Bought my first mopar 73’ Duster and the bottom of the air filter pan is black (right above the carb). Any tips on how the 4bbl should be adjusted

tonyp25 said
Alright, so I’ve made it to the timing portion of your list. First time doing this but I watched a bunch of videos and bought a nice digital timing light (that shows RPMs too).

Going to try it out tomorrow. From what I read on this forum it seems like for a stock 318 it’s right around 6-8 BTDC and then a high performance one would like 8-10 BTDC. Granted mine has the edelbrock manifold and 4bbl Holley so I’m not sure which to go with.

I also found a receipt for a mild cam but I’m not positive the receipt goes to this car. If it did have a mild cam any idea would BTDC would look like? Below is a picture of the cam paper and I added a link to what I believe is the comp cam.

COMP Cams 20-210-2 COMP Cams High Energy Camshafts | Summit Racing

View attachment 1716113332

Those timing numbers are a good starting point, but the engine may want something different. Often times they want a few degrees more. There are lots of posts in this forum about how to set the timing for best results. As has been said earlier, get your timing right before messing with the carb too much. Advancing the timing will cause the idle speed to increase, so you'll need to reduce that accordingly. You'll have fun with your Duster and as you learn how to "make it happy", you'll have a great sense of satisfaction.