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Propane Conversion 140 140-160

Bob
I have a modified 71 142E and on highspeed freeway driving (70-80 mph) I get 23 mpg. With more city driving mixed in, it only drops to 20 mpg. But I drive it real hard, always, striving to keep the rpm's in the 7001 street cam power band. Also I lightened the flywheel, so I lost some milage there.
When the motor was stock, 28 mpg on the highway was easy even with the origional 4:30 rear end ( I now am running a 4:10)
Do you think some of the milage variations experienced by different drivers is relative to their rear end gear ratio?

Joel G
--
Antique Swedish Steel (Never Rusty)






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