Where a good place to get some 4.10 for a 4x4 97 f150

 

Try going to the dealer and asking to see a Ford Racing catalog. I got my 4.10 gears out of there and they were the cheapest I found at the time (it was 5 years ago) I also worked at the dealership, but we did not get discounts from the catalog.

 

Package Dimensions: 5.50H x 11.50W x 15.50D
Weight: 20.00#
Catalog Page: N/A
Instruction Sheet: Click here to view the parts instruction sheet.
Warranty Available: No

M-4209-G456*
PART NUMBER RATIO AXLE
MUSTANG/RANGER/F-150 8.8"
M-4209-F308* 3.08:1 -
M-4209-F327* 3.27:1 -
M-4209-G355A* 3.55:1 -
M-4209-F373N* 3.73:1 ³ -
M-4209-G410A* 4.10:1 -
M-4209-G430M* 4.30:1 -
M-4209-G456* 4.56:1 -
M-4209-G488* 4.88:1 -
M-4209-G513* 5.13:1 ¹ -
MUSTANG/RANGER 7.5"
M-4209-L345* 3.45:1 -
M-4209-L373M* 3.73:1 -
M-4209-L410N* 4.10:1 -
5.4L F-150, EXPEDITION, NAVIGATOR, F-250/350 ²
M-3410-L410* 4.10:1 8.8" (front) 1996-97
M-4209-H373* 3.73:1 9.75" (rear)
M-3410-L373* 3.73:1 8.8" (front)
M-4209-J410* 4.10:1 9.75" (rear)
M-4209-J456* 4.56:1 9.75" (rear)
M-4209-K410* 4.10:1 10.25" (rear)
M-4209-K456* 4.56:1 10.25" (rear)

NOTES:
¹ May require rear cover modifications.
² These ring and pinions have been developed to increase towing capability of 5.4L Expeditions.
³ Replaces our popular M-4209-F373. New manufacturing technology utilizing a Face Hob Process which features a single pass pinion tooth machining operation compared to a conventional three pass process for machining. CNC cut and lapped gear teeth. Higher strength and better quality gears are produced with the Face Hob Process. NOTE: These new gears look a little different, the gear teeth are cut on a different angle and the ring gear has a bevel on the back of the gear.

 

I only got one more question what rpm do u run with 4.10 and what rpmwith 4.56 at 70mph with 35/12.50r16

 

I will have a gently used set of Yukon 4.56 rear gears for a 9 3/4" rear for sale tomorrow (1.5 yrs. in truck and never off road). I have to use my truck to tow my Lightning so I am putting 3.73's back in. Let me know if you are interested.
I would have the front's also (8.8 diff.) but I am just dropping the drive shaft for now.

 

I just got my 4.56 Yukons not too long ago and im sittin at about 2000 rpm's at 70. Not too bad IMO.

 

www.eastcoastgearsupply.com If thats not the cheapest price you can find Call me 919-672-2705.

 

Thanks for all your help. I believe 4.10s should put it back in its power band. This website may help other people decide which one they need.

http://www.rocky-road.com/calculator.html

 

If I just change the back gears and not the front will it hurt anything if I don't use 4wd?

 

you should be fine doing just the rear but whatever you do...do not put it in 4WD!!!

 

I'm going to get the front one when I get a little extra cash.