nm9stheham said

Here is an alternative for you to maybe get around any re-balance work......

• Use the KB399 domed pistons with are 26 grams heavier, and in a .060" oversize will be getting pretty close to stock weight
• Use the 360 heads unmilled

Now your SCR with a 1008 head gasket is 9.6.... pretty good and will further help with your altitude challenge for dynamic compression. With the 256 cam, the DCR is 8.1 (equal to 7.3 at sea level) so you now can increase the cam to the 262 (or perhaps even a step more) to better use the breathing of the bigger heads .

Click to expand...

Wyrmrider said

Jones cam YR I'll check there are some comments on the dino sheet elsewhere on the forum AJ I think
remember this is a 343 AMC with 360 crank
but closest I have a sheet on for Jones cam in a small block I have used this cam in 318 but with much more compression in a 440 it's a motorhome cam
in 318 it's Big as in deep breathing will go 6000 but over the top see the printout
for those familiar with the DC/MP 260 Jones cam is 50% bigger above .275 cam lift- but shorter seat duration measured at .004
OP
did you ever figure your compression with down the hole pistons and 360 heads
usually you can make a low compression Horsepower motor work with gears and rpm for racing but not street-able we did it in stock
but you could burn kerosene
do the pistons
That Howard cam is a great one also but too big for any low end output with low compression
as I said before Lunati Voodoo has more choices in your target cam range
2 motors and neither has a decent cam and lifters?- with your compression even stock duration is too big- there is just no way to build any cylinder pressure
Isky Mile-A more maybe
summit is worse than the comps (well made but obsolete)
If you need a cheap cam get a regrind by someone who knows mopars
nm has some ideas worth considering

Click to expand...