hello, I have just swapped to lt1 heads and intake and comp cams part# cca08-503-8 on my l98 and now my car won't start. When I turn the key the engine turns over fine I get good spark and fuel pressure. Can anyone help me I'm lost. Any suggestions on what I could check would be great. sensors? pcm?

 

start ts from square one, ok you have spark and fuel pressure but are the injectors pulsing? You need a noid light, they cost $3 bucks at auto zone, check by un-hooking each injector plug and plug it in and crank engine look for flashing light pulse. Is the distributer indexed right?

 

I unbolted the fuel rail with injectors attached and turned the key and all of them were pulsing hard.