What are some things you can do to make a 1979 Chevy Blazer 350 4-barrel get better gas mileage?

Wiki User

2007-11-22 19:02:18

Outside of replacing the vehicle, there is not really much you can do. Keep it tuned up, and regular oil changes. These things are notorious for drinking gas. Even new ones. If it has a Quad-Jet Carb-Replace it with an Carter\AFB - Change Camshaft(check with your camshaft dealer 4 correct applacation)---Put in a Lower rear Gear(for the Highway) A GOOD Distributor with a HOT Coil.etc. ANSWER You can install an overdrive transmission. A 700R4 is a very common transmission swap. Your engine will drop 1000 RPMs at speeds above 40. And it has a lower 1st gear, so you use a lower throttle opening when excelerating from a stop. If the truck is a 4X4, you can also swap the transfer case to a NP208C, which is a lot lighter.

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