Gear Vendors for Excursion V-10 4.30 rear
I have a 2001 Excursion with a V-10 and 4.30's. I tow a 33 foot high profile TT that has a gross weight of 9,000 pounds. I found a great tune, 5-star 87 performance, that made a big difference. I...
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Yes, that's how it works, except that it adds a gear in between every gear, not just between 3rd and OD. Look at the chart below from the GV website:
You effectively go from 4 gears to 8. I also like the electronics that they had added to interface to the factory PCM, so you can program the unit to lock out when in 4WD, lock out double OD when in tow/haul, etc.
What you really end up with is an 8-speed transmission by "splitting" 4 gears into 8. It keeps the truck in the power band since the gear ratios are closer together, so RPM doesn't drop as much between each shift.
So you start in 1st, then in lieu of the next shift, the GV unit engages to give you 1st with OD. When the trans shifts to 2nd, GV disengages and you have factory 2nd. Then GV engages again at a predetermined point to give you 2nd with OD, and so through the gears.
You effectively go from 4 gears to 8. I also like the electronics that they had added to interface to the factory PCM, so you can program the unit to lock out when in 4WD, lock out double OD when in tow/haul, etc.
What you really end up with is an 8-speed transmission by "splitting" 4 gears into 8. It keeps the truck in the power band since the gear ratios are closer together, so RPM doesn't drop as much between each shift.
So you start in 1st, then in lieu of the next shift, the GV unit engages to give you 1st with OD. When the trans shifts to 2nd, GV disengages and you have factory 2nd. Then GV engages again at a predetermined point to give you 2nd with OD, and so through the gears.
