Going to dump some money into my engine after a head gasket blew last summer but dont know which way to go. I have plenty of experience building big blocks for automotive but no jet experience. Decided to tear down the block to verify parts that the owner said were there.
Here's what I have now:
'77 Tahiti 18' with I think 12jc with A impeller. not positive on the jet info though
460 bored .060
Cast crank and rods fully balanced
Flat top pistons
Clay smith cam: 244 int/exh duration @ .050, .570 lift, 108 lobe center
Dual plane intake and 850 cfm Holley dp
Current setup was running 69 mph on gps
Already purchased a tunnel ram and want to run that.
Option one I am looking at is:
4.5" stroke rotating assembly with dished pistons to put it about 10:1
Porting the D3VE heads (have experience doing this already)
**Cam choice I am clueless on. Clay smith says I should not be running a hydraulic cam meaning switch to solid lifter. It would be nice to save money and run my cam I have now.
Edelbrock rpm heads
once again Clay Smith says use a solid lifter. They suggested a .258 duration (@.050), .615 lift, 108 lobe center. To me this seems to low of a cam to even really make use of a tunnel ram.
Question is what would be best bang for the buck to get all around better performance and a bit more top speed. Obviously I'd like to do both but that's just not in the budget. Seems to me the stroker would be all around more fun.