running a 4l80e behind a duramax

[PROLSXSS]

hi there how hard is it to run a 4l80e behind a duramax where iam i have readily available 4l80e's and am doing a conversion and was wondering if i could run the box behind my LLY and how hard it would be to wire it up so the standard ECM runes it any help would be greatly appreciated

 

[GRNASTY]

i wouldnt sugest it ... its a hard core trans but these motors make sooo much torque.... but then agin everone says a 2004r is a pos i got a buil one that will take 1k hp...all billet stuff.... just remember it cost to be the boss!:thumb:

400 or powerglide is so much esier to made bullet proof.... coming from a gas drag racer.... my trailblazer has a 4l70E i think its stock but ive seen them explode like a bomb .. its only been 13.55 with stock tires on stock 20's

 

[PROLSXSS]

thanks man i have built alot of 4l80e's strong with billet gear in them im just after the Overdrive as it is a street car

 

[GRNASTY]

how much hp ? 200r4 is ideal street od tran when built buy a pro... I had a backyard built 2004r last 5 yrs with 450 hp 1.55 60fts daily driven in a 3,770lb car with me in it... after it broke only a sprag .. not the builders faught i got a full billet internal trans .. it would wrinkle 275/50/15 mt street DR's

 

[GRNASTY]

your fine if its a street car i thought u wanted to put it behind a dmax ... ive only seen one grand national with a dmax an he didnt say what trans

 

[PROLSXSS]

iv made 1000rwhp but on gas cars with 4l80e iv built but the duramax i will have around 450rwhp but alot of torque

 

[GRNASTY]

2004r has a better gear ratio

 

[PROLSXSS]

hi yes it will be behind a dmax

 

[lts1ow]

i wouldnt sugest it ... its a hard core trans but these motors make sooo much torque.... but then agin everone says a 2004r is a pos i got a buil one that will take 1k hp...all billet stuff.... just remember it cost to be the boss!:thumb:

400 or powerglide is so much esier to made bullet proof.... coming from a gas drag racer.... my trailblazer has a 4l70E i think its stock but ive seen them explode like a bomb .. its only been 13.55 with stock tires on stock 20's

80e is a 400 with OD AFAIK.

Jakes rates em at some pretty high tq ratings
http://jakesperformance.com/4L80E.html

Hell, even my stage 2 is ~750hp rated.

 

[PROLSXSS]

i know they are a th400 with overdrive infront of them iv built like 10-15 of them for friends and my self

 

[Mike L.]

It will work fine if you don't push 4th gear hard. I built a 4L85 for a black Gran National with a Duramax.

 

[TheBac]

your fine if its a street car i thought u wanted to put it behind a dmax ... ive only seen one grand national with a dmax an he didnt say what trans

It will work fine if you don't push 4th gear hard. I built a 4L85 for a black Gran National with a Duramax.

You two may be talking about the same car. Diesel 5's, correct?

 

[Kartmnn]

What do the vans use? I know the dmax is detuned but..

 

[PROLSXSS]

It will work fine if you don't push 4th gear hard. I built a 4L85 for a black Gran National with a Duramax.

thanks mike. L any upgrades you would do to it to make it live with some bigger tunes and also who converter should i use

 

[JoshH]

I run a 4L80E in the race van. It's the factory combo with the Duramax in the vans. I had some less than stellar results with my "professional" big name builder, but I'm hoping I have better results this year. Since it is the factory setup, I can't provide any input on the conversion, but the only hard parts that were upgraded are the billet input and main shaft and a billet forward clutch hub.

 

[GRNASTY]

You two may be talking about the same car. Diesel 5's, correct?

not sure but he posted pics on turbobuick.com an its the only GN ive seen with a DMAX btw all GN's are black an all 89 TTA's are white only color u could get them in.

 

[Mike L.]

It was Diesel 5's.

 

[lotsofmiles]

Everybody wants van stuff.

I had a van when vans weren't cool.

 

[PROLSXSS]

I run a 4L80E in the race van. It's the factory combo with the Duramax in the vans. I had some less than stellar results with my "professional" big name builder, but I'm hoping I have better results this year. Since it is the factory setup, I can't provide any input on the conversion, but the only hard parts that were upgraded are the billet input and main shaft and a billet forward clutch hub.

what tunes are you running in the van and do you know of any van wiring harnesses around at all?

 

[JoshH]

what tunes are you running in the van and do you know of any van wiring harnesses around at all?

I do all my own tuning. I don't know of any extra wiring harnesses, but if you check around on different auction websites (IAA, Copart, or the like) you can find wrecked diesel vans for a pretty good price.