Well here is the info.
1969 302 v8 bored to 306, comp cam XE256H, standard replacement pistons, moly coated iron rings, stealth dual plane hi rise manifold, holley 4150, 570cfm carburetor, mechancial distributor with petronix module replacing points, hedman shorty headers.
Engine starts without a problem, Cannot get it to idle, vacuum reading around 15 steady at 1800 rpm, dies when put into gear.
Had degreeing done at professional shop and preload set according to standards.
Is there a vacuum leak or a tuning problem with carburetor?
Need your thoughts.