Missed on this combo?
Mike , I know you are frustrated because I'm frustrated just reading and reliving my own experiences.
That cam is wrong, but until you fix/change the heads NO cam will give you what you want. I don't even care if you're chasing a dyno number. That engine as it is will SUCK if you don't treat it like a 340 (5000 stall/4.56 gear type stuff) You need to send your heads to a PRO like Vic Bloomer or Brett Miller and then you can stick almost ANY cam in and watch those dyno numbers grow AND the car will respond in kind. J.Rob
I agree. I can say I've never seen a Hughes port job. So maybe they ARE that shitty. I drives me batshit crazy when I can't test the head myself and all I get is the numbers. The numbers tell you about 25% of what you want to know.
IM also said this engine guy hated the exhaust port. I'd like to know why. Let's face it...the OE exhaust port is **** on a shingle in its best configuration. I'm still waiting for the weather to clear, but I'd like to the intake and exhaust both with 50* seats. When a head is struggling the steeper seats seem to help because it changes the air flow pattern around the valve, which helps with high air speed.
I believe you can get to where you want if you help the heads with cam timing. If you had well prepped W-2's you might get away with only 255 at .050 and still get the same RPM peak. And if the heads were real good, you'd see a 110-111 LSA. But they better be good heads.
I'm with RAMM. Reading this stuff makes my blood boil. I know where I've went off the reservation, and how much it costs. It's absolutely frustrating.
BTW, when checking valve lift on my W-2 engine, which had 300 on the seat and much more pushrod geometry issues than you have, was dead spot on with Norris rocker arms. They designed the rocker to compensate for the geometry. I know Jesel does this as well. B3 gave pretty close numbers about how far lift gets off. The rocker are can be made to get the ratio way closer under full spring load if they want to.
The Norris rockers were 1.6 and when measured with soft springs they were about 1.72 and with full spring load they were exactly 1.6.