Quote:
Originally Posted by pashiner
I've got plenty of top-end power at 70+mph, keeps up with traffic just fine...but is sorely lacking bottom end torque.
I'd like to keep fuel economy as good or better, and will explore aero-mods at a later date.
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Another approach is to change the transmission. The late model Chevrolet Colorado has a six speed manual transmission with a wide ratio range. First gear is 4.47:1 and sixth gear is 0.61:1. That's a 7.3:1 ratio range from first to sixth. Drop in that transmission and change the rear end to get the same total ratio as you have now.
You would have a lower first gear, so better ability to start out. And use your tach. It's OK to run it to near redline occasionally. My old Colorado had no trouble accelerating to speed on a short uphill onramp. I just needed to run it to redline in first and second gears, and speed shift.
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06 Canyon: The vacuum gauge plus wheel covers helped increase summer 2015 mileage to 38.5 MPG, while summer 2016 mileage was 38.6 MPG without the wheel covers. Drove 33,021 miles 2016-2018 at 35.00 MPG.
22 Maverick: Summer 2022 burned 62.74 gallons in 3145.1 miles for 50.1 MPG. Winter 2023-2024 - 2416.7 miles, 58.66 gallons for 41 MPG.
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