Hmmmmmm..... Ok guru's, let me know.

[dodgetkboy78]

I have been thinking about doing this for a long time, the five speed just don't do er for the 3000RPM cummins.
This, is a small case roadranger, eight speed. I think it'll fit pretty easy.

What'ya think? I know I have to modify the floor and such, but you guys think it's doable?

Be freakin' awsome if it worked.

http://cgi.ebay.com/ebaymotors/FULLER-T ... 049957932&

[CumminsPride]

I'm not sure what you're trying to accomplish but I doubt the final drive ratio is any higher than your 5spd. However the gears are alot closer together. It would be unique.

[Philip]

That trans does not have a OD in it. If it did the first letters of the model number would have been RTO.

You need OD. Take your truck for a drive and leave it in 4th for a while. You will see what I mean.

[bgilbert]

Got a 3200rpm gov spring in your truck? That will help. But there ain't much going on above 3000rpm in a VE pump truck anyways to warrant the huge investment and modifications to install an Eaton Fuller.

[dodgetkboy78]

They make a RTO-RTX-7XXXX08/10 too, I wasn't talking about this particular one. The reason is, because yeah, the gears are closer, way closer, I would never need to rev it all to sthi from second to third climbing a hill with a heavy trailer behind me. Hell, I could keep it between 1800-2500 all day long. Also, I could kiss my transmission issues goodbye, there isn't much of a chance I would kill the fuller from anything I do.
Plus, it would be flat neat. I think at least.

[CumminsPride]

Well then get the trans, Have the input shaft machined to fit our clutches, Then make a bell housing to trans adapter. I'm sure the input shaft is long and stout enough to handle the stress. Although I doubt the slave will clear the trans face though. But with enough effort anyhting can be done.

[Philip]

As far as bolting it up that isn't to hard. Find a SAE #3 bellhousing for it. Then get a SAE #3 engine adapter, flywheel, clutch, starter. The biggest issue would be the the hyd hookup. Those trans use manual linkage for the clutch where our trucks use hyd slave cylinders. Our slave cylinders do not have enough travel for those clutches. You could try to find a older truck with the manual linkage. It would need reinforced a lot. The clutch for a semi takes a lot more force to disengage it than a gasser clutch does.

[bgilbert]

How small of a clutch can one use for that particular E/F? Might need a body lift if bigger than 13".

[bgilbert]

How small of a clutch can one use for that particular E/F? Might need a body lift if bigger than 13".

[Philip]

It will need a body lift. Look at the link. There is a lot of mass above the input shaft center lne. Then don't for get the shift tower.

I am not sure on what will need to be done to go from a 1410 j-joint rear axle to the massive u-joints used on the back of that trans. Those u-joints are made for a 5" or so drive shaft. Our trucks is 3" or so.

Speedo shouldn't be to much of a problem. Some of the newer trucks are down to 3:36 rear gears now. So something could be found I bet.

[PToombs]

On TDR a guy put in a 6610 (?) Roadranger in his truck. He had clutch issues, he had to get a master cyl from a Kenworth to get it to work. The other problem he had was it wasn't an OD trans. The rpm's were higher than before he swapped it.
He had some small issues with the air lines for the shifting and stuff, but he got that cleared up quick.

The cool factor is a 10 though!

[bgilbert]

The cool factor is a 10 though!

No doubt, I would love to have a non-synchro'd 9 or 10 speed. I'd probly have to take over the dynoing duties for Dunbar at the event's though hehe.

[oldcool90]

The cool factor is a 10 though!

No doubt, I would love to have a non-synchro'd 9 or 10 speed. I'd probly have to take over the dynoing duties for Dunbar at the event's though hehe.

I thought truck driver's didn't like shifting

[Philip]

Bill would be looking for on of the newer auto shift 9 spds.

[bgilbert]

I thought truck driver's didn't like shifting

I don't like that clutch pedal for every shift. With a non-synchro'd tranny you (I) wouldn't use the clutch. Of course you (I) can float gears in just about any manual trans on the road today, but I just don't care to with my getrag.