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If it's running rich you could nearly double the fuel economy.
When I got my 7.4L suburban it was getting 6.5mpg. The carb was running very rich. When I pulled the motor it was getting nearly 13mpg in mixed driving then between 16 and 18mpg on the highway. Most new suburbans don't even get 16.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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