What to set Fuel pressure at?

[$uperstang]

Currently I have my FP set at about 46, looks like I am running a little rich as white smoke is pouring out the tail pipes. I can't drive it now due to the cold but I am thinking of turning it down to about 40.

What do you guys think it should be at?

 

[jrichker]

Use the SOP meter...

Get one of your buddies to ride along with you. Find a level stretch of road where you can do some testing. Don't choose a speed range that will make you shift gears, the shift quality & speed will affect your results. Use 2nd or 3rd gear and do a run from 2000 RPM to 5800 RPM. Call out the RPM as it increases and have you buddy record it and the elapsed time. If you have one of those cheap digital watches like I do, a stop watch is built in. Start the fuel pressure at 36 PSI, vacuum off and make a run. Turn it up to 37 and make another. Be sure to reconnect the vacuum every time you set the pressure. Keep turning up the pressure and making runs until you notice a drop off in time. If your bud was careful to record the results, you'll have a nice chart to use to find the optimum pressure.

 

[matm347]

White smoke is water vapor, probably just the condensation in the exhaust but could also be an intake/head gasket leak if it's a bunch or if it keeps puffing well after warmup. A rich condition would be black smoke. Check your plugs after a WOT run (don't let it idle if at all possible). They should be a tanish brown.
45psi for that setup on 24#ers is about right. Make sure your TPS is correct.