after transplant, rebuilt 351m, had vac. issues. driverside v/c has pvc wich goes to rear of holley carb. pass.side v/c just has plastic 90,it used to go to old breather-now wide open. vac advance is hooked up properly. trans vac is not hooked up. a tee on manifold for now ,put caps on them. motor runs well but has hesitation, ithink carb adjustment nessesary. have 18 on vac gauge. im asuming timing is close at 10btc

 

Does this help you at all?

Catalyst & Vacuum Hose Information

 

pict. great but nothing origanal.where should other v/c vent be hooked or plug it. 1 v/c pvc go to carb. should trany vac be hooked to manifold?

 

This my opnion and what worked for me: I would plug the d/s VC or route it to the air cleaner if you don't have a oil cap breather with a hose to the air cleaner, run the p/s pcv valve to the pcv valve port on the front of the carb as well as the the transmission modulator line (should be two ports on the bottom front of it). I would plug the back port on the carb. If you have a power booster, I hooked it to the rear manifold port if available. If not, the back of the carb.