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Is it stock? Pics of truck, truck engine, and undercarriage?I bought a 1971 fj40 with a 4 speed. At 50-55mph it sounds like it is wound up. 1st gear maxes out at about 2 mph. I'm not into rock climbing. What can I do to increase the upper end speed without spending a fortune?
H2Is it in high range?
If what you describe isn't exaggerated, it sounds like it's stuck in low range. Have you tried shifting the transfercase at all? How did it compare? Is this the first fj40 you've driven? Looks
I'll try lo and Hi tomorrow and report back...If what you describe isn't exaggerated, it sounds like it's stuck in low range. Have you tried shifting the transfercase at all? How did it compare? Is this the first fj40 you've driven? Looks south American.
You didn't state what tire size is so I used 29".
"
AI Overview
To calculate your engine RPM with a 4.11 gear ratio and 29-inch tall tires, use the standard formula: RPM = MPH X Gear Ratio X 336 divided by Tire Diameter
Cruising RPM Examples (1:1 Direct Drive Transmission Gear)
- 55 MPH: ~2,693 RPM
- 60 MPH: ~2,938 RPM
- 65 MPH: ~3,183 RPM
- 70 MPH: ~3,428 RPM"
Front tires look smaller than rear tires in pic. All the same size?