Update,
cylinder pressures are between 165-170psi so far.
I found disturbing plug readings and found there to be too much total timing[37*] now 32*/24*intial. I'm gonna raise the initial and make a bushing limiting advance to 4*=28*initial/32*total. we'll see what it ends up being when I do some testing though.
Right now in 1st it'll rev 6500 and then shut off, keep in mind it has an LD340/750 on it.
The combo
.040 over 360 studded + 4''crank=410cid
9.9 compression KB hyper quench domes .038-.041 quench height.
H beam rods
windage tray
stock oil pump
Engle solid cam .573 lift 252*@.050 284* adv 110cl installed 109.5cl
Billet roller chain
1970 J heads ported 270/
[email protected] lift
Roller rockers=gets .560 at the valve [minor geometry issue]
Tiny 1 5/8 headers into 2 1/2 dual exhaust
750 dp Holley 74/83 4.5 pv @ close to sea level weather
LD340 Dual plane, no port match just rectangled the windows from there original triangulish shape.