C10/ C20 differences

[jocko]

Here's what I THINK I know... looking for the differences when going from a 1/2 to a 3/4 tonner (pls tell me what I'm missin):

6200-7500 GVWR
16 or 16.5" 8 lug wheels
Full float axle
Rear end 4.10 stock with option for 4.56 (??)

What else?

For those that have had both, how does the ride compare in the 3/4? Much rougher or about the same?

etc etc

appreciate your thoughts.

[litew8]

For pics of a 3/4 ton frame, check my build thread (first couple pages I think).
I outlined (in red) the differences compared to a 1/2 ton.

[71swb4x4]

Trailing arms (coil spring obviously) are beefier.

[jocko]

not 3/4-specific, but I have a real dumb question - on the standard 127" wheelbase - was only an 8 ft bed available, or did an 8.5 ft bed exist? Have seen references to both, and thought a Longhorn was a 133 wheelbase and also a 9 ft bed.

I know my assumptions are hosed up there somewhere - was there an 8.5 ft bed, or were they all 8.5 ft (except longhorn)?
Thanks for the replies.

[litew8]

133" - 127" = 6"

[jocko]

Those are wheelbase differences, I'm asking about bed length differences, available on 127" (or 133" if you want to chime in on it) wheelbase.

Maybe I should re-word the question.
What bed lengths (not wheelbase lengths) were available, and on which wheelbases were they available?

[jocko]

here's why I'm asking... See this thread http://67-72chevytrucks.com/vboard/s...d.php?t=522062

it mentions 8'6" bed and 9' bed.
Is the 8'6" bed the ONLY long bed size for a 127" wheelbase truck? i.e. I always (for some reason) thought the bed was 8'0" on a 127" wheelbase truck. And that a 133" wheelbase truck was for longhorn, (the added 6" inches you mentioned litew8)

Sorry I've worded my question so poorly!

EDIT: I'm A$$uming that there is no such thing as an 8'0" bed... but just trying to ge the #'s straight in my grape.

[litew8]

Longhorn is 6" longer than a LWB bed.


Shortbed wheelbase = 115"
Longbed wheelbase = 127"
Longhonr wheelbase = 133"

Notice in the link you posted, view the poll results, nearly nobody selected 9'.
I'm pretty sure it is 8' (LWB) and 8' 6" for Longhorn.

Tim commented a few posts down in that thread - something about "9' Stepside,but have various length beds (bodies)".
I don't know, maybe there are some 9 footer stepsides out there.

[litew8]

Longhorn 6" bed extension.

[SS Tim]

To be exact we have lots of beds, inside lengths per GM.
78", 6'6" fleetside & stepside c10 k10
98", 8'2" fleetside & stepside c10/c20 k10/k20
104", 8'8" fleetside c20/c30 (longhorn)
108", 9' stepside c30 only

[jocko]

Aha! So there IS an 8' (ok, almost, 8'2" bed) and there is also an 8'6" bed. So I'm not losing my mind.... whew.

Now, here's a dumb(er) question... I could swear I've seen 1 ton fleetsides that had no longhorn seam - so it seems to me that something's missing here. If a C20 Longhorn is an 8'6" bed (on a 127" wheelbase), how does an 8'6" bed fit on a 133" wheelbase? And/or, is there a seam on the 1 ton trucks and I just haven't noticed it?

Seems, or seams , it might be gouge to throw up a string of pictures of each configuration that could be cobbled together. My head is spinning! HA! this is great! Thnaks so much for the input Tim and litew8.

[litew8]

I don't know jocko!


Wheelbase
115 in (2,921 mm) (short box)
127 in (3,226 mm) (long box)
133 in (3,378 mm) (Longhorn)

Length
188.5 in (4,788 mm) (short box)
207.75 in (5,277 mm) (long box)
213.75 in (5,429 mm) (Longhorn Fleetside)
217.75 in (5,531 mm) (Longhorn Stepside)

[jocko]

hmmm... But a longhorn could be had on 127" wb (C20) or 133" wb (C30) wheelbase.... My head hurts.

[litew8]

How would that be possible? Where are you getting that - a longhorn can be on a 127" wheelbase?

[SS Tim]

Longhorns 133" wb 104", 8'8" inside bed length. Both C20 and C30 Longhorns were built on the same 1-ton 133" frame just sprung light or heavy and dana or eaton. There have been several C20s done up appearing as 8' dually fleetsides. In fact you could even buy C20 Chassis Cabs with the R05 dual wheel conversion with a 127" wb but it was still classifed as a 3/4.

[litew8]

Longhorns could only be with 133" wheelbase frames.

[jocko]

That clears it up for me - a C20 on a 133" wheelbase is the key

Litew8, I was (incorrectly) mentally linking a C20 with a 127" wheelbase (which it normally is) - and confusing it with the fact that you could have a C20 longhorn - which you can, but just on the 133" wheelbase chassis.

SOoooooo - the Longhorn was always 8.5" and on a 133" wheelbase chassis, regardless of whether it was a C20 or C30.

Ok, next brain teaser (sorry). What was the difference in the bed between a C30 longhorn and a plain jane non-longhorn C30? Or is there such a thing? Did all C30's have the seamed 6" bed extension?

Yikes!

[SS Tim]

If you really want a picture book I'll do one before I crash, but it will be late!

[SS Tim]

The C30 came in only two bed styles
the Longhorn (8'8" seamed extension fleetside bed)or 9' stepside

[jocko]

Originally Posted by SS Tim

If you really want a picture book I'll do one before I crash, but it will be late!

no, not necessary Tim, your last post explains the last piece of the puzzle for me. Thanks!

[jocko]

Originally Posted by SS Tim

The C30 came in only two bed styles
the Longhorn (8'8" seamed extension fleetside bed)or 9' stepside

Ok, now I'm stumped Tim... Is this truck (currently on ebay) perhaps mis-badged as a C30? It's a non-seam bed 8' bed, which after all the above I had convinced myself is mutually exclusive with a C30... Oh Lord I'm so confused

[Critter]

I don't think that is a true c30...for one thing it is a 4x4. That would make it a k30 which I'm pretty sure didn't exist in these body styles.

[Sicklajoie]

MAN, you ask a lot of questions!

[SS Tim]

Originally Posted by Sicklajoie

MAN, you ask a lot of questions!

Great! Now I have soda coming out my nose at a quarter to 1 in the morning. ROFLOL

[SS Tim]

Originally Posted by jocko

Ok, now I'm stumped Tim... Is this truck (currently on ebay) perhaps mis-badged as a C30? It's a non-seam bed 8' bed, which after all the above I had convinced myself is mutually exclusive with a C30... Oh Lord I'm so confused

Well you may be confused, but almost correct. Kinda like passing your first semester of Algebra.

Whatever this was, it is not a 133"wb thus not an original/intact C30. The frame looks like a K20 but frankly I'm not spending a huge amount of time dissectiong it. The only "Amazing" thing about this truck is the asking price and the complete lack of information, just fluff and stuff! Enough about the ad.

The bed is a 8'2" Fleetside seen on countless 127"wb Chevy/GMC trucks. A quick tell is the front pocket location and the factory seam that are present on a Longhorn C20s and C30s.
The front pocket of your example truck is in the front corner. On a Longhorn at 8'8" an extension added forward of the forward pocket. On the third picture the fact that the shorter existing long bedside was lengthened at the factory is clear.

You know if after all this you buy a SWB we might just have to sneak up and lengthen it for you! Camper mirrors as well! LOL

Really no matter what you choose I wish it to be an informed decision. So ask away.