I HAVE A QUESTION ABOUT MY 70 CHALLENGER
 

My question is this, I have a 1970 Dodge Challenger with a 318 engine. I have a Edelbrock performer intake with a manual choke 4-barrel Edelbrock carb. model #1405.
Does anyone know what the timing specs would be for this set-up. I need the idle spec. The timing spec. And I need to know if the vacuum diaphram is supposed to have constant vacuum or vacuum only at open throttle. PLEASE REPLY.....ANYONE

RE: I HAVE A QUESTION ABOUT MY 70 CHALLENGER
 

The timing would be the same as factory specs,If the cam is stock. Is the car automatic trans or straight drive. Is the distributor a stock item with a vac diaphram or an after market type electronic or dual point. For the street, I prefer a vac diaphram, electronic. You can look up the factory specs on the internet. The carb and intake do not change the timing specs, though I do think you could add some timing with good gas. Also the timing is added as you accelarate, then retarded as you reach high RPM. The vac advance is used at idle. You could add some lighter springs inside the dist for a quicker advance. But I think if you go after market, they already have an aggressive advance.

RE: I HAVE A QUESTION ABOUT MY 70 CHALLENGER
 

I want to say its around 13 degree BTDC, and your idle should be at about 800 rpm or so.
Later
KFD