Real Men of Genius
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Transmission Breaking Point
What's the breaking point for an all stock, non-modded, factory 5R110 - for someone that never tows? Meaning, how much RWHP can the stock tranny hold before it grenades?
I realize that this question is like asking, how many miles can I get out of an all stock 6.0 engine, but I'm just looking for an idea - a ballpark estimate. I'm pushing 500rwhp, and I've got a few more things that I want to do, and I plan on the transmission going out on me eventually, but how much of my paycheck should I be delegating to a "Transmission Fund"? All of it? Half of it? None of it? etc...
This truck is my daily driver, and I leave it in Matt's SRL+ (possibly switching that up to Chris's SPD) tune all the time. I treat the truck well, not gunning around town except maybe once a week to blow all the crap out. I'm right at 102,500 miles on my truck, and as far as I know - it's the original transmission. I've got the GoGo Direct Clutch Solenoid, but it isn't installed yet.
I've heard that the transmission can hold up to 550rwhp before you have to start really putting your pennies aside for a built transmission. And if you're making over 600rwhp, then you're on borrowed time. Well, enough of the hearsay. What do ya'll know for a fact to be true?
For the guys that had their transmissions already crap out on you, how much RWHP were you making and/or what mods do/did you have done to your truck? Do you ever tow? and if so, how much do you tow? How often do you tow? What are your driving habits? How many miles were on it? Those kinds of things I think will help benefit everyone. And if this thread already exists somewhere... then it should've been made a sticky. Cause I looked for it.
Failed at 120k miles
Mods: Hyper-tech adjust on the fly programmer, 4" exhaust with muffler and kitty delete, and K&N CAI
Drive Style/Tow: Moderate, 8k pounds about 6-7 weekends a year
Fix: Suncoast rebuild, still going strong after 77k miles (truck is now approaching 200k)
Failed at 196k miles
Mods: ARP's and Ford HG's, New Y-pipe, Sinister coolant filter, Amsoil bypass, EGR delete, BPD oil cooler, WARN manual hubs, Dual Redtop's, SCT SF3 (running Vivian's Looney Wild tune, Matt's tow tune while towing) EDGE Insight w/EGT (soon fuel PSI & turbo timer), MBRP 5" no kitty or muff, Amsoil 5w-40, DieselKleen EVERY tank, CCV mod, 6.4 Banjos, AirDog 2, Warren 155's
Drive Style/Tow: Aggressive, 10k pounds about 5 times a year
Fix: Rebuilt by the "best" local transmission shop
2nd failure at 201k miles
Mods: FICM repair w/ Atlas 80 FICM tune from Bill at PHP, and swicthing the tune to Chris's SPD were the only differences between the 1st and 2nd failure
Fix: Fully built BTS Transmission
Failed at 145k miles
Mods: ARP's/ aux filter/ IDP tuned/ EGR delete/ S & B intake/ Full CFM+ kit/ Silverline stainless 4inch/ 58V FICM/ BPD water pump/ AD2 165/ XDP Sump/ Tons of bolt-ons/ F350 dually rear leafs
Drive Style/Tow: Aggressive, towed every day w/ IDP's X-Race
Fix: Suncoast trans w/ billet internals
Chris | 2005 F-250 RCSB
Last edited by Super Diesel; 06-13-2012 at 07:18 AM.