Not finding it on the web. LWB, 250 cu in 6-banger and an SM420 granny 4-speed. Newly acquired. Doesn't seem to like full throttle under around 53mph, and on steep upgrades I was gearing down as early as 60 mph. I'm wondering: Are these things geared kinda tall, maybe for fuel economy? Or do I need a little more tuning? I really like the truck, and I want to be nice to it until the body rusts further away enough that I will dismantle it and repower my '51.
