Ok, a little background first, this is what I am working with:
327 punched .030 over 11:1 .194 heads
750 double pumper holley
accel ignition sysem (box)
cam is .324 duration and .530 lift
**major rebuild on the motor 20 years ago, and was running fine until last late last fall. It is now running rough, it has a miss that I can't pin down. No response...no power. It run's but not very well. It will get from point a to point b but it is running sour. It doesn't overheat either. I am coming to the forum because I have tried the following things without success:
1. new plugs and wires (old plugs looked in good shape)
2. new cap and rotor
3. had the carb checked out
4. compression test on all cylinders. all tested 150-160
5. pulled valve covers and checked to see if the rockers were making a full sweep (no missing lobes on cam) checked out ok.
6. new fuel filter
7. checked all wires and connections
**there seems to be air coming back out through the carb when it's running and you go to give it fuel. Almost like it is expelling air instead of sucking in fuel. any ideas?