The Stovebolt Site Forums The Parking Lot Big Bolts 5.43 gear set for the H110

I have a running thread already that discusses this topic, but the title is different and the thread got off the original topic.

I recently located and acquired a brand new 5.43 gear set for the H110 axle in my 1950 4100. I purchased it from Inter-Continental Gear and Brake out of Grand Prairie, TX. The description and part number on the box reads as follows:

"H110 Crown/Pinion Ratio 5.43 27 spline GM2352908"

Now - I have no earthly idea where the "27 spline" part comes from as the pinion only has 10 splines on it and so do the axles. All I know is that this gear fit in my axle. The gear set manufacturer is Cobra Gear. The set cost me $395 + shipping.

I have plenty of pictures which I will post up later as soon as I get time to upload them somewhere that will host them.

I have not yet finished the installation. Still waiting on a few gaskets and seals to come in. I'll be sure to update the thread with my road test results. I am hoping to be able to achieve 55mph now!

Finally got this all back together this afternoon. Achieved 58mph on the test drive!

Nice!
That's a good thing to know about and a good option for faster gears without a whole axle swap.

Would you be interested in writing a Tech Tip on the swap and include pictures?

Grigg

I would. I did take lots of pictures. I need to find a better picture host than photobucket. It used to be great, but now its all ads and garbage.

Great to see that you like the gear set. In my opinion,it's the single best thing anyone could do for a 'cruiser' big bolt.

Living in a rural area, it's a hoot to drive the old truck around at regular road speed. I found out that its possible to easily outrun the other 1950's components,especially the steering.

Enjoy it,and please take care with the 'speed demon' you now have.

My truck only had 37,XXX miles on it when it was abandoned all those years ago. Nothing on the chassis is worn out. I put 6 new tires on it and fixed the brakes. It drives great!

Wondering if that gear set would fit any of the '42 to '46 series big bolts. Anybody know?

Somehow I thought this was for a 2 speed axle.. but I believe you're talking about a single speed rear right?
That clarification will help others in the future.

Pictures would be great!

If they use the same H110 axle it would.

And yes, this is a single speed H110 axle. As far as I know there weren't any alternate ring and pinion ratios for the 2-speed axles of this vintage.

The 1946 Art Deco's 1.5 were standard with a single speed,
a 2 sp rear was optional. The 2 ton only came with
the 2 sp rear.

Now my question is will the 1.5 ton rear fit on a 2
ton, and would it be a direct bolt in place?

Also could the 2 ton wheels and rear brakes fit on
the 1.5 rear?
Jeffrey

Please start a new thread for those questions, they don't involve the gear swap as subject of this thread.

Thanks,
Grigg

The information I have for the 1946 year models doesn't refer to any of the axles as H110 that I have seen yet (maybe I'm just not on the right data page). I'll offer the following to hopefully aid in cross-refrencing the axles the gears in question might fit:

1946 2 tons were available with a single speed axle. The single speed axle used in the 2 ton is the same axle as the 1.5 ton. It is listed as regular production on all 5000 and 6000 series trucks and had a 6.17 ratio, 37-6 gear teeth. The two speed axle is listed as RPO 202 for all 5000, 6100, and 6400 models and had 6.03 and 7.99 ratios (19-8 teeth to intermediate shaft and then 33-13 teeth and 37-11 teeth respectively).

The 5000 and 6000 series single speed axle is different than the ones listed for the 4000 series trucks in the 1946 data I have. The 1946 4000 series trucks had a 5.43 ratio, 38-7 gear teeth, as regular production, with a 6.17 ratio, 37-6 gear teeth, as RPO 205A. These axles differed in that the axle shafts were 1-7/16" instead of 1-9/16", and list an oil capacity of 11 pints instead of 12 pints. This capacity difference means probably a few differences in the construction of the housing as well, as they are noted separately in the housing type section of the table but with similar descriptions (no notes on what the differences are, but the single speed axle in my 1946 2 ton is the described 2 ton single speed axle). The part numbers for the bearings all seem to be the same though, so there maybe a chance of some interchangeability. There weren't a lot of axle changes through these years so its possible that some of this data still applies for the 1950 year model in the original post.

The 5.43 and the 6.17 ratios are no doubt unique to the H110. It is possible though that there were some variations of the axle assembly as a whole which may have had a designation other than H110.

I do know the H110 was in production for a very long time. Chevrolet was still putting it in their trucks up until 1968 I know for a fact.