How many miles can a 68RFE transmission go?
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Chrysler 68RFE Transmission Ratios & Quick Specs
| Transmission: | 68RFE six speed automatic |
|---|---|
| Strength: | N/A – Chrysler strength designation “8” on scale of 1 to 9 |
| PTO: | None |
| Service Intervals: | Recommended fluid and filter replacement at 120,000 miles under normal service conditions, 60,000 miles under severe service conditions |
What transmission can replace a 68RFE?
“The 4R is not only a faster shifting unit, but it is also much more durable.” Clint was also quick to point out that while the transmission package was designed to replace the 68RFE, it can be used behind any 6.7L or 5.9L Cummins, which makes it perfect for swaps, rat rods, or muscle cars with diesel engines.
Can 68RFE be reliable?
Overview of the 68RFE: Despite all of the impending doom the 68RFE and it’s abysmal valve body bring forth, it is a powerfully reliable transmission after being properly built. But, in stock form, it cannot hold much more than factory power.
How many speeds is a 68RFE?
six-speed
The first improvement Chrysler wanted to make over the Torqueflite platform was, obviously, the amount of forward gear. For the 68RFE transmission, Chrysler opted to change to a six-speed unit. The additional gears allowed Chrysler to add higher 1st-gear ratios and tighter shift recovery from one gear to the next.
Why does the 68RFE fail?
The most common failure point of the 68RFE is the Overdrive clutches. The OD clutch assembly from OE has significant weak points, even at stock power levels. Add increased engine power, larger tires or a heavy load, and there is a very high probability this will be the first failure of the 68RFE.
Will a Allison Transmission bolt to a 6.7 Cummins?
The new ATS castings allow the Allison to transmission to bolt directly up to the Cummins engine with out any engine modifications.
How much torque can a 68RFE handle?
1,000 lb-ft
With quality transmission control module (TCM) tuning, the stock 68RFE can support 500rwhp and 1,000 lb-ft or more, but it won’t survive boosted, four-wheel drive launches for very long—and maybe not even once if the Low/Reverse sprag explodes (which is common).
Is Aisin better than 68RFE?
In stock form the Aisin is slightly better than the 68RFE but when you start adding power neither one of them hold up very well and both are expesnive to build, the Aisin being even more expensive than the 68RFE.