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1st Gen Chevy/GMC S-Series Extended Cab Longbed


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#21 Casey

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Posted 05 October 2013 - 08:55 PM

I got around to enlarging the rear quarter windows, but I may have made the driver's side opening a tad bit too large:

 

S10106131.jpg

 

S1010613.jpg

 

 

I also figured out a good way to get out of sanding the bed floor seams... :huh: :

 

S10106132.jpg

 

 

:D  ;) I've almost got them finished and ready for another coat of primer, so they should be close to done. I need to do more research as to how the x-cab frame differs from the standard cab and where it is extended, stretch the interior tub, make some rear interior panels and jump seats, and clean up/remove some of the molded in details on the inner wheel wells.



#22 jeffs396

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Posted 06 October 2013 - 05:21 AM

Looks good so far!

 

Are you gonna share your in-between-the-reinforcing-rib sanding method??? ;)  



#23 Casey

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Posted 06 October 2013 - 06:44 AM

Are you gonna share your in-between-the-reinforcing-rib sanding method??? ;)  

 

Sure-- 320 grit wet sanding paper, folded.  :D  I try to make the joints as neat and tight as possible, and use as little plastic welder as possible, so two or three rounds of sanding and priming usually do the trick. Nothing fancy but tedious detail work to be honest.



#24 Casey

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Posted 07 October 2013 - 08:46 AM

I got the frame rails extended and boxed in yesterday, but I still need to lengthen them a bit behind the rear wheels. I also extended the cab floor and removed the molded in battery and washer reservoir from the right inner fender. I removed the gas tank brace, spare tire holder, and block sanded the frame rails, too. I think I'll stay 4x2 on this one, despite the simplified one piece front suspension and steering. I'll see what I can do to improve that area.  -_-

 

s10fram310713.jpg

 

s10frame310713.jpg

 

s10frame210713.jpg

 



#25 Casey

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Posted 07 October 2013 - 06:44 PM

Quick mock-up of the cab, firewall, partial interior, frame and inner bed:

 

cabnbed10713.jpg

 

 

I also smoothed the LH inner wheel well, removing the molded in ABS module(?) and another reservoir, so I have holes to plug on both sides now.   -_-

 

Closer (and still crummy) low-light shot of the rear frame kick-up area, where the top of the frame touches the bottom of the inner bed. I had to take a thin wedge out of each frame rail, reposition them a bit higher so the frame rail flats and bed bottom were parallel, then plug and weld the joint. Luckily I had a second frame on hand, from which I got the correct frame rail height, so it wasn't too difficult to correct.

 

framebed210713.jpg



#26 Casey

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Posted 07 October 2013 - 06:52 PM

Is this the one you were going to do a 4cyl too?

 

I was thinking about using a 4 cylinder in a standard cab shortbox S-10. I think I'm going to stick with the stock 4.3L V6 for this build, as it's very nicely detailed and I don't want to go too crazy with modifications. I will be swapping in a T5 5-speed manual, though.  :)



#27 RodneyBad

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Posted 07 October 2013 - 07:47 PM

I'm no S-10 Expert

But...

 

 

Great looking Conversion work on the Bed, Frame and Cab..



#28 Casey

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Posted 08 October 2013 - 10:17 AM



I'm no S-10 Expert

 

Me neither....hope that isn't too obvious.  :unsure:  :D

 

I wanted to keep the momentum going, so I tackled the interior tub, extending it with the rear third of a second standard cab tub. It wasn't too complicated, just lots of test fitting with the frame/floorboard, cab, firewall, and interior tub all together. Once the correct length was set I mated the two tub pieces, then filled in the two floor holes. I'm not sure what the boxy looking thing in the right rear corner is on a standard cab, but I'm pretty sure it needs to be removed so the x-cab's passenger side jump seat can fold down, so one more hole to fill.  -_-  I wanted to retain the rear tub wall-to-cab rear wall fit, so it was easier and simpler to use another box stock tub section than to craft new pieces out of sheet styrene.

 

Final test fit shot, making sure the top rear of the tub fits under the rear window opening correctly:

 

s10inttubtestfit10713.jpg

 

 

Almost done, with the first two floor filler pieces in place:

 

s10interiortub110813.jpg

 

 

Hmmmm, should I partially cover the floor with the jump seats or create interior panels with them in the folded up position...

 

s10jumpseatarea10813.jpg



#29 Skydime

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Posted 08 October 2013 - 06:47 PM

Great work Casey.  Personally, I would do the jump seats up.  I do have a question though.  Are you thinking of doing a lowered suspension at all?  I ask for two reasons.  First, your front fender wells.  No sense filling the driver side if you have wheels, tires, and suspension that are going to require removing them and/or replacing them with scratch built versions anyway.  Second, you might want to hold off on finishing that rear interior floor.  Severely dropped S10/S15/Sonoma extended cabs are notorious for the driveline hitting the back of the cab floor in an extended cab. This issue may translate into a model kit as well.   I know you were talking about possibly modifying the front suspension from the one piece.  So, you might want to take these factors into consideration.  If lowering is not a factor, maybe this will help someone else considering this modification.  Keep rockin' this one out!


