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No harm was perceived. If I seemed curt, it wasn't my intention.... I was looking to help, not looking for help. Always good advice.... Where was I over analyzing? It isn't my engine that we are talking about. Mine has 150 hours on it, and behaves like new in all ways as far as I can tell...

It wouldn't. I was told that the speedometer gear would be changed on a deuce with 11x20 inch tires vs one with 9x20 inch tires. -Chuck

I gave up being young a long, long, time ago. I give respect where respect is due, but when the gray came to my hair, I stopped granting respect automatically. Besides, what have I said, or done that would lead you to conclude that I lack respect for the gentlemen I have been corresponding...

I couldn't say, the truck is really new to me. It was getting about 7.4MPG for the 1200 mile trip home with its K-Mart M109 shelter on the back, and about 3000lbs of payload. Most of the trip was between 45 and 50MPH as measured by my GPS. On level ground I could get it up to 55MPH, but hills...

Ok. As I said earlier, I have not measured them, so I can't know either way. They could have made the 9x20's and 11x20's the same diameter if they wanted to by a slight change in the profile. -Chuck

Thank you! I can't help but notice that the cross reference listing you provided doesn't include the M44 series in the listing for the lower ratio gear. An oversight no doubt. If one had the lower ratio speedometer gear, that raises the deuce's top indicated speed to just shy of 60MPH...

I am not an expert on the MF injection system in any way shape or form. I hope to be before I am done, but who is to say when that will be? If you can't get the RPM's up in 5th gear, the question that comes first to my mind is can you *ever* get the RPMS over 2100? Try it in neutral, and...

Ok, but that isn't as the manufacturer intended ;-) It makes no sense to compare your modified situation to a stock deuce. -Chuck

In 5th gear, with the transfer case in high, the ratio between RPM and MPH is: 2600RPM/56MPH = 46.43 RPM/MPH or 56MPH/2600RPM = 0.0215 MPH/RPM So 50MPH, is about 2300RPM. 2200RPM is about 47MPH, and 2500RPM is about 54MPH.... -Chuck

Come on guys, your speedometer and your tachometer are hard geared to each other! The relationship (ratio) between them is fixed by the gear shift and transfer case lever positions. Unless you have broken speedometers, and or tachometers, or have some custom gear ratios in your transmission...

After fuel filters, the surest and quickest killer of power is dragging brakes, and mismatched tires on the rear axles. If your air assist cylinder has a leak, it can apply braking pressure all of the time, which will be more than enough to pull your top speed down. If your tires are...