Aluminum heads that equal EQs for power?

gregsdart said
My EQs have 2.02 +.050 8mm valves, springs, locks , retainers, all picked out by Brian at IMM to match the cam. The work done was bowl porting to match the new 2.02 valves, flow came out to 272 at .600, pretty consistent with the numbers for these EQs off other benches. The current heads dyno'd very well, work very well with the airgap making 504 hp on a 408 pump gas motor. So I don't want to sacrifice much if any port velocity, since my converter stalls less than the torque peak by about 500 rpm. My main reason for considering the swap is weight off the front of my Dart. Not a whole lot of traction below 40 mph or so. I figure with moving the battery to the rear and going aluminum heads I can significantly change the front/rear weight ratio. Add stickier tires, and it ought to do much better. I still have a steel hood but have coilover /rack and pinion front for weight savings up front.

If it's all about weight you can experiment other ways to figure out how much it will actually help... I'd relocated the battery and put on stickier tires first and see how it improves. You'd also lose roughly the same weight for a lot less cost and hassle by swapping that steel hood for a fiberglass one. Personally I wouldn't go through the trouble of swapping to aluminum heads if I already have good-flowing iron ones unless they're the "next level" in power potential, like the Eddy Victors or other big-port competition AL heads.