new cam,,, runs like crap !

[jitteryguy]

I plan on a road trip in the Dually when I go home on R&R, It's been need'n lifters since I bought it and I bought a cam kit right befor I left ,,, so I had a neighbor install the cam and lifter's,,,,,,,,,,,,,,,,,,,,,,,,
first thing to go wrong was the fan explode'd while he was set'n the time'n ! took out the water pump and the new radiator I had just install'd.
second thing (minor) was the vacum line on the modulator broke, it would'nt shift on the first test drive.
Now, the vacum line, fan, water pump and radiator have been replaced , it starts right up but when ya rev the engine it pops back thru the throttle body ?
the neighbor and my girlfreind have replaced the plugs, cap, rotor, plug wires, readjust'd the valves ?
she sent me a video of it be'n start'd the first time and it was run'n good till the fan explode'd. he's check'd every thing I can think of, ya'll got any idea's ?
it's a Comp Energy cam, 260 duration-440 lift.