Whose making the most power with Factory GM casting heads?
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#16
I think Im right up there with them. Not pushing water or anything, but sure seems like there is a lot of psi in the cooling system after I ream it good. Doesnt seem to do it below 20psi. Did they run long at this power level, any gasket problems?
#20
TECH Senior Member
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S88 Turbo,370ci motor, stock crank, Ported 317's, MLS Gaskets,Patriot double springs, 224/220 cam. Thru a Powerglide and S60 rearend and 325/50's.
At the track it would run all day with out pushing water ie(lifting the heads, preasurizing coolant system) at 20psi. It ran a 6.27 1/8 @ 119, 9.26@150 like that.
On the 1132rwhp pull it pushed water on the dyno.
Ran it at the track like that... 5.89 1/8 @ 127 and popped the head gasket and rolled to a 9.7 @137. Race weight was around 3350#
Kyle