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1980 gmc dump truck with 8.2 detroit diesel

yukon25008.1

By yukon25008.1
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yukon25008.1 Senior Enthusiast

yukon25008.1

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No not yet.. I told him i would have the cash together this week,, I didnt ask about the bed, Thanks jim for all that info about the gears and shifting.

He also said it was a chevy not gmc, but its a c6500. Im curious about this 8.2 diesel!

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yukon25008.1 Senior Enthusiast

yukon25008.1

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So the gear/tranny set-up it has is a good thing?

do they decide whats needs a cdl or not by the size or weight.. He said it was rated at 27,500

doverarjim Senior Enthusiast

doverarjim

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Weight will detrimne if you need cdl, if you use it on a farm you might get around that. If the truck is over 24,000 lbs you will need one. :jester:

kstruckcountry Senior Enthusiast

kstruckcountry

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Ok I was wondering, cause the Super 10 is split in every gear. I ran one in an early 2000s Freightshaker. I like the plain 10 speeds better, it's a lot less work.

 

And by the way, if you need the clutch for anything other than starting out in a semi, you're driving it wrong. Not trying to be a jerk, but matching gears is easy, and using the clutch is a lot of unnecessary wear for a semi.

Chris Senior Enthusiast

Chris

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When I worked on semis is use the clutch but I moved them in the yard.

 

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Northern Ninja Enthusiast

Northern Ninja

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Ok I was wondering, cause the Super 10 is split in every gear. I ran one in an early 2000s Freightshaker. I like the plain 10 speeds better, it's a lot less work.

 

And by the way, if you need the clutch for anything other than starting out in a semi, you're driving it wrong. Not trying to be a jerk, but matching gears is easy, and using the clutch is a lot of unnecessary wear for a semi.

 

True, but in the case of these two speeds, you need to use the clutch to cut the power to the rear-end or the two speed won't shift.

yukon25008.1 Senior Enthusiast

yukon25008.1

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So im not gonna have an issue getting this home?? Its a 2 hr ride, And ive driven other big trucks.. Just not a 2 spd rear,

8.1HD/ALLISON Senior Enthusiast

8.1HD/ALLISON

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Ask the previous owner to show you how to shift. If you can drive a manual is no big deal, just a different pattern. On the cdl, here in Indiana you have to have a cdl for anything over 26,000 GVW, or if it has air brakes. You will need to check your local laws.

Morgan1986 Senior Enthusiast

Morgan1986

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I think you should make a you tube vid . It might be entertaining. You should be fine driving it if you can drive a stick. Just get him to show you how . Once you learn how to drive a stick its like a pedal bike you never forget . All sticks are basically the same tractors to trucks to cars . Good luck .

brainpause Enthusiast

brainpause

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We had a Ford C900 fire engine, 1964 I believe, that had a 5 speed with split rear. Once rolling, I could go through the final 9 gears without the clutch. Matter of fact, its hydraulic clutch went out at the scene of a fire. I started the engine while in granny low, which got me rolling, and then I drove it back to town without the clutch. Cancelled the tow truck.

 

With the truck unloaded, you will likely be able to start out in 2nd Low, stay in low range for 3-4-5, and then switch to 5 high for cruising.

Nitro375 Enthusiast

Nitro375

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That ol Detroit combined with the low gearing in a dump truck will have some serious stump pulling torque man don't worry about it. To bad it's not an old two-stroke Detroit :-D

 

Are you talking the compound forced induction? Our old generators in the air force had that. Turbo and s/c

 

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Ya haha. Actually the 2 stroker was around for a very long time, I'm pretty sure they all had to have blowers. Someone correct me if im wrong but i think the old 2t diesel is incapable of scavenging its own air. Pretty sure the originals were a WW2 thing..??

 

Anyways i dont know much about them but I heard one run before in a dump truck it sounded pretty cool!!!

 

 

Correct, no blower and she won't fire. Compound induction with the turbo and supercharger came later. I once saw an old minesweeper that had two straight eight cyl. 2 stroke, Gimmy diesels in it. I forget what class it was but it was designed to be fast enough to run ahead of the newer carriers of the time. It was pretty impressive and super cool.

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