The Stovebolt Site Forums The Parking Lot Big Bolts Rear gears for '41-52 ton-and-a-halfs ???

Since I have been searching for about a year and a half now, I just gotta ask...

...has anyone here ever actually seen a set of the "Optional" 5.43 gears (ring & pinion)???

I know they are listed in the books, but...

Hy Tango, yes I have seen one set, they were in a Canadian 1100 series truck, a 1 1/4 ton, none of the 1 1/2 tons I've come across have had them, hope that helps.

I have the same question. I have found a set for sale for a 1940 1.5 ton and am wondering if they will fit my 1946 1.5 ton. As far as I can tell they have the same number of teeth as is specified in the online 1946 tech manual. Ryan Auto Parts in Iowa is selling them. Their phone number is 712-322-4640. I am awaiting an email reply from them.

3b...what year was that? And I've never even seen a listing for a "1-1/4 ton" (?) Canadian only maybe?

PJ...I've been told the '40 gears will not work in the '41 to 52's. Something about it being a closed torque tube and in spite of being the same ratio won't fit the later rear ends. I too came across a 1940 set but was advised by the seller (California parts house)they would not work in my '46.

Hy Tango,I checked one of my parts books, and they actually refer to the 1100 series as a 1 1/2 ton, the truck in question was a 1946, hope that helps.

Thanks 3B --- Chevy must have used entirely different designations for the Canadian bound vehicles. The US models included a 3000, 4000, 5000 and 6000 series but nothing like an 1100. Go figure.

May have to start looking further north. Would love to find one of those beasties. Or just the rear end...or...just the ring & pinion.

Hy Tango, Canadian trucks were built in Canada, in Oshawa Ontario. In 1951 they dropped the tonnage designation and began using the g.v.w. for each series, the 1100 series g.v.w. was 11,000 l.b.s.. The 1100 series designation disappeared with the 1955 2nd or B series, hope that helps.

Thanks again 3B --- very good info indeed. Was not at all aware of the Canadian variations & designations. This would be an excellent addition to any permanent Chevy truck database. (Is there such a thing here?)

And, as I said...also makes me want to make a trip up north. Been quite a while but I always loved the scenery around BC. Just spectacular.

Pretty easy to fit a modern D70 or 80 under one of these trucks. 10 on 7.25" bolt pattern is pretty common on modern GM trucks, hub diameter slightly larger for tubeless wheels, bore out old 20" wheels or go w/ tubeless(rare) 22.5" wheels, ratios up to 3.54, easy. Matching 5 on 7.25" front axle might be wider. What is your bolt pattern? That is the main consideration.

Hey Ed --- Thanks for the info. Any idea what make/model/years the D70 & 80 might have been on?

BTW...the bolt pattern is 10 - 5/8" bolts on 7-1/4" circle.

Never mind. Did some Googling and below is what I found in case anyone else is looking...

Dana 80 Rear Axle

Common Applications:

Dodge

1994-2002 3500
1994-2002 2500 equipped with manual transmissions and Diesel or V10 engines

Ford

1988-1998 F-350 DRW (Select chassis cabs and pick ups)
1999-2011 F-350 DRW
1988-2004 F-450
2011-2012 F-450 (13,050 GVW)

GM

1991-2002 C3500 HD
Various heavy duty commercial applications

You're on the right track but only the GM example is a on the mark. The others have different bolt patterns.

We have a tech tip about the very axles and swap Ed is talking about.
http://www.stovebolt.com/techtips/bigbolts/p30swap/