47 Ford Flathead V8 surging in gear
 

Hey folks,

I think I finally licked all of the cooling issues for my flathead v8 in the old ford. I took her out for a drive and noticed a couple of things though:

When I am accelerating it feels like the car is "surging" in gear. As I rev a little higher it evens out, but I feel like I've gotta keep the revs pretty high or I lose power.

Any thoughts? Could this be a fuel pump thing? Timing issue?

When I let the car idle, or I rev the engine without being in gear I can't hear any misfires or anything. It just ticks along.

Re: 47 Ford Flathead V8 surging in gear
 

Could it be the clutch slipping?

Re: 47 Ford Flathead V8 surging in gear
 

Worth considering Kelly's clutch thought. I doubt it's related to the ignition system (plugs, wires or distributor) as it would show at high as well as lower PPM's. A fuel pump malfunction or gas contamination would tend to show itself at most and upper RPM's. So if it evens-out at high RPM likely something in the carburetor.

Re: 47 Ford Flathead V8 surging in gear
 

When you say, "surging" do you mean you actually pick up speed, or do you mean the engine revs higher, but no increase in speed?