willysjeepseller wrote. . . but the rocker arm fell off a pushrod.
Sounds like a NOT professional rebuild!! You want to explain how it "fell off"?
You said the 'lobes looked good' - assume you pulled the cam. Did you mic the lobes or just do a visual?
'Lifters looked good' - and you changed them with no change in the engine - mark that one off.
What all did these "professonals" do to the engine? deck and line bore? "True" the heads? Did you get the spec sheet for any work they did? If they weren't square on the machine if they decked or trued the heads, you may be a few .001 off in cylinder height or on the head (both a bad thing), then the push rod distances will be different.
Start with the the easy stuff;
Compression on the cylinders
Cap and rotor - decent shape?
Wires in the right order? I've gone backwards on the wires and thought the engine was going to jump off the mounts :oops:
On the more invasive side; check the pushrod lengths (and straightness)
And while you have the rockers off (to check the push rods :wink: ), check the valve spring heights. Would be a clue to different length valve stems.
If it gets down to it check the spring pressures - if they mixed old and new valve springs you have different hights and pressures - not good, but not terminal. I prefer doing this with the heads off and the valves removed, but . . .
Keep us up on what you find. Your helping others by sharing your woes. And making us scratch our heads #-o
