Rear wheels are sucked in way more than front. K10. Adapters? BAD IDEA? pics inside

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Keith Seymore

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I feel like I should share this at some point:

I've been accused of making it sound like I was "everywhere all at once" back then and I don't want it to give that impression.


I've been thinking about writing a thread about "How I got so Smart", or something like that, but in a nutshell: it's "sneaking".

After 40 years at GM (45 in the industry now); across about a dozen different GM assembly plants (Flint, Pontiac, Ft Wayne, St Louis, Janesville, Oshawa, Fremont, Arlington, Silao, Wentzville, Mishawaka, Hamtramck come to mind), three or four pre-production shops and one skunk works (that I can't talk about) there's a lot of opportunities for an inquisitive guy to ask questions.

Even before I started my engineering curriculum at Flint I had a stint in Personnel. One of my jobs was to deliver the mail. As a result, one learns not only where all the "monuments" are in the plant, but three or four ways to get there: front ways, back ways, sneaky ways, etc.

While you are sneaking around you are getting to know folks and learning about their jobs, and learning about the process, by osmosis.

Even after that, as an "adult" when I would go to these various other plants for new model launch, I would ask my plant host to show me around ("...show me where you put the VINs on", or "...show me the paint body bank", or "take me out to paint repair") to further my understanding for use as a historian. They were happy to show off their place and I was genuinely interested (that is, I was not being manipulative to curry favor).

Being the engineering rep on the Program Team (2nd gen Denali and Escalade, 2003 product refresh, H2, Volt) gets you exposure to some high level people across the various functions (Purchasing, Quality, program mgmt, containerization, logistics) and how decisions get made.

Or - I would sneak around myself. I remember the first time I went to Wentzville they pretty much got me through the door and said "ok - we'll see you in a week". I had been there for about 10 minutes before they cut me loose to fend for myself, so - after finding where I was going to be working - I spent the rest of my time watching trucks get built and wandering around.

There is no shortage of things in a vehicle assembly plant to capture your imagination, if you are a car guy.

K
 
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bucket

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I know the guy.

Ed Pauly was the suspension engineer for the squarebody trucks.

We lived in the same small town during our time on the program, so we had a lot of nice visits.

I'm not speculating. If I was I would say so, but a lot of squarebody history I don't have to speculate on (like the roof running lights a few threads ago).

K

Here's the thing about doing different generations of vehicles:

When the current version came out it was billed as the greatest thing since sliced bread.

So any change you make as a manufacturer has to be "better" than before. And then better again. And then better yet again. At best - It's unsustainable.

Think about fuel tank locations as an example. The squarebody had the tank outside the fuel rail, which was frowned upon when the GMT400 came out with the tank inside the frame rails.

Be reminded that the previous truck, though (67-72) had the tank inside the pickup cab.

K

I'm still saying that cost was the biggest reason... you know how those engineer types are.

Lol, you know I'm just teasing you I hope. I'll just always be highly skeptical, you know, since the 'better traction' reason also is the FAR cheaper option for a manufacturer, and every cent makes a big difference in the end.
 

yevgenievich

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Gmt400 kept narrow rear track as well. And gm had opposing advertising claiming different track width better traction
 

mtbadbob

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Here's the thing about doing different generations of vehicles:

When the current version came out it was billed as the greatest thing since sliced bread.

So any change you make as a manufacturer has to be "better" than before. And then better again. And then better yet again. At best - It's unsustainable. And it's subject to the whims of the program team and what is "en vogue" at the time.

Think about fuel tank locations as an example. The squarebody had the tank outside the fuel rail, which was frowned upon in hindsight when the GMT400 came out with the tank inside the frame rails.

Be reminded that the previous truck, though (67-72) had the tank inside the pickup cab.

