Luxury Coach Lifestyles - View Single Post - Difference between 4 & 5 speed Alllison Transmissions

The Newell · 01-24-2013, 10:23 PM

More gears normally allows a higher top gear and a lower low, while keeping plenty of mid-range flexibility. A four speed generally has two lower gears, necessary to get it moving from a dead stop or climb steep grades, and then two fairly high ones for city and highway. That tends to leave a fair performance gap between 2nd and 3rd.

Hope this helps,

Joseph

01-24-2013, 10:23 PM	#2
The Newell Senior Member Join Date: Dec 2005 Location: Southern California Posts: 1,018	More gears normally allows a higher top gear and a lower low, while keeping plenty of mid-range flexibility. A four speed generally has two lower gears, necessary to get it moving from a dead stop or climb steep grades, and then two fairly high ones for city and highway. That tends to leave a fair performance gap between 2nd and 3rd. Hope this helps, Joseph __________________ 1976 Newell Classic (Sold) Home Base: Riverside, CA If anyone needs my contact info private message me and I will send it to you. -Joseph-