i have a strong 350 tbi recently put holly on top and now i have a tapping on right hand side of the motor when i accelerate idle,nothing.i use an stock electronic distributer wich i want to replace with a vaccum advance from a early model and scrap the electronic(can i do that)anyway i feel like its my camshaft thats about to give up on me but i still have the same power as i did before the tapping my timings all messed up and the tapping is scaring me should i break it down and rebuild or go with the cam lifters pushrod thing

 

do you have a Carb on right now, non-computer controlled and still have a computer controlled distributor, if so you are prob. getting spark knock under accel, but i would think you would notice a lack of power on accel.

 

carb is electric choke holly and disrtibuter is electronic with the center wire going to the modual

 

If the timing's messed up, it's probably just be spark knock. When I started my most recent motor for the first time, I had all kinds of spark knock (bad timing mark on dampr) and it didn't effect power much at all. Try pulling some timing out of it. About 10* initial advance for a factory-like engine is all you really need.