high horsepower?

D

dubuick

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i have 69'buick gs with 455 aluminum stage 2 heads 9.o :1 cr a small .490 lift cam 3500 stall in a 3800lbs. gs. The car would run 11.40s at 116mph.
Now i have gone to 12.5 cr .620 lift 508s t/a cam,
the heads are being ported by greg gessler with 2.16 intake valves. just wanted to know if anyone had a simuler setup to compare too how the car will run wishing for 10.50s or faster
 
Not sure about what your times will be, I am looking to build my 71 GS 455 to run comparible #'s as yours. What year is your block and what are you running for rods, pistons, lifters, rockers, induction and ignitions? Also do you like the cam you have and what brand is that? Does it sound like a bracket car and what do you idle at? Also hows the driveability of it?

Dave Ski
 
I'm not to sure of the driveably its not running yet but as to run on race gas.the block is 73' stock chank, rods(which i have been told are good for only 600 hp)JE 12:1 pistons, t/a performance aluminum heads ported by greg gessler 340 intake 235 exhaust at .600,roller rockers,the cam is a t/a performance grind # 508s .620 lift,t/a sp1 intake,100 cfm carb, 3500 stall(which is a little to tight)4.10 gears 29.5 tall slick i have been told about 650 hp and should run in the ten's i run in a Central mass drag racers assoction bracket program
 
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