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Type: Posts; User: Frosty

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    sure it is possible. That is why I'm suspecting...

    sure it is possible. That is why I'm suspecting this rear diff. is causing my high RPMs.
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    Need help with Rear Diff.....

    I have a 2004 Silverado, 4.8L V8 and 5-speed tranny. Original 4.3 V6 was swapped out. The truck runs and drives fine but ... in 5th gear and cruising at 50 mph the tack says 2000 RPM! (at 65 mpg...
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    2004" Silverado Are My RPM's Correct??

    Hi, I just bought a nice 2004 Silverado 2WD with 4.8L and 5-speed manual. It has stock 235 x 75 R16 tires and a 3.42 rear diff. The engine RPMs seem high to me in 5th gear as follows:

    50 mph ...
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