Constant Miss-Fire

[LTZ C20]

Ok, that makes more sense, so how far are the weights supposed to fold out when I do it by hand? Also, if the timing chain is stretched then it won't let the cam be in time with the crank so wouldn't the valves be moving slightly off from when they should? Causing a miss right? The engine is running almost perfectly, it's got that miss on accel from stop and hard accel from cruising. If the cam lobes are flat wouldn't it miss all the time?

[454Man]

Not unless the valves were too tight... Your case is diff. But it is worth the check.

[LTZ C20]

Ok guys I've gone over everything and I've done a timing chain variation check, I haven't pulled the valve covers. I'm gonna drop it off with a guy my friend knows, guy like you guys, a new set of eyes to just start fresh and check it out. This guy worked on my buddies truck since his dad bought his 79 gmc back in 83. Guess we'll see what happens. In just tired of struggling with this stupid motor. Haha