Went out today to the mulch yard and took pictures to prove I use the truck
I need to remove the foam off the front bumper, but I'm still walking on it while I "fine tune" a couple things under the hood.
I also took note of speed and RPMs to determine what the gear ratio is in the rear axle. At 40 MPH I was turning 2250 RPM (4th gear 1:1). The tires are 40 inches tall so that calculates to the 6.40/8.72 combo. I found a Mitchell overdrive unit (18%) that I'm going to stick in the driveline so I can (hopefully) get first gear back. According to my fuzzy math the Mitchell unit should effectively give me a 5.24/7.15 combo. I should then be turning 2800 RPM at 65 MPH in 4th gear. The transmission is a 5 speed (.77 overdrive) so that should further reduce RPMs to 2150 at 65 MPH. I think that would be a very comfortable ride.
Am I doing my math right?
https://plus.google.com/photos/115050180406101428512/albums/6015901219714536369
