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Gas mileage with 373 gears with 6 speed trans

This is a discussion on Gas mileage with 373 gears with 6 speed trans within the Manual Transmission forums, part of the Drivetrain category; With the stock engine and minor bolt ons like exhaust and headers. What mpg do you guys get with 373 ...

  1. #1
    Member importssuck's Avatar
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    Gas mileage with 373 gears with 6 speed trans

    With the stock engine and minor bolt ons like exhaust and headers. What mpg do you guys get with 373 gears with the 6 speed manual trans? Was there a big loss from 342 to 373?

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    Member NavdeepWS6's Avatar
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    Dont know yet but it isnt that much

    well i just had my gears changed for 3.42 to 3.73 and i havnt noticed that big of a difference in gas milieage drop but it is there i run about 500 rpm higher so 6th gear im at 2k rpm going 65-70 i still get close to 20 mpg ithink

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    pewter
    2001 z28 lingenfelter 383

    http://www.f-body.org/gears/


    in 6th at 70mph its only 100 rpms more with the 373s

    i would imagine this wouild only affect your milage by 1 or 2 mpg highway .....so 26/27 vs 28

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    Member NavdeepWS6's Avatar
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    really cuz i cant tell right now cuz i run my car at 2k going with traffic i might be wrong speedo is off and they said programmer wont take my computer might be a wire messed up or something they said dont have money to fix right now

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    Member cuzimoto's Avatar
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    I have that set up and get 25-28 highway 16-18 regular. 99M6, tr224, LS6, LT, & 150 wet kit.

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