Thread: 351 Questions
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Old March 9th, 2017, 11:55 PM
5Tractorguy 5Tractorguy is offline
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Default 351 Questions

Howdy folks, new to the forum here.

I have a couple questions regarding the 351 v6 in my '61 5000 flat bed and was hoping I can get some answers here. It's a low millage (20,XXX) ex tanker truck.

To start, I've been having trouble with the engine in terms of power. Going up a moderate incline at 35mph unloaded, I'm either to the floor or have to downshift. Doesn't seem like there is any gumption in it when you step on the pedal... no "pull" I guess...

-The carburetor has been rebuilt once and cleaned out twice.
-I removed the Handi governor deal (no difference)
-Valves have been adjusted.
-New points, condenser, coil, plug wires, distributor cap and rotor, and spark plugs.
-I also pulled the camshaft cover to look at the lobes and everything seems okay, no unusual wear.
-Timed at 10deg.
-Compression was checked and is good. All close to 120psi
-I'm in the process of doing the intake manifold gaskets now.

I've been beating my head against the wall trying to figure out this power issue (and trying not to overthink it). Part of me thinks that the carburetor isn't correct and maybe it's starving the engine for fuel resulting in loss of power.
Running the numbers from my maintenance manual they don't match, whether it makes a difference....

Code #-
Book 23-120A / Carb 23-120

Bendix #-
Book 380972 / Carb 387272

Main metering jet
Book 0.057 / Carb has 56 stamped into the jet

Also heard of a Rochester 7045114 being used on a 351 too as another option.


Any help/thoughts would be greatly appreciated.

-Jake
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