the stock trans can take the abuse just fine.. I know plenty of mustangs with 100k on the stock 4r70w and they arent driven lightly.

 

Well....I got my license in '74 - factory big block hipo cars hitting the used car market all over the place. I drove the sh*t out of more of them than I can count.
I know all about putting my foot to the floor and holding it there.
Things would break, blow up, turn to shrapnel.We would just fix it and go do it again.
Of course we could get a Turbo 400 or C6 rebuilt for $200, a posi rear end from the wreckers for $50. Good jobs, no bills - we didn't care.
The conclusion I've come to is that if you don't want to have to spend money on repairing things on your truck, don't drive it like you don't care if something blows up.
If money and downtime isn't an issue for you, then drive it like you stole it.
Just thought I'd pass that on is all.
Could we at least agree that if it wasn't being pounded through the gears at full throttle twice a month, there's a fair possibility that it wouldn't be broken now ?

 

The Mustangs that came with the 4R70W have the 3.8 and 4.6 engines (neither engine was really special until around '99ish) and by that point, there were factory upgrades made to it with the best 4R70W being from '03-'04.

Early model 4R70Ws needed upgrades as the early model E4ODs did. The OP's 4R70W is a '95 and the 4R70W came out in '93, so it stands to reason that upgrades are required.

 

If it was a stock unit behind a built engine, I would agree. But a purpose built transmission should take everything you can give it.

I'm comparing apples to oranges, but the Dodge Hellcats have an automatic transmission that holds up to 707hp and I'd be mighty upset if I owned one that had a slinky as a transmission lol.

 

Vouched

 

Well. The truck is done and ready to be picked up. My (new) builder called me and said that whoever built it last should probably stop rebuilding transmissions, like, forever.

1. The front pump was completely annihilated. He said he has never had to replace this part in a 4r70w, ever. 2. The previous builder used silicone to seal **** inside the transmission, which apparently you do not do, EVER. 3. There was enough metal in the valve body to like, melt it down and manufacture another valve body. And finally, 4, there were holes drilled in the valve body where he has never seen holes drilled before.

So now, I guess we can all agree that if I did not drive the truck at all but instead let it sit in the driveway, it wouldn't be broken.

 

Save that receipt and take the original re-builder to small claims court, you should easily get the amount you originally paid refunded if not the total cost of the new work (not total for both jobs) plus any towing costs associated with the second repair.

 

+1

 

Did you have your engine re tuned when you moved? Colorado's air is thinner, the whole high altitude thing.

When I moved here (from Sea Level), my car I came out with would stall out and not idle properly. I had to adjust the air mixture to make up for the lack of o2.

Also, people when they move here seem to not notice that the Gas is 84 Octane. Here and Wyoming are the only states that use it. It is because the lack of o2 in the air means a more incomplete combustion, making the higher octanes not a useful (other than the cleanliness of the Gas itself).

I dont think these things broke your transmission, but they can cause problems on engines, especially bigger ones. (I moved on a 4.0L, and it needed some solid tuning and adjusting, but my 1.4L car just stalled easily, and needed one fix)

 

I havent had it retuned but the altitude correction is on so it should be fine. Havent had any engine problems, just the expected loss of power associated with altitude in general. If anything it will just run a bit rich.

I noticed the ****ty octane gas as soon as I moved here. Unfortunately my truck is tuned for 91 octane.

I do plan on taking Fox Transmission to court though.