Ford 4r100HD
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4th Gear
Joined: Mar 2023
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Ford 4r100HD
hello all, ive got a ford remaned 4r100HD and I've seen the other forum where it says whats all done to it but i haven't found anything about it being able to hold more power, id like to reach about 400 horse power and i was wondering if the ford 4r100HD is up to the challenge, if anyone knows anything let me know thank you!
Lead Driver
Joined: Mar 2006
Posts: 6,264
Likes: 438
From: IL
I understand the stock 4r100 can handle up to 1000hp, but I also hear the stock TC are prone to failure, so you might think about upgrading that. There are other people here that are trans experts that can tell you a whole lot more than I can.
Fleet Mechanic
Joined: Nov 2015
Posts: 1,487
Likes: 217
no way. That trans would be puking it’s guts out after 30 seconds behind 1000 Hp.
my uncle is a ford trans guy and he said the TCs are basically wear items. On mine at 150,000 he said the vanes were breaking up inside as he could hear them. He changed the TC and serviced the trans.
Lead Driver
Joined: Mar 2006
Posts: 6,264
Likes: 438
From: IL
Well there ya go...It's what I get for not thoroughly reading what was asked.....I meant to say 1000ft/lbs but instead said horse power. My apologies. Here's an article on building the 4R100, to supposedly take over 500HP, if you're interested. https://www.dieselworldmag.com/diese...04R100%20build.
I will be tearing into mine pretty soon as it is intermittently dying when I shift to reverse, Fluid was changed less than 5k ago and it's full, so There's probably something going on internally.
I will be tearing into mine pretty soon as it is intermittently dying when I shift to reverse, Fluid was changed less than 5k ago and it's full, so There's probably something going on internally.
Fleet Mechanic
Joined: Nov 2015
Posts: 1,487
Likes: 217
Well there ya go...It's what I get for not thoroughly reading what was asked.....I meant to say 1000ft/lbs but instead said horse power. My apologies. Here's an article on building the 4R100, to supposedly take over 500HP, if you're interested. https://www.dieselworldmag.com/diese...04R100%20build.
I will be tearing into mine pretty soon as it is intermittently dying when I shift to reverse, Fluid was changed less than 5k ago and it's full, so There's probably something going on internally.
I will be tearing into mine pretty soon as it is intermittently dying when I shift to reverse, Fluid was changed less than 5k ago and it's full, so There's probably something going on internally.
My question would be how reliable is the transmission and what’s the longevity of the rebuild. There are a lot of wild claims online as to “our product is the best “. Personally when I’m buying a big ticket item like a trans or reman engine I’m ninja research the quality longevity and if that company actually stands behind its product or is it lip service. There are too many fly by night operations who entice buyers with low prices or “ this o week only” weekly sale carrot on a stick.
Lead Driver
Joined: Mar 2006
Posts: 6,264
Likes: 438
From: IL
My question would be how reliable is the transmission and what’s the longevity of the rebuild. There are a lot of wild claims online as to “our product is the best “. Personally when I’m buying a big ticket item like a trans or reman engine I’m ninja research the quality longevity and if that company actually stands behind its product or is it lip service.
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Fleet Mechanic
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these days is awful
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From: IL
That's the problem with global economy, you never know the quality or where it's coming from.
Lead Driver
Joined: Mar 2006
Posts: 6,264
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From: IL
I can attest to that, picked up a Motorcraft headlight switch a few years back, and the plugin is slightly deformed so when you hit a bump the plug shakes loose just enough to turn off the cluster panel lights. I had to slide some folded paper in between to get it to stay.
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