Wheels & Rims

[Already Gone]

Originally Posted by engineer_gregh

You have a Highlander truck! If you're not familiar with the Highlander special promotion package do a search on this forum as there is a wealth of information available. That's a very nicely equipped truck. My best guess would be a 3.07 open rear end with a Turbo 350 transmission as the SPID would normally denote anything different on the rear end ratio. If you put 275/60/15 tires on you will be at ~2500 rpm's at 65 mph. Check out these two links.

http://spicerparts.com/calculators/e...rpm-calculator
https://tiresize.com/height-chart/

Her is a link to the Highlander thread. Nice color on your truck but I'm little biased as mine is the same color.

http://67-72chevytrucks.com/vboard/s...23#post7879423