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Alternatives to gearing change.

Unread postby badbillybiker on Tue Mar 04, 2014 4:38 pm

What are the largest wheels/tires available for the Travco to alter the final drive ratio?
Would that not be cheaper than a GV or a rear axle change trying to raise the mpg.?
I dont want to state another alternative yet. would like to beat this to death first...
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Re: Alternatives to gearing change.

Unread postby Acesneights on Tue Mar 04, 2014 5:38 pm

There is not a ton of clearence in the wheel wells for much taller tires not to mention they would probably add to the height(minimal) and alot to the sway. GV is a good option if you can find a used one but I personally would go for the 518 swap.
I would think you would need the have the 19.5 tubeless rims to even consider it and then you need to watch width of the tires on the rear as the rims on these are narrow.
I don't think you could add enough diameter to the tire to make any noticeable difference.
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1974 Travco 220 Parts unit
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Re: Alternatives to gearing change.

Unread postby badbillybiker on Tue Mar 04, 2014 6:20 pm

Well... Went to the Mopar site and it sounded very discouraging to get a "518" trans
to fit against a 440 cui. motor to haul a travco and complain about trying to fit a
trans in a spacious area underneath a motor home.....
Here goes... A modded rim with 22.5 radials as used on a truck or possibly a school bus?
or as an ex ups road driver i am always scoping out all kinds of equipment and now
am noticing UPS package trucks switching some of their rear dual tires for
a single one, double-wide replacing the dual tires. UPS is a company constantly looking for cutting
costs and improving their fleet mpg... You can always have the rims indexed and re-drilled to
a 5 bolt pattern... rear wheel wells can be enlarged easily and keep the 19.5 for the fronts...IMO
Am I peeing into the wind on this?
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Re: Alternatives to gearing change.

Unread postby Acesneights on Tue Mar 04, 2014 9:15 pm

The 518 would probably be cheaper. The bellhousing conversion wasnt that bad pricewise and looked pretty straight forward.
Custom rims get expensive fast and 22.5r start at around 250$/tire for a decent brand. I would not run caps.
1975 Travco 270
1974 Travco 220 Parts unit
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Re: Alternatives to gearing change.

Unread postby badbillybiker on Sun Mar 30, 2014 9:24 pm

HHmmm. Alternative or results...
Thought there was a post here where one had
mentioned 4:10 rear gears in his dana 70...
How much would this drop rpms at a steady 60 mph
and what percentage of savings in gasoline
would be realized? Anyone know?
As the 55 National Speed limit fiasco is over
isnt it about time to crank'er up a notch or two??
What would the "best" alternative ratio...
Wanna' burn some gas up before it all goes to the
urkraine and we're short on gas once again :?:
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Re: Alternatives to gearing change.

Unread postby Acesneights on Mon Mar 31, 2014 9:27 pm

I don't think 4:10 will make a huge difference . A little but not earth shattering.
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1974 Travco 220 Parts unit
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Re: Alternatives to gearing change.

Unread postby badbillybiker on Fri Apr 11, 2014 2:21 pm

Here goes... against my better judgement...
Stating my earlier statement on an alternative..
How about a stick shift Travco...?
Anyone here done one?..
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I am still looking for a optional OD

Unread postby badbillybiker on Sat Nov 01, 2014 4:34 pm

Looked at the Hone O Matic, been out of production for over 30 years... Gear Vendors is pricey but cant find out if the price includes installation and if there are "branches" that would install or it mandates a trip to the W.Coast...
Found this little item as I was looking for a 727 OD replacement and thought of sharing and looking for input,
and if it goes or blows...and also another item with another type swap...
A 727 trans to a A518... sorry forgot the 8 on the pic...FWIW
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