No start

I recently bought a 1991 LX 5.0 that was stock minus a cam and exhaust. It ran fine minus a few exhaust leaks.

I just finished installing a set of ported Windsor Jr heads, GT40 intakes, 75 mm throttle body and matching MAF and also some new 24lb injectors. I also installed roller rockers and the correct length push rods. I replaced all sensors, vacuum lines, spark plugs and wires as well.

When I went to start it for the first time, it just spins and has 0 compression on the number 1 cylinder.

Does anyone have any idea why this would be?

AeroCoupe said:

Recheck your rocker arm adjustment to make sure you dont have a valve staying open. After that you need to do a leak down test.

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Thanks, it was the rocker arms adjusted wrong.