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davidmbrady · 06-27-2012, 02:09 AM

Thanks Steve,

That'll make quite a difference in fuel mileage. For instance, at 65 mph my engine's spinning at 1630 rpm whereas yours would be spinning at (4.3/4.78)*1630 = 1466 rpm. That'll save some fuel. In fact, I'd bet that it'll save about the same percentage of fuel, so while I get 7.2 mpg at 65 mph on the flat and level with no wind, you should get 8.00 mpg. That's a savings of about a nickel per mile, so a $4000 final drive swap will take 80,000 miles to recover. That's at $3.50 per gallon. Or, I could just buy a Newell!

David Brady
'02 Blue Bird, Wanderlodge, LXi
Series 60
NC

06-27-2012, 02:09 AM	#14
davidmbrady Member Join Date: Jan 2008 Posts: 39	Thanks Steve, That'll make quite a difference in fuel mileage. For instance, at 65 mph my engine's spinning at 1630 rpm whereas yours would be spinning at (4.3/4.78)*1630 = 1466 rpm. That'll save some fuel. In fact, I'd bet that it'll save about the same percentage of fuel, so while I get 7.2 mpg at 65 mph on the flat and level with no wind, you should get 8.00 mpg. That's a savings of about a nickel per mile, so a $4000 final drive swap will take 80,000 miles to recover. That's at $3.50 per gallon. Or, I could just buy a Newell! David Brady '02 Blue Bird, Wanderlodge, LXi Series 60 NC