Edited by Skydime, 08 October 2013 - 06:52 PM.


#30 Casey

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Posted 08 October 2013 - 07:19 PM

I think I will leave the jump seat in the folded up position, Ken.

 

I did some tire test fitting this afternoon and the front fender wells will definitely need to be reworked, or I need to use a smaller diameter tire. I think the 20s I tried out were a bit too tall anyway, but you're right-- there's not much room for tucking the tires up front.

 

I don't think I'll go too low on the suspension, and looking at the two-part driveshafts on 1:1 extended cab models, I'm probably going to have to use some type of custom/faux factory driveshaft setup with the longbed in place. My main concern with the front suspension is that the lower A-arms appear to be hanging in thin air, and the upper A-arms look nothing like the real things, either. I think going 4x4 would and even more complications, though the Syclone's AWD setup could be kind of interesting....no, no, no, 2WD it's staying.

Thanks for the tips and comments, folks.  :)



#31 mikemodeler

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Posted 09 October 2013 - 12:40 AM

coming along nicely Casey! I think if you were to offer this in stock configuration with the ability to drop it for those that wanted to you would have more interest in this.

 

The box in the right corner of the interior is where the jack and lug wrench was stored on these trucks- I know because I owned three of them! The last two (88 & 91 standard cabs) I removed the jack so I could locate stereo components in the tight space in the cab.



#32 Casey

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Posted 10 October 2013 - 10:07 AM



coming along nicely Casey! I think if you were to offer this in stock configuration with the ability to drop it for those that wanted to you would have more interest in this.

 

 

I'm not making any major changes, just (what I consider) minor improvements and eliminating some of the simplifications, like the molded in engine compartment details. I actually want to finish this.  :lol:  :D

 

I got the inner fender well holes plugged, and ended up using the front third of the driver's side inner fender to patch in the non-existent front third on the passenger's side. Rotated 90 degrees, it was a decent fit, so some sanding and filling will be necessary, but it saved me a bunch of complex work in a tight area. I still need to add a patch piece or two at the forward bottom edge, though:

 

engcomp10813.jpg

 

 

I also extended the rear frame rails .252" using the rear section of chassis #2, so the new and existing frame section were joined with a simple butt joint, reinforced using some rectangular styrene rod inside the frame rail pockets. Plastic welder to the rescue yet again:

 

frameext210813.jpg

 

frameext10813.jpg



#33 DrKerry

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Posted 12 October 2013 - 06:19 PM

If you get this cast I'd get one for sure..... I had a GMC S-15 dropped 5 inches with a 355 small block up front!!!!



#34 Casey

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Posted 12 October 2013 - 07:10 PM

I added a few details to the floorpan under the cab, including two additional mounts removed from the second chassis:

 

cabmounts101113.jpg

 

 

I also started extending the rear inner quarter panel pieces, again using sections of the second kit's panels for the extension. I'm planning to sand the extended areas flat, then add the jump seat detail once the panels are one solid piece:

 

doorpanels101113.jpg

 

 

Lastly, I did a bit more work on the left leaf spring and shackles, scribing a separation line between the spring eye and the shackles, rounding their edges a bit, and basically making them look a little less like one molded piece. I will add two miniature bolts to retain the leaf spring to the shackles and the shackles to the frame rail.:

 

leafspring101113.jpg

 

 

 



#35 DrKerry

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Posted 13 October 2013 - 03:43 AM

kool beans



#36 Wheels

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Posted 13 October 2013 - 09:53 AM

Very cool!



#37 Casey

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Posted 13 October 2013 - 03:23 PM

The quarter window openings needed to be reshaped and the lower edge raised, so I welded in a styrene strip on both sides of the cab, then started refining the openings. The driver's side look very close, but I think the top edge on the passenger's side is a bit too high, so I need to add a filler strip and reshape the entire opening in a few areas.

 

1013133.jpg

 

1013135.jpg

 

1013131.jpg

 

1013136.jpg



#38 Jonathan

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Posted 23 October 2013 - 10:00 AM

This is beautiful work!  Are you planning to cast this?  The reason I ask is that my Dad had an S-10 just like this for years.  He still talks about how he should have kept it.  (4.3 with just over 300k miles on it - that was not a typo)

 

Anywho...I tried my hand at marrying two Monogram S-10 cabs together, but my results were nowhere near as nice as what you'd doing here.  So - plans to make this beauty available to us lesser folks?  :wub:

 

Keep up the great work - this thing is a beaut!



#39 DrKerry

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Posted 23 October 2013 - 10:55 AM

Lookin good Casey!!!!!



#40 440 Dakota

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Posted 23 October 2013 - 12:22 PM

awesome work,love S-10s and have owned a couple dozen and actually thought about doing this conversion except in 4x4 form,if by some chance you have these cast i would buy a few beds,cabs and tubs


Edited by 440 Dakota, 23 October 2013 - 12:23 PM.