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One Piece at a Time: My 1985 Diesel Suburban

AgDieseler

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One Piece at a Time: My 1985 Diesel Suburban

View attachment 230753 This is my first car.

My father bought the Suburban new in 1985, and I spent many weekends at his elbow as he serviced and maintained the truck. It provided no shortage of opportunities - a leaking lift pump, a few alternators and water pumps, a two piece rear main seal that was designed to leak, and a passenger door that never shut right would eat its door post bushings. My dad enjoys caring for a vehicle as a sort of active meditation. I recall him referring to a car as, "the simplest relationship you'll ever have."
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I was fourteen when he set the truck aside for me. While that may seem a bit premature, it wasn't any mystery what I wanted for a first car. I made my wishes known early, very early - on the way home from the dealership with my dad when he took delivery of the Suburban, and reminders evenly scattered through my childhood years: road trips, camp outs and drives around the block where I would steer while he worked the pedals. Such would be a hallmark of my persistent nature. With the exception of a momentary flirtation with a '69 Dodge Charger R/T - it was red with a cream tail stripe and a black vinyl top and still had the original 440 and 727 - it was always the Suburban. That Charger was a neighborhood car and we passed it regularly in the way one drives by derelict driveway-bound cars that are in the opposite direction from wherever you're going. At some point, I floated the idea of the Dodge to my dad, but that conversation ended quickly and with a finality that I knew we wouldn't discuss it again. It would be another twenty years before I could live out that dream.

Back to the truck; to which GM had applied one of its best worst paint jobs. They called it Indigo Blue, though after a few short years it began to look more like enameled leprosy. I think they said it was a defective primer. In true 1980s GM fashion, they refused to make it right and my dad wasn't about to get it repainted. By the time I was driving it in high school, there were patches of contrasting repair paint and primer all over. It was ugly, and I loved it. The rhythm and smell of the 6.2L diesel, and the feeling of driving a truck that (I thought at the time) could do anything and go anywhere....

Read more about this build here...
 
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Nice Sub! Good story too! :thumb:

Your pictures look cool... kind of blurry background makes it look almost fake!
 
youve got an awesome rig man, i'm truly envious of that transfer case setup! that's really cool that it's been with you its whole life.

how do you like the detroit in the front axle? i want a front locker.
 
Thanks for the kind words.

In a quest for simplicity, I chose the Detroit. It's economical, always performs, and matches well the type of trails I run - no reforming of sheet metal, take your time with this 7000# girl, you gotta drive home. That said, it is not without it's drawbacks.

I sometimes shift to neutral to ease steering when the front output is engaged, though with hydraulic assist it's not much of an issue. Where the locker pushes you around (understeer) is in the maneuvering immediately prior to and in between obstacles; a time when the front output is usually disengaged and steering is just like in a mall parking lot. Maybe I've just adapted my driving style to the Detroit, but I'm a fan.

If I were building this axle again today, I'd probably think harder about an ARB. They are pretty slick.

David
 
Thanks for the kind words.

In a quest for simplicity, I chose the Detroit. It's economical, always performs, and matches well the type of trails I run - no reforming of sheet metal, take your time with this 7000# girl, you gotta drive home. That said, it is not without it's drawbacks.

I sometimes shift to neutral to ease steering when the front output is engaged, though with hydraulic assist it's not much of an issue. Where the locker pushes you around (understeer) is in the maneuvering immediately prior to and in between obstacles; a time when the front output is usually disengaged and steering is just like in a mall parking lot. Maybe I've just adapted my driving style to the Detroit, but I'm a fan.

If I were building this axle again today, I'd probably think harder about an ARB. They are pretty slick.

David

I agree with all of the above. I also have Detroit locked tons and would consider the ARB next time. I have a triple sticked 203/205 ready to drop in, but as it is right now, not having the option of 2L is a minor annoyance with a front Detroit.
 
The shop is going through a major reorganization as I prepare for another build; a process that is about preserving as much as parting with what is excess.

Thought I'd share this one: the original build sheet from 1985.
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Good to know the foam seat cushion was standard.

David
 
Big day for the shop tomorrow. I finally got an air compressor...can't borrow the old man's forever.

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David
 
Losing my odometer after the 4L80E conversion was annoying. Part if the joy of an old truck is tracking mileage, and I was at 373,000 when I cut the speedo cable. Since that time, I've kept a GPS log of my mileage and I'm close to 385,000 now. Before 400k comes along, I need to get a real speedo/odo set back in place.

Dakota Digital was willing to reface the tach on their direct fit gauge set to a 4k range. I will now patiently wait 6 to 8 weeks to install.

http://www.dakotadigital.com/PDF/VHX-73C-PU.PDF
 
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Sweet burb and cool story behind it! It’s a really neat deal to have an heirloom family vehicle that has been in the family since day one.

Curious on the rear axle though as the spec's list a 14 bolt full floater but the picture clearly shows a 9.5” 14 bolt semi-floater. Is this what you are still running?
 
That's a shaved 14FF...now more like a 13FF.
 
I'm fine tuning the rear suspension since the ORD spring packs have settled a bit - 1" add-a-leaf and rebuilding my lower shock mounts.
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I liked the mounting brackets from the newer Dodges, and made my own version from 2"x3" 1/4 wall tube. I'll add some small reinforcements and index them so there's 7" of shock extension/compression from my Bilstein 5125s; about a 5* angle.
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Nice and beefy. I might redo my rear shock setup one day. Is that gonna weld to the axle tube?
 
Yes, direct attachment to the axle tube. Got one side indexed and burned in last night.

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David
 

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