So I have this 1951 5-window 3100 and I put a used 327 V-8 in it, been running ok since last year, but always hard to start.

Last week, I finally got the wiring done enough that it was legal to drive on the street. Took it for a few quick trips. Almost home, the engine died suddenly. Turns out the HEI distributor had failed, I bought a new one, swapped it out a few days ago and was back up and running again.

Today, went to start the truck, it sputtered a couple times when I first cranked it over, but didn't start. This has been typical, usually I put a little starter fluid or some gas down the carb, and it fires with a roar! Not this time. I checked for spark with a spark testing tool and a timing light. Gas in the line and gas poured into the carb. When I timed it with the new distributor I had it right on the mark at 8 degrees BTDC. I haven't checked it again but I can visually see that the distributor hasn't moved physically. I don't have a compression tester but planning to buy one. I figure the compression must be at least okay, it's been running well in the past. Also pulled the #1 spark plug, it had some carbon but not bad, I cleaned it up and put it back in. It was dry.

So I know, for a motor to run:

Fuel
Air
Spark
Ignition Timing
Compression

I'm looking for out-of-the-box ideas because I have covered the basics and can't get it to fire up.