Allison upgrade question?

Vmyrhaug

2003 lb7sac45 35" 20x12 fjallasport flares
Mar 6, 2016
177
6
18
41
Norway
Truck is 2003 year silverado with allison and lb7.
have notice rough between 3-4 and slipping under heavy load.
and the converter have too high stall speed.
trans is orgin. low milage.
engine is tuned.

I'm going to doo the trans overhaul myself. have done a couple of 4l80e in the past and some bigger trans in cat equipment.

i've have a transgo shift kit, but som question about what will be the best parts too put in?

1. converter, i've looked att the BD low stall triple disk. is that a good one?
is there anything better out there with more torque transfer att low rpm?

2 clutch packs, i've been looking at PPe stage 4 and 5. or is there some better solution out there? tharget is 550whp and so much tourqe as possible without changing bigger thing on the engine.

3. Mike L spring. i want the line sping and also the trim springs. but cannot find anybody who can ship it too norway! some help here have been greatful.

4. is there any else i should do with my trans? i want a bulletproof trans for daily driving, towing and a little drag race:)


If i've lived in usa, i've run the truck too mike l, but it's a freeking long way from norway too usa!
and the trans builder in this country ain't good enough:-( they all about earning money.....

so help with the best product for my truck will be greatful:)

sorry for my bad english, hope u guys undersand me:)
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,692
1,971
113
Mid Michigan
Give Evan @ Limitless (a vendor here) a PM. He can set you up with everything you need and he doesnt seem to have any issues with shipping items. ;)
 

Stancedlb7

Cummin Stroke this Duramax
Feb 9, 2015
649
0
0
SLC, UTAH
I personally wouldn't run ppe 4. They run 8 C2 clutches wich will be super annoying. The stage 5 are great clutches for your power level. But I'd add on some C3 clutch coolers. Check out DHD not sure if they can ship to you though.
 

minerigger

Active member
Dec 24, 2013
2,660
1
38
Casper, WY
As Tom mentioned pm evan from limitless diesel. He can blow your mind with some good knowledge on what to you do and don't need and what will be best for you

Sent from my SM-G900V using Tapatalk
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,692
1,971
113
Mid Michigan
As Tom mentioned pm evan from limitless diesel. He can blow your mind with some good knowledge on what to you do and don't need and what will be best for you

This is exactly right. A good vendor doesnt try to sell you something you do not need, but helps you with parts when they see you WILL need them. Its crucial to know what your end goals and truck uses are before you call/email/PM a vendor, too.
 

Vmyrhaug

2003 lb7sac45 35" 20x12 fjallasport flares
Mar 6, 2016
177
6
18
41
Norway
Thank you very much guys:) i've sent Evan a pm now:)

i hope someone can ship too Norway:)

i can find some of the parts on ebay, but like the Mike L trans springs i can't find anybody who ships it here.

and also need advise for the best combo in my trans.
 

Vmyrhaug

2003 lb7sac45 35" 20x12 fjallasport flares
Mar 6, 2016
177
6
18
41
Norway
Anybody with experience with the AFE F3 1200rpm stall converter???
 

TheBac

Why do I keep doing this?
Staff member
Apr 19, 2008
15,692
1,971
113
Mid Michigan
Hope you guys didn't miss the OP is from Norway

And welcome
Nope, didnt. It wont be cheap no matter who he buys from, though.

Thank you very much guys:) i've sent Evan a pm now:)

i hope someone can ship too Norway:)

i can find some of the parts on ebay, but like the Mike L trans springs i can't find anybody who ships it here.

and also need advise for the best combo in my trans.
Then wait for Evan to reply. He will not steer you wrong.
 

Vmyrhaug

2003 lb7sac45 35" 20x12 fjallasport flares
Mar 6, 2016
177
6
18
41
Norway
Cheaper would be all at once... Sounds like that's not really an option for you though

i've had att least buy the TC by itselves...
not cheap thoose things.

and thats why im looking too buy the right one.

the same with upgraded clutch's. the rigth/best one for my use.

ain't cheap too make te engine perform either... it will be spending alot of cash on the truck in the future:)
 

56taskforce

Well-known member
Mar 30, 2014
1,081
56
48
I will just say hi and some day i would love to see Norway. as anything I have to say has already been covered.
I was born and raised here in the USA but my last name is Ensrud. :D
 

Vmyrhaug

2003 lb7sac45 35" 20x12 fjallasport flares
Mar 6, 2016
177
6
18
41
Norway
Anybody who would recommend a converter? Looking for low stall speed and huge torque transfer at low rpm. Stock turbo. Engine will be tuned with efi live.