Just working out the kinks now that the 66 is finally moving after a 1 year build.
I'm getting a vacuum reading of 11 at idle in park.
I bought this car "in progress" so here is what I know:
351w circa 1978
rebuilt 1969 heads (PO mentioned he did this to raise compression numbers)
Original pistons, new rings and bearings. Rings were cast, he mentioned, for a quick break in period.
Edelbrock dual plane manifold (think it's performer 351w..)
Holley 1850 / 4160 vacuum secondaries 600 cfm
Comp cams XE268H-10 duration 268 intake 280 exhaust 110 separation .51 lift intake .512 lift exhaust 35-242-3 - Xtreme Energy? Hydraulic Flat Tappet Camshafts
I don't know if it was degreed when installed
I did not re-adjust the valves. They seemed right by feel, I could just spin the pushrods when not on a lobe, know that is not a certainty.
I've put maybe 20 miles on this thing max, maybe rings are still seating, don't know exactly if he honed the cylinders, assume so he seemed to know what he was doing.
I do get some light smoke coming out of the breather while it is running.
Moved timing around from 12 - 16, which moved the idle not a huge impact on vacuum reading.
I've adjusted the idle mixture in until it starts to stumble a little then back out until relatively smooth
it idles well, little lumpy if I drop it too low, 800rpm in park 550 in gear.
Vacuum reading from full manifold port on the carb (where the trans modulator line was hooked) pcv not installed yet, that port is plugged on the carb, no power brakes or other vacuum attached except disty advance.
So, do I have issues? Seems to run pretty darn good, it's fast.
Thanks, sorry for long post, wanted as much detail as I could include.