Hi guys,



I'm working on a 1960 F100. The original I6 motor had a hole thru the block, but it came with a 272 from a T-bird that the owner claimed had been rebuilt but never installed. I installed the motor with a 3 speed & Holley 2 barrel (Model 2300 series).



However, the thing won't idle unless the choke is 80-90% out. Vacuum gauge indicates low pressure (normal vacuum when choke is on). I left vacuum advance disconnected (and covered up hole on carb) for testing. Power brake hose is also taped off. I did not see any other vacuum ports to plug. Possible that I missed one??



Compression is pretty low - about 100PSI across the board.



I put in brand new distributor, points, condenser, plug wires & plugs. Points gapped to .015". I put the timing at approx. 6 degrees advanced with timing light. Spark looks good.



I rebuilt the carb with a kit from Oreilly's. Idle nozzles are clear, and pump works good. I have tried the nozzles at varying positions from 1 turn to 3 turns. Float & fuel pump keeps fuel right at the sight hole level.



The coolant (water for now) looked a bit milky after the engine warmed up. Engine did not run for at least 5 years, so could have been from sitting. I did back flush the engine prior to installing a new repro radiator & hoses.





What else should I check??



Thanks!!!