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351C Will Not Fire

My 351C is in a test stand after its rebuild. It got new bearings, rings, cam kit (cam, lifters, springs, timing chain and gears), oil pump, a valve job, etc. It also has a new(er) Holley 750. I spot checked compression on cylinders 1 and 8 and they measured about 155 PSI. Oil pressure is reading 80 PSI on the mechanical gauge. Ignition timing is set at 4 degrees BTC (instead of 10) to make the initial startup a little easier. Float bowls on the Holley are adjusted for the test stand.

The engine will not start. My best guess is that ignition timing is incorrect. It is reading 4 degrees BTC with the timing light. Using starting fluid, it is firing, but the timing seems greatly advanced as the starter strains against the combustion.

The engine ran fairly well before the rebuild. It produced some blue smoke at startup. I found that many of the cam lobes had been rounded off, probably from running oil without ZDDP (zinc). All in all, it ran pretty well for a nearly 40 year old motor.

What do you guys think I should focus? Your suggestions are appreciated.

Thanks, Steve

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