How much power over stock can my trans handle?

[2004F250XLT]

With what upgrades should i start worrying about getting the tranny built? I am considering getting head studs and full delete, srl + tune, and s&b intake all soon. But after what extent should i worry about my transmission? Also does anybody know whats so great about the alison trannies in the dmax's?

[pizza pig]

550 is what a good healthy stock 5r110 can handle... say when adding injectors/turbo is when i'd think of doing anything to the trans. Some people have put almost 600 through a stock trans with no issues for a while.

the allison SUCKS stock PERIOD. They're okay when fully built...

[windrunner408]

The number I keep hearing when you approach/exceed 500rwhp, you need to plan on getting a built tranny. Now this of course is all going to depend on how you drive your truck. If you rag on it pretty hard (i.e. drive it like you stole it), then I would not expect it to last too long.

From everything I have read, the allisons are not that great other than they have 6 speeds. They need help at 450hp.

If you want my opinion, I would suggest putting in a gogo direct solenoid to raise your line pressure, keeping your clutch packs from slipping.

[2004F250XLT]

ive never dyno'ed my truck before but around how much power should i be expecting with just a good tune, exhaust, and intake? close to 5? im definitely not getting rid of my turbo, its so loud! and i can build decent boost off the line right now.

[windrunner408]

400 give or take some depending on the tune. IDPs x-race puts out about 420ish, Matt's SRL does about 390-400. If you are on the canned SCT performance tune, then probably in the 370-380 neighborhood. JMO.

[pizza pig]

Originally Posted by windrunner408

The number I keep hearing when you approach/exceed 500rwhp, you need to plan on getting a built tranny. Now this of course is all going to depend on how you drive your truck. If you rag on it pretty hard (i.e. drive it like you stole it), then I would not expect it to last too long.

From everything I have read, the allisons are not that great other than they have 6 speeds. They need help at 450hp.

If you want my opinion, I would suggest putting in a gogo direct solenoid to raise your line pressure, keeping your clutch packs from slipping.

01-05 are 5 speeds 06+ are 6 speeds... the 5 speeds need more help than the 6 speeds do

gogo solenoid will help for sure. if you plan to keep the stock turbo and injectors dont expect anything over 430 at the wheels... at that power the trans is just fine.

[Term3]

Weird, my factory manuals for my '05 list six speeds

[Dirty_Stroke]

He was talking about Allison's being 5 speed up until 05 and 6 speed after. I agree with Pizza Pig, allisons are pure JUNK unless they are FULLY built... But at the point of being fully built pretty much any tranny will hold together decent lol

[Term3]

Ahh duh me.... Can't read that well again.

[2004F250XLT]

if the allison is junk i wonder how the dodge 47re ranks lol