2004.5 performance upgrades

[TN farmer]

I am thinking of ordering a 04. 5 with the 48RE transmission and wanted to findout some answers to a few questions.



1. What hp can the auto transmission hold before needing upgrades?

2. What kind of hp can I make from a box without changing turbo or injectors?

3. Can I make it stronger than my chevy (dyno 375hp) from just a fueling enhancement?



I know the trucks aren't out yet but maybee someone can tell me what to expect from the transmission.

 

[thejeepdude]

Originally posted by TN farmer

I am thinking of ordering a 04. 5 with the 48RE transmission and wanted to findout some answers to a few questions.



1. What hp can the auto transmission hold before needing upgrades?

2. What kind of hp can I make from a box without changing turbo or injectors?

3. Can I make it stronger than my chevy (dyno 375hp) from just a fueling enhancement?



I know the trucks aren't out yet but maybee someone can tell me what to expect from the transmission.

I am hoping to get a 2004. 5 as well if my 99 will hurry up and sell. My plan is to use it stock 325/600 for the duration of the warranty and after that have DTT install their TC as well as massage the transmission over. By that time I'm SURE there will be plenty of boxes available that will put it over you're chevy's 375, but my plan will be to do whatever is neccessary to get it to the 450-500HP range. At this point that appears as if it might be possible by then with just a fuel/timing box and bigger turbo... time will tell.

 

[TN farmer]

Has anyone found the upper limits of the stock 48RE in terms of what hp it can handle?

 

[HoleshotHolset]

I have heard 400hp mentioned many times in reference to the maximum power the 48RE will handle until it eats itself... .



Matt

 

[RankRam]

Originally posted by HoleshotHolset

I have heard 400hp mentioned many times in reference to the maximum power the 48RE will handle until it eats itself... .



Matt

If thats the case then an EZ should be fine for the 48 then?

 

[HoleshotHolset]

Nobody can guarantee you anything, but I would say an EZ would be fine on a SO or 305hp HO along with the 48RE...



Matt

 

[KLockliear]

1. DTT says 400hp

2. 350rwhp with the stock turbo. More can be made with injectors, etc, but EGT's will be unmanageable.

3. "just fueling"? Fueling is everything. 500+rwhp

 

[HoleshotHolset]

Keith:



Will the '03-'04. 4 injectors work in the new '04. 5 325/600 engine?



Matt

 

[DocDetonancour]

Does anyone know how much HP the ez adds on the 305hp? Thanks, Doc

 

[KLockliear]

HH, don't know yet. Haven't seen an 04. 5.



Doc DeTon, 65hp/150ft-lbs to the wheels over the stock 280/495 at the wheels.

 

[HoleshotHolset]

Keith: Sorry, I jumped the gun... . I realized that you said in another thread that you guys haven't worked on a '04. 5 yet. My bad.



Looking at the '03+ service manual makes me cringe when I see all them expensive fuel parts.



Matt