It's a bit of an old thread, but saves making a new one.
I have a bigport 16 valve, that as far as I am aware is pretty standard internally. Apparently has had some porting done in the head, but this is not confirmed as I haven't taken manifold off/pulled cam covers off etc yet. I want to get some big duration cams for it. Big duration, but reasonable low lift so as not to need to change to shim under buckets.
I made a bit of an impulse Yahoo bid on a big HKS cam. 304°, 8.1mm lift. There is only one, so I'll need to get another, but price is cheap. Has anyone had experience with these big HKS cams? Also, am I correct in saying that exhaust cam can be put in intake, but not the other way around? This one is advertised as intake, but says can be put in exhaust, and it has the gear on it for the dizzy.
Also, before you guys get your knickers in a twist, in the (hopefully) near future I am going to build a 5A stroker with (I am thinking) 12:1 compression, so the cams should respond well to that set up, I believe.
Should I look for another 304°, 8.1mm cam, or should I stagger the sizes? No one has really said whether there is an advantage.
Cheers.
Edit - Should also mention, I will be running silvertop ITBs.