[legenmetals]

Robert Pond is marketing Iron blocks as well as the aluminum.
At the end of the day its about all of the componets working together ie.bore and stroke,rod ratios(piston dwell at tdc and bdc,sidewall loadings),the ability of your cylinder head to work with the proper cam grind(flow numbers)blueprinting the engine,carburation.exhaust flow,ignition.All of these factors have to work in harmony with each other if not you may be spending money on parts that do little to increase power.The only substitute for cubic inches is more cubic inches but all the parts have to work together.Some engine builders have a formula that works for them and they stick to it but for me part of the fun of building an engine is doing all the research and analizing the methodology of the build.