400 motor with 16 or 62 big valve heads
I currently have a 400 with 14 heads and the original tri power setup. I have a set of 16 heads from a 68 Firebird - big valves, screw in studs, and small chamber ~72 cc (need to get exact). I also have a set of 62 heads, but have been told the 16s flow better. I would also like to add a camshaft if swapping the heads. (My goal is to get the motor to 350+ hp with a nice broad power curve.) My concern is the compression ratio and 91 octane here in socal.
My questions are:
(1) Can I effectively lower the CR enough with a thick head gasket?
(2) Is there a popular camshaft that would not only make more power but also lower the CR? Any specific recommendations would be great!
(3) If options 1 & 2 won't be sufficient in lowering CR enough (to ~9.25:1), I guess I need to build the bottom end with dished pistons ?
1965 GTO Convertible 3 speed tri-power drum brakes originally
400 cu in with tri-power
4 speed Muncie