I drove the 80 or so miles up to try a cold start and look it over one more time. First thing I did was pop the hood and feel the exhaust manifolds and around the block- still ice cold! Good. Turn the key- the glow plug light comes on and holds for about 7 seconds. I cranked it and it popped, but no fire. Key back off- then on; glow plug light cycles on and off quickly. I crank it again, again she tries, but no dice.
Seller tells me to give it a little gas as I crank- third time she fires right up! Idles good. Not much coming out the tailpipe- just the normal steam looking stuff.
We check that all the lights work, wipers, sprays, it all checks out good. The VIN matches the title.
I decided to take the chance; I really want the GVO for my '57 anyways. So I paid the lady and she is now mine!!
On the drive home my wife followed me and we investigated the speedometer error via cell phone. At 2000 rpm the truck is running 71 mph with the overdrive engaged. Does this sound about right? Without the overdrive engaged the motor seems to be roaring at any speed above 55 mph. Is it possible that the rear end has 4.56 gears or something??
I stopped and filled both tanks- took 17 gallons, so I know I got some free fuel! I drove home on the rear tank running 70-80 mph most of the way. The gas gauge dropped like a rock!!
WTH?? It worried me enough that I pulled into a gas station near my house to fill it and see how terrible the gas mileage was.
It only took 4.2 gallons.
The fuel level sender must be "heavily biased". I googled the mileage from the fuel stop at about 65 miles, so that is about 15.5 mpg. Not too bad for a dually crew cab in a 40 mph crosswind.
Will see what the morning brings. I have her plugged in for tonight, but I will have to get it started with no block heater a few times in my travels tomorrow. Thanks for all your help and advice.
P.S. I only got on it real hard one time- it pulled all the way to 13lbs of boost. I really don't want to blow a head gasket so I need to stay out of it for now and figure out where this "magic fuel screw" I've heard so much about is located. The pyro ran at 650 degrees for most of the steady hwy run home. Is this about right?
Thanks again!