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Old 04-01-2020, 12:11 PM   #22 (permalink)
aerohead
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40-45 mpg

Quote:
Originally Posted by Tahoe_Hybrid View Post
I'd really like to increase the MPG to 40-45MPG on this V8 6.0L Engine..


we had a 7mph tailwind the other day
it was reporting 40 to 45MPG on the instant gauge @ 60MPH steady speed..

flat land i think getting down to 0.28 from 0.34 will get me that 40ish at 60mph...

this is not about the MPG it's about improving the emissions output


that would cut the emissions output by 50% over EPA ratings

is it possible on a budget? say $200?


this would put my MPG right there with the Geo Metro
1.0L L3 GAS..



Hypermiling gets me about 31.5MPG (95% highway only) currently
On three occasions I've seen 39.9 mpg @ 60-mph,steady,interstate cruising,Texas to California and back .That's with 4,220-lbs all up weight, around 29-sq-ft frontal area,Cd 0.2675,and REGULAR UNLEADED.With a direct-injection turbo-diesel we'd be looking at 51.87 mpg at the same velocity.
The Tahoe is heavier and of larger frontal area.Your V-engine has higher internal friction.Your drive-line has higher internal friction.
In materials,$200 is quite reasonable,but you might be looking at 800-1200 man-hours in fabrication time to create a low enough drag,requiring the most difficult to achieve compound curves,everywhere.
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