4r70W vs 5 speed auto

[wpurple]

Can someone tell me how robust the 5 speed auto is compared to the 4 speed 4r70W for durability?

How well does the 5 speed hold up to towing? Tne newer X's are rated for about 500# more than the 5L 4R70W setup.

Tx

 

[boominXplorer]

considering alot of the newer v8 x's are already having tranny problems I personally think the 4r70 will do better

 

[410Fortune]

damn Ford trannies.

The 4R70W is the only friggin auto that ever came in an explorer that was GOOD.
Its a AOD basically,
Wide ratio gearset
computer controlled
AOD-E

They are VERY reliable, durable, and can take like 500 hp with some simple upgrades. Although I have only been driving around with mine for about 3000K miles (put one in my 88 BII) I tow a 19' boat with 33's and the 4r70w does not flinch, get hot, or start hunting gears..

It has no issue downshifting into 2 and holding it there to redline in order to climb the hill or pass or whatever. I love this transmission, I own 3 of them now.....