New cam and alum heads

I just installed a new cam and alum heads on my 92 GM truck with a 5.7. Everything went back together excellently. My problem now is that the truck won't start. I have gone through all the checks ie dist position firing order ect. I have fuel and spark' but still will not fire. Cam is in the proper position, dst is in correct, firing order is correct. The only thing i did that is different now is I elliminated the EGR. Any thoughts will be appreciated.

Thanks

Make sure you don't have the distributor or rotor off 180 degrees. The rotor should point to #1 tower at tdc of the compression stroke. Pull the valve cover off and rotate the engine by hand (15/16" socket on alternator bolt will usually work, and is easier than reaching the crank pulley) while watching the rocker arms if necessary.

Thanks for the reply. Everything is good with the distributor position. Now I have a new problem, After charging the battery the injectors are not firing. I'am having the computer checked out.