Its been awhile and I am kind of confused as to how exactly the carb works. The adjustment screws are in the rear metering block instead of the front and I think they work by letting more air into the mix instead of gas, you can hear more air going through the air bleads when you open them, if I close them all the way the truck idles fine but with no air when you give it gas nothing happens, the more I open them the rougher the idle but it takes the gas normal. The carb appears to burn somewhat rich which I don't understand because it came off a 292 C1TE truck motor that I have with the steel crank and now on a 370.

2.) There are 2 fittings on the carb, one just goes to the air filter chamber, probably for PCV. the other goes to the primary vacuum diaphram to hold the butterflies closed if remember correctly.

does anybody have any Idea exactly how these carbs are supposed to work, where I shold plum the vacuums etc.

Thanks in advance for any info.

Will this carb work on a later model engine or does it need the original distributor?

My experience with old big trucks is limited, but I believe you have a carb intended to be used with a governor.  The spring loaded throttle lever was what jogged my memory, then the two vacuum line to the distributor deal cleared a little more fog.  Seems I once locked the spring loaded throttle lever on one so the guy could put a non-governor distributor on his engine.

John

This carb with original distributor on my 272 with cluch out and stomping on it had unbelievable torque and response up to the governed point. (3800 I was told) it would either start smoking the tires or slipping the clutch. if only I could change the governing to 5500 or something.

I still do not understand the adjustments being in the secondary metering plate, and the linkage actually does not move the primary throttle plates unless the vacuum is hooked up correctly or if I turn the adjustments all the way in it shuts off a vacuum so when you give it the gas nothing happens, it just sits there and idles.

I just can't seem to get the vacuum correct without the original distributor and the other thing is when the engine is warmed up I can get it so it is acting fine sometimes, but after sitting for the night and starting it cold, it appears to be all out of whack again.

I would think it should work good, a truck carb on a truck engine and being an 82 F600 there is no smog garbage on the engine.

Any Ideas???