I need some ideas on what to look at to get the engine started. The car is a 1996 Impala with 40k miles. I installed a LT4 camshaft, ported iron heads, roller rocker arms, new timing chain, and optispark distributor. Now the engine cranks but won?t fire at all. I double checked the valve adjustment and the cylinders have 150psi compression (good!). The valves open and close in time with the #1 cylinder so I have the cam installed properly. I have a good spark on #1 cylinder that coincides with the compression stroke on #1. I have fuel pressure at the fuel rail. The injector wiring harness is firing the injector as indicated by a test light placed at the harness. The plug wires are all good and going to the right plug.
The only thing I can think of testing is to try and start the car and sniff at the throttle body for gas odor. (to ensure the injectors are actually squirting gas.) I will also double check to see if I have gas in the gas tank. (never assume anything!!!)
Any ideas are welcome.