K
Wasn't the reason the GMT400 moved the fuel tanks inside the rails because of the BS lawsuit the kids parent's hit GM with because their son got t-boned at 55 mph & his Squarebody truck exploded??
 

mtbadbob

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Gmt400 kept narrow rear track as well. And gm had opposing advertising claiming different track width better traction
Yeah, and I'll say this about the GMT400 indy front axles. Dodge & Ford boys argue that GM's indy's don't get as good as traction as their trucks. I've been slayin' elk & retrieving them out of deep snow & steep mountains for 30 years, using my '89. All I can say is bring your $ you WANT to lose, I'll have the Hi-Lift, chains, & a tow strap to help you get back to safety! I've driven by so many of those trucks in 4 lo, 3rd gear that it had to be embarrassing for them. Everybody around here knows that when it gets REALLY WINTER on top of that mountain, 'ole blue is always 1 or 2 of the rig's that'll make it up top! The other guy drives a 90's lifted Tahoe w/34" Swampers. The diesel boys just stay home because they know their heavy tanks are worthless in those conditions. 1989 Chevy 2500, 350 TBI w/4 speed Granny Tranny. Original trans & rear-end. Odo stopped working in 2001 at 165k+ miles. Replaced clutch 10+ years ago. SORRY to hi-jack this thread, fella's!
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bucket

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Gmt400 kept narrow rear track as well. And gm had opposing advertising claiming different track width better traction

It was narrower than the front, yes. But not to the extreme of the squarebody trucks. The 4x4s got a wider housing than the 2wd trucks.
 

Blackbeard44

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whats the proper adapter thickness to correct this?
 

Nasty-LSX

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Yeah, and I'll say this about the GMT400 indy front axles. Dodge & Ford boys argue that GM's indy's don't get as good as traction as their trucks. I've been slayin' elk & retrieving them out of deep snow & steep mountains for 30 years, using my '89. All I can say is bring your $ you WANT to lose, I'll have the Hi-Lift, chains, & a tow strap to help you get back to safety! I've driven by so many of those trucks in 4 lo, 3rd gear that it had to be embarrassing for them. Everybody around here knows that when it gets REALLY WINTER on top of that mountain, 'ole blue is always 1 or 2 of the rig's that'll make it up top! The other guy drives a 90's lifted Tahoe w/34" Swampers. The diesel boys just stay home because they know their heavy tanks are worthless in those conditions. 1989 Chevy 2500, 350 TBI w/4 speed Granny Tranny. Original trans & rear-end. Odo stopped working in 2001 at 165k+ miles. Replaced clutch 10+ years ago. SORRY to hi-jack this thread, fella's!
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BAD A$$!!
 

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whats the proper adapter thickness to correct this?
I hate wheel spacers myself, and has anyone determined that'll make your truck drive/handle any better??
 
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Nasty-LSX

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whats the proper adapter thickness to correct this?
Im guessing a 1 1/2 in adapter. I ask Redfish on post #4 here what size he has. Maybe he will reply :happy160:
 

Redfish

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Im guessing a 1 1/2 in adapter. I ask Redfish on post #4 here what size he has. Maybe he will reply :happy160:
I cannot remember and I am not avoiding you... well, I am procrastinating.

I hate to make our Northern Members jealous but I have been cutting grass all day. Yes, I have been on the d***ed lawn mower most of the day. Then I had to grill fish and vegetables for Mrs. Redfish's supper.
 

Nasty-LSX

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I cannot remember and I am not avoiding you...
Never thought that :happy160: and I dont expect you to pull the wheel LOL. Sure does make your truck look perfect. I
will figure it out and post it here.
 

Redfish

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Never thought that :happy160: and I dont expect you to pull the wheel LOL. Sure does make your truck look perfect. I
will figure it out and post it here.
Okay, the width difference is 3.1". You need 1.5" spacers.

I tried to measure mine but it cannot be done without pulling the wheel off. But it is 1.5", I am sure of it.

This pic was taken as part of this discussion in an older thread on this forum.


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