Just bought a dump truck

[Builder]

Big block you say? Hmmm... it deffenatly has a small block in it with no smog.
I was thinking a 366 was a stroked 350? (The vin says 366.)
Maybe some one replaced it.

Read here, scroll way down to almost the bottom:


Chevrolet Big-Block engine - Wikipedia, the free encyclopedia

Commercial applications
Mark IV engines saw extensive application in Chevrolet and GMC medium duty trucks, as well as in Blue Bird Corporation All American and TC/2000 transit buses (the latter up until 1995, using a purpose-built, carbureted 427). In addition to the 427, a 366-cubic inch (6.0 liter) version was produced for the commercial market. Both the 366 and 427 commercial versions were built with a raised deck, four bolt main bearing cap cylinder block to accommodate an extra oil control ring on the pistons. Unfortunately, the raised deck design complicated the use of the block in racing applications, as standard intake manifolds required spacers for proper fit. Distributors with adjustable collars that allowed adjustments to the length of the distributor shaft also had to be used with 366 and 427 truck blocks.

 

[GT2]

Read here, scroll way down to almost the bottom:


Chevrolet Big-Block engine - Wikipedia, the free encyclopedia

Thanks for the info, definatly not a 366 in my truck.

 

[john_bud]

Thanks, its a 366 (first time I've heard of one).
It runs great! I took it to the recycle yard yesterday to dump a little broken up asphalt that was a little bonus when I bought it.
Got in a little practice with the splitter.
Bad news, empty scale weight is 11300#, that only gives me a 8200# load.
O well, at least the gravel pit is close.

I thought you had it tagged for 14,000? That would only leave 2700 pounds for load. (or as I stated previously, you're just a bag of chips away from being over weight!)...

 

[DieselPower]

Shame your not a little closer to me. I have a friend who is a school bus contractor. He has a good running 366 engine with the tranny still attached to it. Was a good running engine when it was pulled years ago out of a BlueBird Bus. He just wants to get rid of it. Would be nice to drop a big block back in there. As old as the truck is there was probably no emissions system to speak of on it. The medium duty trucks didn't start to get smogged out until the 80's. Those were a nightmare to work on. Unlike automotive engines they had two smog systems, one for each head including two smog pumps.

 

[GT2]

Shame your not a little closer to me. I have a friend who is a school bus contractor. He has a good running 366 engine with the tranny still attached to it. Was a good running engine when it was pulled years ago out of a BlueBird Bus. He just wants to get rid of it. Would be nice to drop a big block back in there. As old as the truck is there was probably no emissions system to speak of on it. The medium duty trucks didn't start to get smogged out until the 80's. Those were a nightmare to work on. Unlike automotive engines they had two smog systems, one for each head including two smog pumps.

Well I'm not sure I want a big block, especially since small block chevs are all around me at work. Cheap parts!
Tim

 

[dieselnut2]

Best of luck to you with your new truck.

 

[GT2]

Best of luck to you with your new truck.

Thanks,
I'm hoping it will come in handy for building a road base, and digging a pond. as well as many other projects.
Tim

 

[GT2]

Hi guys, got a question for the heavy equipment mechanics out there.
This weekend I hauled my trailer ( 8000#) with the dump truck over to Idaho, up two mountain passes and a total of about 380 miles.
Any how I made it with no problems, however I got stuck in the snow on my property. I put the chains on and proceeded to rock her in 1st and reverse, including some power braking to try and limit wheel spin.
I now have a kind of clunking/ scrunching sound coming from the rear end area.
I wasn't able to spend any time to check it out so I drove it about a mile with the noise not getting worse and parked it.
At first I thought I damaged the rear end, but now I'm thinking U joints?
Any ideas?
Thanks, Tim

 

[Builder]

Hi guys, got a question for the heavy equipment mechanics out there.
This weekend I hauled my trailer ( 8000#) with the dump truck over to Idaho, up two mountain passes and a total of about 380 miles.
Any how I made it with no problems, however I got stuck in the snow on my property. I put the chains on and proceeded to rock her in 1st and reverse, including some power braking to try and limit wheel spin.
I now have a kind of clunking/ scrunching sound coming from the rear end area.
I wasn't able to spend any time to check it out so I drove it about a mile with the noise not getting worse and parked it.
At first I thought I damaged the rear end, but now I'm thinking U joints?
Any ideas?
Thanks, Tim

That's hopefully what you did. That way the repair is inexpensive.
Lay on your back under the truck with some gloves on grasp the driveshaft by the u joint and see if you can shake it. See if it moves or makes a rattle. Visually check the ujoint to see if it's damaged. If it is, it's a 10 min replacement job.

If it's not, it could be damage to the ring & pinion in the rear.

 

[chickenhead]

I just bought a 1974 GMC 6000 with a flatbed dump on it. It has a 350, with a 4+2 rear end. When I first went to check it out it started up easily and ran real well. I drove it home about 55 miles, man that sucked. It seemed like it was in low the whole time. I realize its a huge truck, but it didnt want to go faster than 45 mph. I pulled over once and to check it and the headers were glowing red, so I let it cool down and checked the water everything was ok. Not sure why they were glowing. To me it seems like something isnt right, even when your going 45mph that is with your engine wrapped out. Is there a way the rear end is stuck in low and its not switching back to high maybe?