Originally Posted by
woody80z28
I built a similar 9.7:1 Vortec TBI 357 several years ago. And I've been pretty underwhelmed with it. I've got the tune pretty well sorted, but it just doesn't seem to have the power it's supposed to. I've kinda chalked it up to the heavy 5spd.
Keith, I searched your 395 cam and I'm getting:
Duration at 050 inch Lift: 196 int./206 exh
Valve Lift with Factory Rocker Arm Ratio: 0.431 int./0.451 exh.
...which doesn't sound too much different than the LT1 roller cam I stuck in mine.
Fast, GMPP 357 shows:
Camshaft Lift (in.): 0.473” intake / 0.473” exhaust
Camshaft Duration (@.050 in.): 215° intake / 223° exhaust
...so a fair bit more duration and a little more lift. With my stock Vortecs it will definitely need a valvespring change.
Maybe that would be a nice upgrade to try.
BTW Keith, my wife and I vacationed in Australia last year. Brisbane and the beaches for the wife and Port Lincoln with the great whites for me. Best trip I've ever had. We're planning to hit Sydney and Perth next time around for Summernats or Powercrusie. What part are you from?