Valve lash compensation

Max1196 said
It idles at 800 but were using the vac can on the distributor to bring up the initial timing. It has a FBO restrictor plate in the distributor, without the vac it's 12 initial, with vac it's 30 initial. total is 34. No vac to distributor at 800 it's unstable at about 10 for vac, things improve with the vac hooked up to add advance. Static compression is 10.93 to 1

Thanks for the info. I tightened up the lash to .024"& .024". Mopar distributor set to 28* initial at 750 rpm ( in gear) all in 34* at 2000 rpm. The 302 heads don't like much more. Vacuum at idle (1000 rpm) is 10-11" and 6" in gear. I cured my Valve train noise. The new rocker arms had way too much gap. Got them set up to .025-.030" clearance.