Porting Question

1wild&crazyguy said

Btw skrews, are u using a stock 1.50 valve and performance valve job?

Dodgefreak, the only way u would hit water I'd if u went well beyond straightening it, the roof is pretty thick and Ive used this practice with all factory sb mopar heads and its worked nicely.

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I'm using 1.6 valves that are sb Chevy circle track take outs that I cut down to 1.55, 15* back angle with 11/32 stems, and 5.01" length. Got lots of them on the shelf as the circle jerker crowd replaces them every season. Using a 608 profile Serdi valve job (32* top cut, 45* .050 seat width, and a radius bottom cut) if I recall properly, along with a deshrouding cut and 75* bowl cut. Don't mind the 11/32" stems cause the guides will be getting replaced with bronze guides anyway, facilitating the use of 11/32 stems. The 1.55 dia. widens out the seat so that I get the full cutter form all the way down the bowl. Once the guides are drilled out to .5 for the bronze guides I go in and grind whats left of the guide flush with the roof and streamline the throat in to the port. Once the guides are in, and the valve job and bowl cuts are done I blend it all in. Its cheap, quick, and works good for me. : )