fishman1

I have a 2500 pond car with me in it that ran best of 10.26
383 sbc.....victor jr heads 215cc intake runners........comp cam roller solid .650 lift....268-272 duration......850 hp4150 carb....hurricane intake ported..... 1 inch phenolic spacer.......1 3/4 headers open......12.5 pistons......powerglide 8 inch 5300 stall......5.14 gears and 32x14x15 slicks....i ordered the new afr elimnators competetion heads that r 210cc intake runners and flow 311cfm @>700.the old heads may flow 285 cfm..........how much hp will i gain and what kinda times could i expect....hopefully in the nines.maybe 9.99.......thanks