Isuzu NPR rear axle tech - Pirate4x4.Com : 4x4 and Off-Road Forum

Independent4x · 09-10-2003, 11:09 AM

ok let's gather tech on the NPR rear axle. this is the BIG Full FLoat reat 3rd membered axle isuzu uses in the box truck.

the interesting thing here is that the stock ratios are 4.10 and 5.38

YES....5.38.......

so you could pair one of these bad boys with a front 60 w/ 5.38's

here are some specs:

Rear Axle:
-Capacity 11,020 lbs.
-Ratio 4.10/5.375 (STD/AT)

Please add more.

cruiserbrett · 09-10-2003, 03:21 PM

They are big(hang up on rocks big), use a wierd six? lug pattern(also huge-MUCH bigger than a standard 6 or 8 lug 1 ton pattern and the hubs appear to be much to big to turn down in dia. to allow for a more normal sized wheel to fit) and are generally much too heavy for use on something of a DD/trail truck.

fiestaxr4 · 03-30-2008, 08:18 PM

Do you know a source for these axle gears ?

I am in Australia and trying to improve highway cruising for my NPR light truck which i think has a 5.57??????.

rodeored · 03-30-2008, 08:25 PM

i have no clue but

wow! 5 years old thread!

fiestaxr4 · 03-30-2008, 08:51 PM

Finding this sort of information is really hard - I'll give anything a try!

rodeored · 03-31-2008, 05:51 AM

i remembered this thread from a while back - try joining this board, and pm the guy who was working on this truck he may know something

http://bb.tennesseeoffroad.com/cgi-b...4;t=000156;p=1

09-10-2003, 11:09 AM	#1 (permalink)
Independent4x technical expert Join Date: Dec 2001 Member # 8755 Location: Richmond, Va Posts: 2,188	Isuzu NPR rear axle tech ok let's gather tech on the NPR rear axle. this is the BIG Full FLoat reat 3rd membered axle isuzu uses in the box truck. the interesting thing here is that the stock ratios are 4.10 and 5.38 YES....5.38....... so you could pair one of these bad boys with a front 60 w/ 5.38's here are some specs: Rear Axle: -Capacity 11,020 lbs. -Ratio 4.10/5.375 (STD/AT) Please add more. __________________ Matt, Owner: Independent4x www.independent4x.com 804-550-0480: 9am-6pm EST UFWDA Life Member - http://www.ufwda.org/ Full Service Fabrication Shop & Retail Store located in Richmond, Va. for all your OffRoad needs: featuring Sway-A-Way, WARN, ARB/OME, AEV, Advance Adapters, TeraFlex, Trailready, Currie, QA1, Beard Seats, Interco Tire, D.O.M. Tube to length, etc. - call or PM

09-10-2003, 03:21 PM	#2 (permalink)
cruiserbrett Registered User Join Date: Sep 2001 Member # 6863 Location: San Diego Posts: 2,797	They are big(hang up on rocks big), use a wierd six? lug pattern(also huge-MUCH bigger than a standard 6 or 8 lug 1 ton pattern and the hubs appear to be much to big to turn down in dia. to allow for a more normal sized wheel to fit) and are generally much too heavy for use on something of a DD/trail truck. __________________ I have enough projects for the next decade. Need two?

03-30-2008, 08:25 PM	#4 (permalink)
rodeored Registered User Join Date: Jan 2006 Member # 66354 Location: montreal, canada Posts: 77	i have no clue but wow! 5 years old thread! __________________ 1999 'Zu Rodeo - 8" lift, 4.77, Aussie locker, 33" Trxus, 8K winch, dents and scratches

03-31-2008, 05:51 AM	#6 (permalink)
rodeored Registered User Join Date: Jan 2006 Member # 66354 Location: montreal, canada Posts: 77	i remembered this thread from a while back - try joining this board, and pm the guy who was working on this truck he may know something http://bb.tennesseeoffroad.com/cgi-b...4;t=000156;p=1 __________________ 1999 'Zu Rodeo - 8" lift, 4.77, Aussie locker, 33" Trxus, 8K winch, dents and scratches

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03-30-2008, 08:18 PM	#3 (permalink)
fiestaxr4 Registered User Join Date: Mar 2008 Member # 111735 Posts: 2	Do you know a source for these axle gears ? I am in Australia and trying to improve highway cruising for my NPR light truck which i think has a 5.57??????.

03-30-2008, 08:51 PM	#5 (permalink)
fiestaxr4 Registered User Join Date: Mar 2008 Member # 111735 Posts: 2	Finding this sort of information is really hard - I'll give anything a try!