Quote Originally Posted by Itoldyouso
Trying to diagnose these things via keyboard is sort of like trying to do heart surgery over the phone..............there are so many variables and possibilities to consider. One thing that confuses me is you say you recently rebuilt the motor but that little is known about the internal components. If you rebuilt the motor you should be have intimate knowledge of each of the parts you mentioned. How do you "rebuild" a motor and not know those things?

You could have your crank/cam misaligned to start with, or it could be as simple as dropping the distributor in with the rotor pointing where it shouldn't be pointing. You could also have the plug wires crossed up, as mentioned.

I think you are being wise to take it to a mechanic, but even he is going to have fun because the assumption will be that the internal components are installed properly, when that might not be the case at all. I hope though that you just find out it is something simple.

Don
little is known about the internals cause i got a block crank cam and lifters from a Chevy 3/4 ton the same year as mine from a friends junk yard, but the truck is running now with good power but at high rpm when you let off the gas the engine dies, is this a carb problem? or something else? thank you for all the help so far everyone