Are there any regular cab dually picture threads?

[Hulk Will Smash]

I have two extra doors and only one drive axle on my R30. I drive it 99% surface street "city" driving and generally see right around 6mpg. And it is soooo worth it! I love my truck!
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[C-10 simplex]

i think the only way to get good economy is to go diesel. Since 1 tons have a minimum of 3.21 rear gear it's still do-able towing wise and you can still keep up with traffic---reasonably. Although not as fast as small block or big block.

[rs74]

Or one could put in a 6.0L FI engine with a decent tune and pull some better MPG's. Someone here has done this with a blazer or a suburban and has got good results.

[rs74]

I knew I would find it somewhere.

Originally Posted by Firebirdjones
That's always been a question in my mind. My fathers 03 3/4 ton 4x4 with the 6.0/4L80 and 4.10 gears averages about 15 mpg for him. Not horrible but not what I would consider all that great for something with fuel injection and overdrive. Everyone thinks the 6.0 should be a gas hog,,,I mean lets face it,,,it's not a big engine,,,it's only 364 cubes, there is no reason for it to be considered a gas hog. It only has 9 cubic inches over the 355 I used to run in my blazer. I now run the same 2004 6.0 engine in my 72 4x4 blazer with a 4L60 and 3.73 gears and get 17/22 city/highway with an optimized tune. I think that's alot of the answer to your question. GM puts such a lazy tune in these things (low timing tables/pig rich WOT AFR's) makes the engines lazy. My neighbors 03 duramax 3/4 ton is getting him 17-18 mpg which doesn't seem all that special to me for a diesel. Again I'm sure there is something left on the table with the tune though. If I can get 14 mpg out of my 79 1 ton with a 502 in it, no overdrive, and 3.73 gears, then there should be potential in any pickup truck out there if optimized properly.

This is what I have in mind if I can get my hands on this 86 I am looking at.

[1985-GMC]

My 78 gets 9 unloaded and slightly less loaded. This is with everything that's in my sig, 245/75/16 tires, 4:11 gears, and a 800 cfm quadrajet that's been modified to about 840 cfm and quite a bit bigger primary jets. If I keep the 454 in it much longer i'm going to build another qjet for mpg. I plan on putting a cummins in it with a NV4500, then I will get around 20mpg if not more. My old dually had a mildly built 454 and it got 7 no matter what, except for one time I got 12 out of it. I don't know why, I double and triple checked my numbers, made sure I wrote my mileage down right, didn't change anything and didn't drive any different.

[Bczik84]

Originally Posted by 1985-GMC

My old C30, A local guys K30, any some internet ones.

The 2 black and brown duallys are awesome
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[Bczik84]

Any of you guys do a cummins 4bt/6bt swap
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[1985-GMC]

There are a few... http://67-72chevytrucks.com/vboard/f...play.php?f=240

Btw that is a new section, most of them aren't in there.
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[SKT]

Originally Posted by TwinTurbo

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This is a beautiful truck.

Job well done w/ this one Sir!

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[rs74]

My newest addition.

[Chevy@OK]

Originally Posted by wwj75c30

i got my 75 c30 2wd but i lifted it with 3" coil spacers. i wanna convert it to 4x4 if i dont sell it. only 81k original miles and no rust or dents only paid $350 from original owner

Dang man $350!!!!!!!! if you want to sell it for that much or know of a k30 for that much there is a 16 year old in Tulsa OK that needs a project truck cheap and fast. FYI lol

[special-K]

Here is a '78 Scottsdale Camper Special 454/4spd with wood floor I had in the late-80s. The pictures was right after I bought it with temp tag still on. I had already put the new chrome bumper on (had a new painted one). I lost the running boards and put radials/chrome Budds on. I ran dual exhaust, put quality stereo in, and had a little pinstriping done to match the piece on the rear fenders. That's all you had to do back then. They were everywhere and you just picked the one you wanted. I bought this for work, so I could play with my old trucks.

[mongocanfly]

1981 c 30

[Crcrft78]

Just picked up this 1 owner 73.