Yeah, figure out the Compression ratio first... At 11:1 with that cam installed in the factory position (5 degrees advanced) dynamic compression should be about 8.4:1 and about 220 PSI, too high really for pump gas. IF you back it down and install it straight up you will be down to 8:1 dynamic and 200 PSI. This is still a bit on the edge, the tune will have to be really good. it should idle with 19" of vacuum though so nice and smooth. I was kind of in the same boat with my build (383 though, I had bought the one smaller cam). I ended up ordering a custom cam that should work better and still have the desired running characteristics I wanted, smooth, stock like idle and more power than stock. I ordered mine form Jones Cams.
Garth
PS the Jenson is super cool BTW...
