Untypical MPG question

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Sep 4, 2005 | 12:37 AM

#21

Lowrider0308

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Joined: Aug 2004

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From: The South

Quote:

Originally Posted by jr's3800

Quote:

Originally Posted by Lowrider0308

Quote:

Originally Posted by 1993 SLE

Quote:

Originally Posted by Lowrider0308

I cruise 75 at about 2200-2300 RPM. I love my 2.84 gear ratio!

bah....at 70 i hit 1900-2000 rpms

yeah...sounds a little high. I know i run 1900-2000 at 60 though, 100% sure. I think you number might be a little low Pat.

Hey there, good to see ya again...

Your Tach is off boss... Trust me on that...

with the 2.84 gears you should be doing 1450 at about 55... and about 1800-1900 at 70-75.... I was blown away while I was watching my 91 with a scantool... I was doing 46 at 1350-1400rpms

Yes those Taller gears get a little better milage..

We did the math once for what the gearing was and what the engine RPM would be at 100 mph and I think we came up with 2900 Rpms

dang......................................

Sep 4, 2005 | 11:04 PM

#22

ofnarcr4

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Posts like a Supercharger

Joined: Jul 2005

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My 1990 eighty eight recently did 26 mpg while granny driving in the city. I could probally pull off 28 if i had control of 4th gear kick in. I might get 30 on the highway. I think its the nature of the beast and there is no stopping it but to drive slow.