BIG Turbo build planned - turbo guys!

Brandon Weaver said

Out of curiosity, why would you hold one important and not the other? Personally, I would do both the porting and the large valves, because in my mind, least resistance is better most always. i would just think it to be less work for the turbo to have to do, letting you make more power per psi of boost. Keep in mind, that is just my opinion.

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Fitting larger valves to a cylinder head is, if the desired larger valve is the correct-length, with the same stem-diameter, and valve spring installed-height is the same as the originals, a slam-dunk to accomplish. Porting a slant six head is a time-consuming, expensive process, fraught with the possibility of hitting water, something that is not easy to repair.

I have heard prices that range upwards of $1,500.00 for a ported head, complete. Simply putting the oversize valves in, doing some "pocket-porting" in the valve bowl area and letting a couple of more pounds of boost make up for the flow restrictions of the un-ported casting could save upwards of $1,000.00 if porting is not utilized in the "build."

Unless the engine is to be a balls-to-the-wall, all-out, NHRA Competition Eliminator effort where every HP counts, it seems to me that it makes $$$$ sense to allow the turbo to make up the slack by adding some extra boost in lieu of spending another grand on porting.

Just my 2-cents... :happy7: