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Old 11-26-2006, 05:18 PM   #15
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thanks Barry.. My other half does not quite get it, but the kid already buffed out the bumper and made it look great
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Old 11-26-2006, 06:36 PM   #16
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1993 21' Sovereign
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Alan, does the truck have a 4.11 rear end in it? Is it 10 bolt or 12 bolt? Does it have a TH400, or TH350? It would be interesting to do some detective work on it. We towed our Overlander with our Chevy van, it had the 350 in it, and a lot of extra weight in the form of conversion doodads. For comparison, the Overlander grosses out @6200 pounds, your Sovereign should gross out only a few hundred pounds more (I think about 6500).
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Old 11-26-2006, 07:25 PM   #17
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Quote:
Originally Posted by overlander63
Alan, does the truck have a 4.11 rear end in it? Is it 10 bolt or 12 bolt? Does it have a TH400, or TH350? It would be interesting to do some detective work on it. We towed our Overlander with our Chevy van, it had the 350 in it, and a lot of extra weight in the form of conversion doodads. For comparison, the Overlander grosses out @6200 pounds, your Sovereign should gross out only a few hundred pounds more (I think about 6500).
Terry,
I think the big Sovereigns of Alan's vintage gross 7200#...mine do. But the real world weight gently loaded is around 6500# or so.

Aaron
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Old 11-26-2006, 07:54 PM   #18
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1959 22' Caravanner
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Quote:
Originally Posted by overlander63
Alan, does the truck have a 4.11 rear end in it? Is it 10 bolt or 12 bolt? Does it have a TH400, or TH350? It would be interesting to do some detective work on it. We towed our Overlander with our Chevy van, it had the 350 in it, and a lot of extra weight in the form of conversion doodads. For comparison, the Overlander grosses out @6200 pounds, your Sovereign should gross out only a few hundred pounds more (I think about 6500).
I use to moderate www.coloradok5.com I am a big Chevy nut on the 73-91 square bodies like that one.

That truck will have a 12 bolt and unless it was ordered with a towing package it probably has 3.08 gear since it is a long bed. some of the shorts got a 272...just an awful gear. 4.11 was pretty rare in a V8 1/2 ton. More common in the 292 I6. Usual if it wasn't a special order but had the right options it would get a 3.73.

GM did not start using the 10 bolts in the trucks till 81.

It will have a TH350.


Open the glove box and there will be a sticker that has all the options and if its anything other then the default 3.08 it will be listed. See if it has a G80 locker option as well. If the sticker is not in the glove box some of the early years of 73 and 74 had them under the hood on the driver side inner fender.

Look under the passenger side seat up in the springs and floor and back...see if a factory build sheet is there.

Shame the original grill is missing. It was a deep grill and I think unique to 73 and 74. Kind of rare these days.


Now some thing to warn you about....sitting that long has not been good on the old girl. Even with the low miles I would keep a close eye on the transmission. The age has made the seal hard. If it starts slipping park it.

Those transmissions are very easy to rebuild. Looking about $130 in parts.
http://store.summitracing.com/partde...5&autoview=sku
They have them in stock at the store in Hampton right at I-75.

Going to possibly run into some seal issues with the engine as well. Right off the bat I would flush the coolant system and replace the water pump. With the water pump off I would think real hard about replacing that front crank shaft seal. You need to get a balancer puller and Installer. you can still the threads out of the crank if you don't use and installer. Autozone will loan them to you.

RTV should be used VERY sparing.

Other things I would do
Thermostat
All new coolant hoses


New brake hoses and a complete system flush....Depending on what that fluid looked like I would seriously consider new callipers, wheel cylinders and master. Brakes are just not something to screw with. with so few of miles, that may be the original fluid and it may have collected a lot of moisture over the years and become very acidic and caused rust in the system.


DO NOT BUY A REMAN CARB FOR THAT TRUCK! they are junk. They are jetted wrong and just plain a pain in the butt. Give me a call when you want to rebuild it and I will come over. That's an easy carb to rebuild $14 for the kit. Pick up some JB weld as well. Little trick that needs to be done to fix a float bowl leak issue.

If it has a dead spot taking off its the accelerator pump. When they sit for extended periods the pump rubber will get stuck in the bore and pull off the plunger. New one in the rebuild kit.

take the air cleaner off and shoot a picture from the passenger side and post it. If it has the right choke set up it may be an easy conversion to electric. Much less temperamental then the stove or hot air style chokes.



Some sites of interest.
www.67-72chevytrucks.com Look for a guy by the nick of Woogeroo He's local to us and he sometimes get some of the folks off that site to meet up at swap meets an local car shows. Ask to be added to his mailing list, tell him "Grim" sent you.


This guy is in AL and has some good parts.
http://www.73-87chevytrucks.com/

This guy has some interesting stuff including some information on special package trucks. That Blue and White sub in the header is mine. He has a great list of parts vendors in his links section

http://www.73-87.com/

Sheet metal
http://www.goodmarkindustries.com/HomePage.html they are in Lawrenceville and they supply most places including yearone, LMC and most of the other vendors.

The rotten battery tray I bet you need is still available at the dealer.

Restoration parts
http://www.lmctruck.com/ They will mail you a free catalog. Info on the site.

Year one is tempting but they are overpriced.


Cool find! Now dump it in the weeds and stick some 18's on it. It should have a 5 x 5" lug pattern. Lots of spiffy wheels show up on Craig's.
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Old 11-26-2006, 07:59 PM   #19
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1993 21' Sovereign
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Quote:
Originally Posted by wahoonc
Terry,
I think the big Sovereigns of Alan's vintage gross 7200#...mine do. But the real world weight gently loaded is around 6500# or so.

Aaron
No, I just looked it up, and the dry weight is 4780 pounds, with 2000 pounds for "add-ons" Comes to 6780 pounds.
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Old 11-26-2006, 08:02 PM   #20
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Quote:
Originally Posted by 59toaster
DO NOT BUY A REMAN CARB FOR THAT TRUCK! they are junk. They are jetted wrong and just plain a pain in the butt. Give me a call when you want to rebuild it and I will come over. That's an easy carb to rebuild $14 for the kit. Pick up some JB weld as well. Little trick that needs to be done to fix a float bowl leak issue Quadrajets are prone too.

Ohhhhhhh DO NOT mess with the top flap on the secondaries. Yes it isn;t opening as you rev it up. It won't open till there is load going down the road. People messing with that flap is what got the name "Quadrabog" coined. If it has a dead spot taking off its the accelerator pump. When they sit for extended periods the pump rubber will get stuck in the bore and pull off the plunger. New one in the rebuild kit.

take the air cleaner off and shoot a picture from the passenger side and post it. If it has the right choke set up it may be an easy conversion to electric. Much less temperamental then the stove or hot air style chokes.
I read somewhere above that Alan said he had a 2 barrel on it.
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Old 11-26-2006, 08:07 PM   #21
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Quote:
Originally Posted by overlander63
I read somewhere above that Alan said he had a 2 barrel on it.
Missed that.
Dual jet is a great little carb. I'd stick with it. It makes good power.
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Old 11-26-2006, 08:11 PM   #22
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Quote:
Originally Posted by 59toaster
Missed that.
Dual jet is a great little carb. I'd stick with it. It makes good power.
Want me to edit out the part about the carb for you?
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Old 11-26-2006, 08:16 PM   #23
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Quote:
Originally Posted by overlander63
Want me to edit out the part about the carb for you?
I cleaned it up. A dual is half a quad so most of it was still applicable.
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Old 11-26-2006, 08:19 PM   #24
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Wow lots of good info here. The hoses and belts loook new, and the filters are very clean, it has see thru gas filter that looks barely used. the choke and carb worked fine after I cleaned both, and the thing started right up with a tiny amount of gas poured into the carb to get it going. The trans shifted smoothly although we did not drive it far. next up is fluid and filter change, oil and anti freeze etc.
The order sheet from the dealer was in the paperwork. It has the M40 Turbohydra-matic trans, N41 Power steering, extra gauge package, 3.40 rear axle, disc/drum brakes, heavy duty rear springs, factory a/c (did not see that the first time I read it), GVWR is 5300.

Interesting sheet, wished it had the window sticker, but the books and the sheet were a bonus.
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Old 11-26-2006, 08:33 PM   #25
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Some good news for you, your M40 transmission is a THM400.

M40 TRANSMISSION,3-SPD AUTO (THM400)
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Old 11-26-2006, 08:49 PM   #26
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Quote:
Originally Posted by ALANSD
Wow lots of good info here. The hoses and belts loook new, and the filters are very clean, it has see thru gas filter that looks barely used. the choke and carb worked fine after I cleaned both, and the thing started right up with a tiny amount of gas poured into the carb to get it going. The trans shifted smoothly although we did not drive it far. next up is fluid and filter change, oil and anti freeze etc.
The order sheet from the dealer was in the paperwork. It has the M40 Turbohydra-matic trans, N41 Power steering, extra gauge package, 3.40 rear axle, disc/drum brakes, heavy duty rear springs, factory a/c (did not see that the first time I read it), GVWR is 5300.

Interesting sheet, wished it had the window sticker, but the books and the sheet were a bonus.
It really shows M40 in a 1/2 ton with 2bbl?
That was a very odd ordered truck. Very cool!

Quote:
M4077873 SPEED AUTO TRANSMISSION (TH400)
It has a great gear too. That should run down the road great.

They started calling those trucks "heavy Halfs" or "Big 10" They were nearly 3/4 tons but not quite. Some of it around 76 was to skirts some emissions stuff.

Does it show "trailering or camper special" anywhere? With the gages and gears it sounds like the guy basically made a "camper special" but I think with the camper special package you get the 3.73 rear end and I think it had to be a 3/4 ton. Sounds like he ordered it to split the economy with the power. Ie 2bbl and 3.40 More economy set up.

Does it have Cats?...probably not with that motor combination and you don't need them anyway in GA.


Here is a Special edition info.
http://www.73-87.com/Special_Edition...l_Editions.htm

Guy I know from CK5 did this site of most of the sales brochures.
http://brochures.slosh.com/

See if they locked out the linking feature yet.
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Old 11-26-2006, 09:20 PM   #27
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Quote:
Originally Posted by 59toaster
Does it have Cats?...probably not with that motor combination and you don't need them anyway in GA.
Cats didn't appear until 1975 on Federal emission trucks, and if you got the "15 series" you could register it as a 3/4 ton, and not need cats. I had to become something of an expert on them at the time, although the memory is (thankfully) fading somewhat.
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Old 11-27-2006, 12:32 AM   #28
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A B&M Transpac in my '76 got the trans to 350,000
And it was still pulling fine until a long hill with a load, it would pump out the fluid.
I put them in everything now.

On the body...
Get under it and spray backwards up thru drain vent in bottom of front fenders.
Hose or pressure washer, anything to loosen up the 'compost'

That body has to be historic...
Started in '73
Was still used in Suburban into the '90s
Many upgrades are easy to come by in junk yards.

From photos, does not look like a 18000 mile truck.
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