10l80 10 speed transmission into square body suburban.

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Vbb199

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89 Suburban R1500, 79 C10
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350, 502
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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Price for motor + trans, no controller

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Warthog44

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Arkansas
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Clint
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1989
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Suburban 1500
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383
Price for motor + trans, no controller

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1750

I’m in Arkansas can u come look before picking it up?


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Vbb199

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350, 502
Excellent.




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In all seriousness, I'll have to do a little thinking on it.
Long haul for a motor and transmission

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Warthog44

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In all seriousness, I'll have to do a little thinking on it.
Long haul for a motor and transmission

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Too far. My company can ship it. I am Repops auto restoration parts.

I’m sure it would be 3-400 though. You want me to get a quote?


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Vbb199

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Not yet

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nujac

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bruce
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You are my new hero. I have been wondering if the MPG gains are more of a factor of a transmission with more gears that just a new type engine. Thanks in advance for charting new waters.
 

Peter Tremonti

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I always wondered about stuffing anything with more than 4 speeds into a square. Take lots of pictures. This could be very interesting.
 

Warthog44

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Suburban 1500
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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?
Progress

Well it turns out I got the 8speed transmission. It was an Aligners mistake on the part of the seller and I got a good enough deal I just went with it. Went with the new rtx gauges and did the front pulley system from dirty dingo.

The swap of the trains get case was great. The adapter plate worked great. Should start it sometime this week.
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Warthog44

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Clint
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1989
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Suburban 1500
Engine Size
383
It started! Still need to adjust the transfer case shifter and will test drive tomorrow. These L86’s are LOUD without exhaust. Nothing like compression.

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Catbox

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I am sure you have test driven it by now.
How is it going?
Did you pick up any MPG?
 

Warthog44

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Arkansas
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Clint
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1989
Truck Model
Suburban 1500
Engine Size
383
I am sure you have test driven it by now.
How is it going?
Did you pick up any MPG?
Driven around 1500 miles. Looks like I’m getting around 16mpg average. 22 highway. That’s up from 7.5 before. It really is nice. The power of the 6.2 on the lighter vehicle.... amazing.


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Warthog44

Junior Member
Joined
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Posts
22
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44
Location
Arkansas
First Name
Clint
Truck Year
1989
Truck Model
Suburban 1500
Engine Size
383
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?
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Quick update.... 4500 miles on the new drivetrain. I couldn’t be happier. It ran great after the normal teething problems but oddly at about 3k miles it came “alive”. I ran 0-60 in 5.1 seconds. Pretty good for this big pig. But the inevitable happened to the rear end.


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