5:43 to 1 ratio gears avaialbility?

Area for Discussion of non-original and non-Theater Modifications to the GM family of WWII trucks. This would include engine, transmission, and driveline swaps, etc.
Post Reply
daveyboy
First Lieutenant
First Lieutenant
Posts: 66
Joined: Mon Jun 04, 2007 3:09 pm
Location: Plano, TEXAS

5:43 to 1 ratio gears avaialbility?

Post by daveyboy »

Right here on this site under Increasing the speed in your CCKW,

it is written:

"D. Finally you can replace all the ring and pinions (banjo axle’d trucks) with lower numerical ratio civilian 1.5 ton truck gears or with the M211 or M135 gears. The M211 and M135 gear ratio is 6.16 to 1 as opposed to the WW2 GM ratio of 6.66 to 1. The difference is only 8% or 48 mph versus 45 mph stock. To me it is not worth all that effort. If you change to the civilian 5.43 to 1 ratio (times 3 differentials), you will get a 25% increase or about 56 mph versus 45 mph stock.

Has anyone EVER really found a set of these gears, and if so, what truck to look for them in?

thanks
dr deuce
Brigadier General
Brigadier General
Posts: 2400
Joined: Thu Jun 08, 2006 1:10 am
Location: Pembroke NH
Contact:

Post by dr deuce »

You need to find the 1.5 ton chev civy truck rears times 3

A higher reving (newer 270/302 or 235/261 in the case of a chev) engine is easier
Dr Deuce Over 50,000 driven miles in a CCKW
1942 CCKW closed cab shopvan
1943 CCKW closed cab cargo w/M32 MG mount
1944 CCKW open cab LeRoi Kompressor
1944 CCKW open cab F1 Aircraft fueler tanker
1945 CCKW open cab cargo w/artic cab
1942 Chev cargo
1942 Chev K51 Panel
1944 Chev M6 Bomb Truck
1942 GPW Jeep
http://home.comcast.net/~cckw/wsb/html/ ... 59870.html
daveyboy
First Lieutenant
First Lieutenant
Posts: 66
Joined: Mon Jun 04, 2007 3:09 pm
Location: Plano, TEXAS

Post by daveyboy »

well, I was thinking.

I have a chevy (only two axles to contend with) and since I only drive it on paved roads, heck, just fiting the rear end would be easy, IF I can find a civilian application to start looking too!

I seen somehwer the 47 chevy 1.5 civilians had 5.43 gearing.

I alos noticed that a site that has old truck on line manuals that the army made a 1941 4x2 model truck?

These had optional 5.43 gear sets.

http://chevy.tocmp.com/military/1942/index.htm

so, hummmm..
Post Reply