69 383 Performance

In order to run really hard, there are certain things that need to be done. 383s run well, for what you get. But you don't get much - not even what they were supposed to get.

If you can get some compresion readings, and if you have a buddy with a dial indicator, se about pulling the rockers and taking some lift readings directly off the lifter body. You can get an idea of what you have that way.

Carbs have no idea what they're on, nor does the engine know what is feeding it. The only common denominator is getting yours properly tuned. I'd wager it's off. What about your timing curve/setup? Have you looked at that?

You only need to spend time at this point.