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Only 23 mpg with my '02 M6???

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Old 04-11-2005, 11:06 PM
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Originally Posted by 383ss
I've got 400 miles on a tank on 2 different road trips which was about 25 to 26mpg.

this is in my 382 stroker with all the bolt-on's, M6 and 3.42 10-bolt. I'm pretty happy with it <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> , 457rwhp/448rwtq.
Around town I usually get around 18-19.

48000 miles now
383SS, what size injectors are you running?

Also, does the guy with the poor mpgs have speaker boxes to tool boxes int he back? weight and tire pressure affect mpg bigtime! For what its worth, my 383 IROC got better gas mileage than my 94 3.4 V6.

David
Old 04-11-2005, 11:50 PM
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i average a little over 20mpg on the highway going ~70 with heads/cam/true duals/3.42s

i think 70 is about 2250 rpm and 75 is about 2500rpm
Old 04-12-2005, 05:43 PM
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My bolt on car with 410 12 bolt cant get 20 mpg .




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