thanks Sheldon,I actually have 3,yes 3, pairs of restored hemi carbs right now and I have tried all three on the car with no difference.I think im going to install a smaller cam (comp 278) and im going to carefully check the intake manifold fitment tomorrow.i have to assume the intake must have been leaking to cause the low vacuum.

im thinking the comp 292 is too big for a 100% completely stock car with auto trans,stock converter and 3:23 gearing