Hey i know that a 71 bel-air isnt exactly a hot rod, but its been in my family for over 20 years and now its mine. however, because i inherited it, i had to drive it up to utah from california. long story short, i drove it up with no problems and the day before yesterday it left me stranded at work. the engine, (a 350) is equipped with an HEI Distributor and currently cranks but wont fire. this seems very strange to me as it was running fine about two hours before, then when   i got out of work, it didnt. I have already changed the module and the engine is timed correctly.( i mean cmon i drove the dang thing up from california). is there anything else that i can check or do to this? my last resort is to take it to a mechanic but i would like to do this myself. if anyone can help me with this i would greatly appreciate it.

-John