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WebNov 12, 2024 · When we first looked at this head, it was easy to see how Ford completely separates the two intake ports. No sport compact head does this so far out into the port. … WebBase price package includes porting your supplied cylinder heads Stock 2.165 intake valves Stock 1.59 exhaust valves Stock retainers, locks, and valve seals Prices include checking your valve guides for proper size, if … WebPorting and polishing a head provides this effect for the air/fuel mixture at higher RPMs. The cost for the procedure can vary widely from as little as $200 to more than $2000 dollars. A Stage III port and polish, however, is … slx 165 crankset