Thanks for all the input! but does anyone know about how much hp I can expect from switching to the eddy 63 cc closed chambered heads from the 72 cc open chambered heads?
Depending on what they had done to the 360 heads in the article, I would say that's a good benchmark to go by. If they had limited work done, then I would say about 25-45hp more using the aluminum head with same work done. If you use them out of the box, your looking at something pretty close to a set of worked over cast heads with the closed chambers. The increase in comp and the option to use the same fuel with increased comp in your case is worth doing alone in my book! I use Victor heads on my RB engine and would never think of using a factory cast iron head ever again! Hell just the weight savings is enough to convince me to do it again.. LOL!
You'll feel the differance in the seat of the pants after you put them on..:burnout: