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#65911 09/17/2006 7:38 PM | Joined: Feb 2003 Posts: 58 Shop Shark | | Shop Shark Joined: Feb 2003 Posts: 58 | I have a 1951 3/4 ton with 8 lugs that has the 4:10/1 gear ratio (I think) it is.
I also have a 1956 1/2 ton rear axle and front spindles.
Now the Questions, ..
1) What is the gear ratio in the 1956 axle?
2) Can I unbolt and replace the axle with the other without a major operation, and will the front spindles swap out the same?
I am sure someone out there has either done something simular, or given it a try.
Thanks in advance.
Collecting is fun, as long as momma enjoys riding in them.
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#65912 09/18/2006 9:21 PM | Joined: Apr 2005 Posts: 2,097 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 2,097 | The standard gear ratio for a 1/2 ton in 56 was 3:90 to one. That ratio was fairly standard from 55 through 59. If it came with an overdrive it probably had a 4:10.
1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
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#65913 09/18/2006 10:40 PM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | I think your 3/4 ton would be 4.56 stock.
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | |
#65914 09/20/2006 12:09 AM | Joined: May 2006 Posts: 12 New Guy | | New Guy Joined: May 2006 Posts: 12 | The 1956 rear from a 1/2 ton truck would be either a 390 or a 410.The 390 came with the 3 speed manual and the 410 with a 4 speed manual. | | |
#65915 09/20/2006 8:06 PM | Joined: Feb 2003 Posts: 58 Shop Shark | | Shop Shark Joined: Feb 2003 Posts: 58 | Well is it worth the effort to change it to the newer rear end and can the front spindles be changed to match, or is it even worth atempting?
Collecting is fun, as long as momma enjoys riding in them.
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#65916 09/20/2006 8:07 PM | Joined: Feb 2003 Posts: 58 Shop Shark | | Shop Shark Joined: Feb 2003 Posts: 58 | I do ,intend to change to a t-5 or a 700R tranny.
Collecting is fun, as long as momma enjoys riding in them.
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#65917 09/23/2006 5:09 PM | Joined: Apr 2005 Posts: 345 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 345 | Old CT Guy,
I recently installed a T5 (.72 OD) in front of a 4.10. I've only had it on the freeway once-I'm working on tightening up the steering now- but the combination seems good. I'm guessing that 2,000 rpm gets me to about 70 mph, which is as fast as I need to go in this truck.
My original differential was a 4.57, and changing to the 4.10 made quite a difference. | | |
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