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Thread: Is it worth changing gears for better MPG's???

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  1. #1
    Join Date
    Jan 2001
    Location
    New Hampshire - Live Free or Die
    Posts
    6,059

    Default

    There was only one trans in '93 for the 6.5. Don't know if the 6.2 was the same or not. Chances are your alternator was swaped and has the wrong pulley. This throws the tach off. 4000 RPM is above the governor set point.
    The Constitution needs to be re-read, not re-written!

    If you can't handle Dr. Seuss, how will you handle real life?

    Current oil burners: MB GLK250 BlueTEC, John Deere X758
    New ride: MB GLS450 - most stately
    Gone but not forgotten: '87 F350 7.3, '93 C2500 6.5, '95 K2500 6.5, '06 K2500HD 6.6, '90 MB 350SDL, Kubota 7510

  2. #2
    Join Date
    Sep 2007
    Location
    Jax Florida
    Posts
    415

    Default

    Has anyone ever replaced the stock 5 spd with a 6 spd?
    93 GMC Sierra 2500
    6.5L TD 5 spd Manual trans Sold

    97 Chevy Silverado CrewCab K3500 Dually
    6.5L TD Auto


  3. #3
    Join Date
    Nov 2006
    Location
    Kelowna, BC
    Posts
    1,070

    Default Tranny

    I know a few people who have swapped the trannys. The Dodge trucks have the NV5600's which is the 6-speed. I think one of the biggest things would be finding out if the bellhousing from the 4500 will bolt onto the 5600.
    1993 HD2500- 4X4, Nv4500, rc/lb, Lots of mods, killed her. Awaiting her TT rebuild!

    2002 Camaro L36/M49- Killed In Action

    1995 HD2500 - 4X4, NV4500 rc/lb, GL4, Turbo, exhaust

    1994 HD2500- 4X4, NV4500, ec/lb

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