The Stovebolt Site Forums The Parking Lot Big Bolts '48 6400 hydraulics

on a 2ton grain truck or other flatbed lift body, where is the hydraulic pump mounted? Does anyone know the load lift capacity?

On my 1940 chevy coe the pump is part of the lift cylinder. And is run PTO off the trans.

Thank you.
That is what I assumed but I haven't seen one. My client has requested a new transmission (automatic) so I will have to rig engine driven hydraulics. He also requested the flatbed converted to a lift and slide bed (like a ramp truck) but look original. That is why I wanted to know the original lift capacity. I would like to use an original lift and a modified sub frame.

It all depends on what brand of hoist you have. The trucks did not leave the factory with a hoist installed. Someone installed them later and there were many different brands.

mine is a Galion and is part of the cylinder

There is another option. The wife wants our 50 6400 an auto also.

I want a 4l80E. if you mate a np203 or 205 transfer case they have the provision to use a pto output.

So what do you do with a transfer case on a two wheel drive truck? Well you make sure it is divorced or you take out the chain to run the front out put. You get a low range, help ful sometimes if you have gotten rid of the two speed rear end. and of course you get your pto out put.

A friend of mine had Chevron install a brand new 19' Rollback bed on his 1953 Ford F-7. He had them install 1950's style lights and it looks great! Just another option for your client...

Mike B

"mine is a Galion and is part of the cylinder"

...well, not exactly 51 ashton. It is a seperate piece but is manifold mounted to the cylinder assembly. Converto and I think Marion also used this arrangement. It elininated hose's and the connections but as the cylinder extended it inclined and that put a large strain on the u-joint conneced to the pump.

Jim Sears: only by knowing the hoist brand, model and application could a capacity be determined for the hoist you have. It is probably in the 5-8 ton range. Sounds like a twin arm underbody design and as such it wouldn't be choice for a roll back or implement carrier. I'd forget it and use a new product that is double acting.

Depends on the transmission. F**ds and Allisons have provisions for PTO's. The pump can be placed either piggy back on the PTO or close by driven by an enclosed shaft.

Thanks for the information.
OK, It looks like the original stake body will be mounted on a modern tip/slide sub-frame.

Now for transmission information (should this be another thread?)
What, if ever, was the first year that Chevy mated a straight 6 with an automatic trans on a 1-1/2 or 2 ton.
If never, what was the earliest engine/automatic combination in this weight class.

1956 was the first year for an automatic transmission to be used in the 1-1/2 ton and up Chevrolet trucks.

The 4000 Series trucks had the optional 4-speed Hydramatic.

The 5000 Series and up had the optional 6-speed Powermatic that was made by Allison.

Both of these transmissions could be connected to either a 6 or 8 cylinder motor.

Mike B

Thanks again.
Now I have enough to design the project. This is going to a great project. I do Antique mechanical restorations and go to extremes to have everything authentic. This will be the first time in years I've done a modified project. I will post information and pictures as it goes on.
Now I just have to clear out a space for it.