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Power potential of World Products SR Heads

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Power potential of World Products SR Heads

trpositd trpositd
User | Posts: 70 | Joined: 11/05
Posted: 06/23/10
12:18 PM

Can anyone give me a ballpark figure as to the max horsepower potential of these heads?  They have 2.02/1.60 valves, 170cc intake runners, 76cc chambers.  They were installed out of the box.

Right now they're on a 350(.040 over) with 9 to 1 compression (flat top hyper pistons), a .480 lift/230 deg duration cam, air gap manifold, holley 770 carb, 1 5/8 headers into 2.5 flowmaster exhaust.  

I'm guessing it's making about 350hp now.  The car now runs mid 13's in the 1/4 mile.  I'd like to break into the 12's.  I think that should be posssible with these heads, but I don't know their power limitations.

I don't want to spend a lot on other parts if the heads are the real limiting factor.  

dond1965 dond1965
User | Posts: 72 | Joined: 11/13
Posted: 12/18/13
08:25 PM

naturally aspirated those heads can maybe make 500 horses or so. at least thats what the dyno sim said when i put them on the big cube e-85 motor after i took off the big 230cc port heads. Laugh