RB Holley setup, Carb and Dizzy Tuning Help

[FC Zach]

Originally Posted by TS87FC3S

1984 12a think its street port but not sure, 465 cfm holley. header back single exhaust, upgraded coils. Where do the vaccum advances get vaccum from and do one or both need to be hooked up rb says trailing only but that sounds wrong. also how do i setup the carb correctly (tune it) and what timing should i be runing. Right now car wont ideal under 1500 and wont cold idle. Any help is greatly appreciated.

I dont hook up the vacuum advances, I set the timing at 5-6k RPM which is where the weights should be engaged and I'll have to get back to you on where I have them set at that RPM (my notes are in my car). As far as setting up the carb, I would first set the timing so it will idle. Once it can idle set the fuel pressure and floats. Then you can play with the Idle/Air mixture screws. I generally turn them clockwise (slowly) till you to hear the engine start to die and back them off a 1/4-1/2 turn. This should get you in the ballpark.