If these are stock unported heads I would take a peek at the FAQ section, and see where the heads stop flowing. If you're looking for coil bind I'm not sure so good luck.
I decided to go with a Comp Cam over th E-303. Although the spcs are very close, the Comp will have a different lobe shape that will probably work better in my case. You will be more limited by binding valve springs that anything else.
.490-.500 lift with a diff. of about 8-12 in lift in favor of exh. v. intake, with a cam that gives favor to the exh. side of things in dur. and lift. They also like a split in the dur. of about 3-6 in favor of the exh. Along with a good vavle job and matched springs thats about it on them stock.
.490-.500 lift with a diff. of about 8-12 in lift in favor of exh. v. intake, with a cam that gives favor to the exh. side of things in dur. and lift. They also like a split in the dur. of about 3-6 in favor of the exh. Along with a good vavle job and matched springs thats about it on them stock.