serious problems

[redrocket95]

alright guys so here the story, about a month ago i drove me car at night not even abusing it but i never drive slow. the next morning the car wouldn't start... it gave the code P0340 which is camshaft sensor bank-A malfunction. when i tried starting the car the first few times i gave it gas, rpm's came up, and made a knocking noise.
took the head off, all 8 air intake valves were bent. i put on another 1g head, brand new. started the car, was running lean, white smoke coming out the tail pipe, switched the plugs and wires, started the car and after like % mins of running it began leaking anti-freeze. one of the hoses by the flue filter was ripped so we fixed that. started up the car again and it would start, tried again, it started and in 5 secs shut off. there was no spark coming threw the coil but the coil was receiving the spark, switched the coil, same story.

my baby has been in the shop for nearly 3 weeks now and im getting depressed slowly :/... if anyone can help me it would b much appreciated.

 

[2GFWDbeast]

so your saying the car will crank over, but wont start??

 

[redrocket95]

Noo it starts but in like about 5 seconds maybe more less it shuts down. But its wierd cause like it does that a couple of times and then starts up and runs normal and i shut it down and it does the same thing wehn I start. It up again