Engine/Transmission (1994 - 1998) 37" tires + 4.10 ratio + NVG4500HD

[KEENO]

Is anyone out there in "P7100/12 valve-land" running 37" diameter tires (or Bigger) w/ 4. 10 ratios thru a NVG4500HD?



If so... . How is your performance & fuel Mileage?



I'm torn between Dana axles (D60 / D80) w/ the 4. 10 ratio or Dana 60 / 14 Bolt w/ 4. 56 Ratio w/ 37" diameter tires for my P7100/NVG Cummins powered project.



My gut tells me that the 4. 10 are the correct compromise for performance & high mileage vs the 4. 56's.



My 3. 54 equipped First Gen turns it's 35" BFG A/T's just fine in most conditions.



Any opinions on this topic... ... ... ... ... ... .



KEENO

 

[bluthndr]

40" tires, 3.54 auto

Not sure if this helps, but even my 160 hp (stock) pump will pull my truck at 70-75 mph in O/D - even with my steep rear gears and my bigger tires...



I'd say you've nothing to worry about.

 

[KEENO]

Thanks for the info Bluthndr!



Anyone Else running Big Tires & 4. 10 gears?



KEENO

 

[HEMI®Dart]

36" Denman Coyote's w/ 3. 54's & NV4500. Performance good. Fuel mileage good too. I start out in low as opposed to 1st to be easy on the clutch. The engine has plenty of low end to get em rollin. I usally cant' go to 5th gear untill about 50-55 MPH.

 

[SS]

Opted for 4.10's...

KEENO,



I am in 24 valve land here, but here's my experience with the 4. 10's and 36" Coyotes: I'm always looking for 7th gear!



The overdrive ratio is close (0. 73 for NV5600 and 0. 75 for NV4500), so it should be comparable to what you are looking at. I love the truck the way it is, but if I had it to do over I think I would order 3. 54's and add more power instead.



Performance with the EZ is good and I get around 17. 5 MPG driving it like a 17 year old kid. Good luck with your project whatever you decide.