10l80 10 speed transmission into square body suburban.

Warthog44 · Nov 13, 2019

Anyone attempted this? Going to just go with stock tune in the tcm I guess. Got a 7500 mile L86 6.2 and found a kit to put 4L80 transfer case on this 10 speed. I know I’ll need new shafts. Wondering about mounting? Anyone else tried this?

bucket · Nov 13, 2019

You may be in uncharted territory. I hope you go for it!

Warthog44 · Nov 14, 2019

bucket said:
You may be in uncharted territory. I hope you go for it!

I was once told... “it’s great to be a pioneer.. except for all those arrows in the ass”

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Big Chip · Nov 16, 2019

If it doesn’t work out at least you still have a ***** van.

RoryH19 · Nov 16, 2019

I swapped my entire k5 drivetrain last year but definitely not a 10 speed.
6.0/4L65e/NP241c
Was able to use stock driveshafts.
I'd be interested in knowing what the transfer case and the spline counts they are.
Which T-case are you using? Also need to make sure you have a right hand drop unless you change the front axle.

Warthog44 · Nov 17, 2019

rohuie said:
I swapped my entire k5 drivetrain last year but definitely not a 10 speed.
6.0/4L65e/NP241c
Was able to use stock driveshafts.
I'd be interested in knowing what the transfer case and the spline counts they are.
Which T-case are you using? Also need to make sure you have a right hand drop unless you change the front axle.

A company called Advanced adapters makes a plate to join my 4l80 transfer case to the 10 speed. I don’t have it yet to confirm it works or not. However, I don’t see any way I will be able to use the drive shafts. Btw.. I have a 383 engine with a holly throttle body coupled with a pro charger supercharger to sell if anyone wants it. I will make a heck of a deal. I will have it on a pallet this week.

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Smlowery · Nov 18, 2019

What are you asking for that 383 setup?

Vbb199 · Nov 18, 2019

Warthog44 said:
A company called Advanced adapters makes a plate to join my 4l80 transfer case to the 10 speed. I don’t have it yet to confirm it works or not. However, I don’t see any way I will be able to use the drive shafts. Btw.. I have a 383 engine with a holly throttle body coupled with a pro charger supercharger to sell if anyone wants it. I will make a heck of a deal. I will have it on a pallet this week.

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how much are you needing for the charger 383?
miles/hours?
pump gas or higher?

Warthog44 · Nov 18, 2019

I bought it at an auction with this drivetrain 8 months ago. The information I have says its got 12000 miles with this driveline. It has edelbrock aluminum heads, Accel ignition, procharger supercharger system. I have to be honest and say that I was not impressed with the horsepower of the supercharger. I ran it without the charger...(rerouted a different belt) and I would estimate it may have taken off 40 horsepower. This motor also uses a quart of oil every 3k miles or so. But it doesnt smoke. I will let it go for a bargain at 1500.00. I will post some pics and a video of it running this afternoon

Vbb199 · Nov 18, 2019

Warthog44 said:
I bought it at an auction with this drivetrain 8 months ago. The information I have says its got 12000 miles with this driveline. It has edelbrock aluminum heads, Accel ignition, procharger supercharger system. I have to be honest and say that I was not impressed with the horsepower of the supercharger. I ran it without the charger...(rerouted a different belt) and I would estimate it may have taken off 40 horsepower. This motor also uses a quart of oil every 3k miles or so. But it doesnt smoke. I will let it go for a bargain at 1500.00. I will post some pics and a video of it running this afternoon

I'd be interested.

Any paperwork on who built it

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Warthog44 · Nov 18, 2019

Vbb199 said:
I'd be interested.

Any paperwork on who built it

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I’ve looked hard but I bought it from a widow and she didn’t know anything. I’m estimating it made around 380 horse and it should be 500. I took the supercharger off and it dropped probable 40 horses and still got the same 8 mpg. The strange thing is that it ran perfect both ways. So the ignition system is adjusting to the boost correctly. But I just think it needs a tune. I tried to find any info and couldn’t. I’m gonna drive this a lot so I was going to just go to the late model stuff and get the efficiency. I have videos of it running and pics in the truck. My phone number is (479) 234-1572. Text me a number and I will send you a YouTube link. Haven’t figured out how to do that on this board. Feel free to call if you want.

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Vbb199 · Nov 18, 2019

Warthog44 said:
I’ve looked hard but I bought it from a widow and she didn’t know anything. I’m estimating it made around 380 horse and it should be 500. I took the supercharger off and it dropped probable 40 horses and still got the same 8 mpg. The strange thing is that it ran perfect both ways. So the ignition system is adjusting to the boost correctly. But I just think it needs a tune. I tried to find any info and couldn’t. I’m gonna drive this a lot so I was going to just go to the late model stuff and get the efficiency. I have videos of it running and pics in the truck

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Wonder if it's getting just a little oil blow by from heat on the cylinders and shrinking the rings a little? Or someone's ran it real hard.

Suppose we'll find out.

Any idea what kind of boost it's putting to it?
And is it pump gas?
Seems like it's either a Low safe comp ratio, or it just needs a tune.

Because my thoughts are like yours, you'd think it would make more power
My primary interest is the pro charger and fuel injection to be honest.

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Warthog44 · Nov 18, 2019

Vbb199 said:
Wonder if it's getting some oil blow by from heat on the cylinders and shrinking the rings a little? Or someone's ran it real hard.

Suppose we'll find out.

Any idea what kind of boost it's putting to it?
And is it pump gas?
Seems like it's either a Low safe comp ratio, or it just needs a tune.

Because my thoughts are like yours, you'd think it would make more power
My primary interest is the pro charger and fuel injection to be honest.

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Definitely low compression. Runs great on crappy gas. If it was ring I would think it would smoke. It puffs a little at startup which makes me think it could be a lifter? You want the 4l80 transmission? And I don’t know the boost.

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Vbb199 · Nov 18, 2019

Warthog44 said:
Definitely low compression. You want the 4l80 transmission? And I don’t know the boost.

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Possibly.

What's the info on it?
12k miles as well?
Any internal upgrades to stay behind a charged motor?

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Warthog44 · Nov 18, 2019

Vbb199 said:
Possibly.

What's the info on it?
12k miles as well?
Any internal upgrades to stay behind a charged motor?

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12k as well since in this truck. Don’t know about history. Has a harder shift but that’s possibly in the program. I will also send the TCI controller for 500. I’m using the transfer case. You would have to find one.

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10l80 10 speed transmission into square body suburban.

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