming off turns rolling the throttle on, id have to feather the clutch to get it "back on the pipe". Over a season at the track I tried different PV settings, porting, head and timing never went away. Went to a Dyno and confirmed my suspicion. Made about 20 runs on dyno with one particular cylinder head I really like tried jetting and PV to take it out and did not work.

Immediately swapped to a FTZ pipe similar curve, just had to reset the pv to take a small variation out.
Then went to the Dynoport pipe more Tq and Hp but no over rev, just have to gear a little taller and shift earlier.

Was hoping to see a new Pipe from HAll's to try but he is just backed up working alone.

I've talked to Dynoport and there's a good possibility we will do a new Pipe to work with my bigger Small Block engines and ill see if does anything for the 265. I think there's some more hiding in the pipe's and I know there's a little left in the porting, just have to go after it.