John Griffin
Senior Member
Small cam Cummins 250 hp 685 ft lbs naturally aspirated. Not much power to move 72,000 lbs.
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Why I hate boom trucks
- Thread starter crane operator
- Start date
crane operator
Senior Member
6-71 is only 230 hp, and 600 torque. And it slows down if you even think "hill". At least the old 613 boxes have lots of gears down low, because you're going to need them.
We had two old groves in iowa that had been repowered. One big cam 400 and a L10. The big cam 400 was a tight fit, but it was way nicer to drive. The l10 had more room, but it was still a dog.
We had two old groves in iowa that had been repowered. One big cam 400 and a L10. The big cam 400 was a tight fit, but it was way nicer to drive. The l10 had more room, but it was still a dog.
crane operator
Senior Member
I've seen one tms300 with a mack 300 in line 6 repower job, it fit really well, and the mack torque would be nice for driving. Mack at least has all the fuel and air and ps over on the passenger side, vs. cummins or cat.
I've seen several big cam's as repowers, and they are a tight fit if you have a big turbo. Fuel pump and air compressor/ ps pump are a bisterd to get at.
I have a 444 cummins I was going to put in mine, and never got around to it. A 3406 won't fit without severely cutting the frame rails up front.
My tms300 is going to become a yard crane/ counterweight loader. Going to set in one spot up on blocks where we can get the trucks and trailers right beside it. Make a stack of weights around it like playing cards.
I think if I was going to repower my tms300 today, I would find a old mechanical 4 valve mack, and crank up the pump a little, with a straight 9 or 10 speed. If you go to any bigger 13/18/15/8ll transmission, you run into length issues.
I've seen several big cam's as repowers, and they are a tight fit if you have a big turbo. Fuel pump and air compressor/ ps pump are a bisterd to get at.
I have a 444 cummins I was going to put in mine, and never got around to it. A 3406 won't fit without severely cutting the frame rails up front.
My tms300 is going to become a yard crane/ counterweight loader. Going to set in one spot up on blocks where we can get the trucks and trailers right beside it. Make a stack of weights around it like playing cards.
I think if I was going to repower my tms300 today, I would find a old mechanical 4 valve mack, and crank up the pump a little, with a straight 9 or 10 speed. If you go to any bigger 13/18/15/8ll transmission, you run into length issues.
Truck Shop
Senior Member
Be glad you didn't---fuel related parts have become a issue.
crane operator
Senior Member
Its in my back room if you can find someone that needs it. I guess maybe there's someone restoring a truck and always wanted a 444.
I was going to swap to high flow cooling, and water cooled intake air, because I didn't have room for the air to air, and it all just got complicated.
We kind of quit using the crane, and for what I want to do with it the rest of its life- the 6-71 will do just fine.
Truck Shop
Senior Member
Everything from cylinder heads up is BCIV/444/STC-unique to that engine. The block down is
a basic big cam--except the cam it's 444 only. Not too many interested in 444's these days strictly
because of the STC & low flow issues. I just parted one out for cam followers and a few other
usable items.
a basic big cam--except the cam it's 444 only. Not too many interested in 444's these days strictly
because of the STC & low flow issues. I just parted one out for cam followers and a few other
usable items.
crane operator
Senior Member
When I was looking at going to water cooled instead of air to air, I got to measuring and test fitting stuff, I really wasn't sure the crossover was going to fit, without carving around on the rocker box covers.
Truck Shop
Senior Member
Cummins made 1" 2" 3" risers that went between jacket cooler and crossover, I know where several
of each are, you don't need them anymore though.
cfherrman
Senior Member
There's several advantages to automatics unless you just driving all highway
John Griffin
Senior Member
I actually have a mack 350 sitting here. It really hadn't crossed my mind as a possibility for repowering a tms300 with a mack engine. I also have a larger 13 speed and a 350 cummins sitting in my stash. I have two tms300s but we only use one of them. They are stout cranes for their size and hold up well to tree work. I'm kinda on the fence as to what direction to go with them. Sell them and buy a newer 50 or 60 ton truck crane or sink some money and time repowering them. Neither has an LMI. I keep getting water in my forward rear axle on the tms. I need to change the oil again and try to figure out where it's getting in.
We do have an rt crane as our yard crane. We might end up with it at job sites so I may do the same thing with my good tms300 since we load and unload our gmk counterweights all the time. We also use it for working on equipment as well as unloading large logs.
crane operator
Senior Member
If its a 350 with the big air box on top of the drivers side of the motor, the big box can kind of be in the way. But that is better than dealing with a air to air cooler, there's just not any room to run the piping past the radiator and the engine shroud.
Nothing of a newer crane will be as well built as a tms300. They are so heavily built, that it makes them great for tree work.
New stuff is all lighter built. You have to go to a 60 ton to get the same crane as a 300
Nothing of a newer crane will be as well built as a tms300. They are so heavily built, that it makes them great for tree work.
New stuff is all lighter built. You have to go to a 60 ton to get the same crane as a 300
skyking1
Senior Member
glad you found a use for the tms300, so I don't have to drive it out west.
Our tms300 has the 6-71 and I'd second that the thought of a hill makes it slow down. When it's in high gear and reving 2000rpm the speedo says it's doing 50mph. But the guys following me say it's not going much over 40mph. And it has to be a nice long straight away or down hill to get there.
skyking1
Senior Member
The '60 Lorain 50 ton truck had a gigantic 6 gasser, with an air shift 5 speed and a 3 speed brownie. 40 tops, 25 on the hint of a grade. We always moved it at night.
UPDATE: An overturned vehicle has traffic on Route 309 near the Telford exit backed up | Wissnow
Emergency responders are on the scene attempting to place the vehicle upright
northpennnow.com
MarcusZ1967
Senior Member
Looks like he slid quite a ways.....UPDATE: An overturned vehicle has traffic on Route 309 near the Telford exit backed up | Wissnow
Emergency responders are on the scene attempting to place the vehicle upright
renovator
Well-Known Member
But it sounds nice.