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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#49476 08/25/2005 6:13 PM | Joined: May 2005 Posts: 7 Junior Member | | Junior Member Joined: May 2005 Posts: 7 | OK,I finally got my 58 1/2 ton on the road with a new 350 chevy engine. Still have original tranny and 3 on the tree and original rear end with no clue of its gear ratio, It is turning some major RPM'S going 40-45 MPH. does anyone know a good or compatible swap on the rear end that wouldn't require a lot of modification? any help would be appreciated. Thanks | | |
#49477 08/25/2005 6:20 PM | Joined: Oct 2003 Posts: 297 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2003 Posts: 297 | i'm sure not an expert but there are a lot of them on this website that will chime in here pretty quick but while you are waiting why don't you try the search mode. there is a ton of discussion on this type of swap. good luck.
54 3100 w/62 235 "Yosemite Sam"
Born a Jay Hawk, raised an Okie and resurrected in Texas!http://community.webshots.com/user/djed50
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#49478 08/25/2005 6:51 PM | Joined: Oct 2003 Posts: 445 Shop Shark | | Shop Shark Joined: Oct 2003 Posts: 445 |
dan-pa
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#49479 08/25/2005 9:16 PM | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The after market gears for the 55-59 are 3.38. They make a good setup because you don,t have to modify everything like when you change to a later rear end. They are expensive though. Also the 5speed o-drive trany ispretty easy to install. Get both & you can idle down the highway.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
#49480 08/25/2005 10:03 PM | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | if you've got stock gears they're 3.90, but you might have 4.10 which were what was used w/ overdrive for some reason - as Wrench sez the 3.38 would help lots, and there are a number of OD possibilities
Bill | | |
#49481 08/26/2005 12:29 AM | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | i have a 54/ 235 and a nova 2.73 and 5 speed and mine motors just fine even in 5th. i live in flat land, some hills but not big and it does alright. 2000 at 60. about 1200 at 35 mph. ron
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
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