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  #1  
Old 12-22-2011, 02:52 PM
Raymond0609 Raymond0609 is offline
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Default my build sheet & question

Can anyone tell me what a corporate 9.25 LD stands for?





According to our records, your vehicle was equipped from the factory
with the following:

VIN 1B7HF16YXXS163984
Vehicle Description DODGE RAM 1500 PICKUP
Model Year 1999
Body Model BR 6 L 61

Sales Code: --- Description:
*R1 Premium Cloth 40/20/40 Bench Seat
-C3 Mist Gray
ADAP Light Group
AGG Sport Group
AJKP Convenience Group
AJPP Power Convenience Group
APAS Monotone Paint
ASPP SLT Decor Group
A05P 5.2L Engine(ELF)/4Sp Auto Trans(DGT)
BAUS 117 Amp Alternator
BCES 600 Amp Maintenance Free Battery
BGJS Pwr Disc/Drum Rr Anti-Lock Brakes
BKAS 11x2 Rear Drum Brakes
CBEP 40/20/40 Split Bench Seat
CGDS Front Height Adjust Shoulder Belts
CGWS Next Generation Front Air Bags**
CGZS Passenger Air Bag On/Off Switch
CHEP Deluxe Headliner
CKEP Front Seat Area Carpet
CLAP Front Floor Mats
CSPS Passenger Assist Handle
CSRP Passenger Assist Handles
CUDP Mini Overhead Console
CUVS Behind Seat Modular Storage System
CUYS Storage Tray
DGTS 4-Spd. Automatic 46RE Transmission
DHAP Lock-Up Torque Converter
DHKS Shift-on-the-Fly,231HD Transfer Case
DJCS 195MM Front Axle
DMDP 3.55 Rear Axle Ratio
DRBP Corporate 9.25 LD Rear Axle
EAGC All Gas Engine
ELF 5.2L V8 MPI Engine
GACS Tinted Glass Windows
GBBS Tinted Windshield Glass
GCBS Front Door Tinted Glass
GJDS Rear Fixed Window
GNAS Rear View Day/Night Mirror
GNMP Passenger Side Sun Visor w/Mirror
GTSP Power Heated Mirrors, Fold-Away
HAAP Air Conditioning
HGAP Hood Insulation
HGBS Dash Liner Insulation
JAYP Instrument Cluster w/Tach
JCBS 120 MPH Primary Speedometer
JHAS Var Intermittent Windshield Wipers
JJAS Cigar Lighter
JJBS Dual Note Electric Horns
JJJS 12V Auxiliary Power Outlet
JPBP Power Locks
JPDP Power Windows, Driver One-Touch
KKAP STRIPE/BADGE/MOLDING/COLOR
KRAS STRIPE/BADGE/MOLDING/COLOR
KTAS STRIPE/BADGE/MOLDING/COLOR
KWAP STRIPE/BADGE/MOLDING/COLOR
LAAP Ignition Time Delay Lamp
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LMEP Halogen Quad Headlamps
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MBPP Body Color Front Bumper
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MWDS Removable Tailgate w/Caliper Latches
NAA Federal Emissions
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NFWS 26 Gallon Fuel Tank
NHMP Speed Control
PB3A Intense Blue Pearl Coat
QB3S Intense Blue Pearl Coat
RASS AM/FM Cassette Radio
RCDP 4 Speakers
RDDP Fixed Long Mast Antenna
SBAS Power Rack and Pinion Steering
SCVP Leather Wrapped Steering Wheel
SFBS Front Heavy Duty Shock Absorbers
SGBS Rear Heavy Duty Shock Absorbers
SHAS Front Stabilizer Bar
SUAP Tilt Steering Column
TBBS Full Size Spare Tire
TBMP Tire Carrier Winch
TXWP P265/75R16 OWL On/Off Road Tires
TZAP Goodyear Brand Tires
WDSP 16X7.0 Forged Aluminum Wheels
WLBP Steel Spare Wheel
WMLP Dodge Center Cap
XBSS Pickup Box
XCMS Vendor Painted Cargo Box
YAAS Build To U.S. Mkt. Specifications
YEP Manuf Statement of Origin
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  #2  
Old 12-22-2011, 03:45 PM
erm
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"corporate 9.25 LD" means:

Corporate = Dodge standard part

9.25 = 9.25" ring gear

LD = Light Duty Don't be put off by this.

Chrysler 9.25" Rear Semi Float Axle
Max Tire Diameter Recommended 35"
Ring Gear Size 9.25"
(12) #7 Ring Gear Bolts
1.3" dia axle shaft with 31 splines
Notes: This unit flrst appeared in 1969 era half ton trucks with V8's (small and big-block engines). It was even used in '70s muscle car applications and in the last of Chrysler's luxury tuna-boats into the early 1980s. This axle is unusual but cool and convenient in that it uses carrier bearings that are adjusted with hex adjusters reached through the axle tubes via a long tool. This can generally be considered to be a keeper in most half-ton applications, though the available lockers makes a fairly short list.
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  #3  
Old 12-22-2011, 04:11 PM
Raymond0609 Raymond0609 is offline
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So I take it is a good solid rear axle if it has that type of history. Anything I need to do to beef it up? I I will be testing its capabilities!!!!
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  #4  
Old 12-22-2011, 04:19 PM
erm
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It's pretty strong but when you say you will be testing its capabilities, just how severe will the test be?
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  #5  
Old 12-22-2011, 04:37 PM
wvcoolvinilla wvcoolvinilla is offline
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Maddog way to go on the history of our beloved 9 1/4". First time I ever saw one was on Mon and Dads new 1979 Plymouth Trail Duster. When I first peeked under there I said Dana 60? But on closer inspection it was not. When I was in the USAF we had trucks (1972) with 8 3/4". Any good source for a nice cover I bought a MOPAR Crome cover for my last one but it was a rust hogg after two years.
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  #6  
Old 12-22-2011, 05:16 PM
Raymond0609 Raymond0609 is offline
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I do alot of camping trails and if there is a mud hole well I'm going through it. So nothing extreme but I do like to hit the trails. Don't expect it will go like my old jeep wrangler. Im pretty sure it's stronger diffs than under a 99 jeep. So if it's not a dana 60 in the rear what is it? and how bout the front?
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  #7  
Old 12-22-2011, 10:45 PM
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Well I can tell you that a 9.25 in a '74 Monaco will hold up to fairly built 440.
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  #8  
Old 12-22-2011, 11:03 PM
erm
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It's equivalent to a Dana 44 is size but it is a different design. I've had a few MOPARs with this diff in them and they never let me down. Your nine and a quarter will do just fine on the trails. It is not geared low enough for rock crawling but it will hold up to off road work with no problem.
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Old 12-22-2011, 11:05 PM
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I will say you better have TOW HOOKS on the front
An open differential is a 1 wheel wonder, both rear wheels don't have traction, only the passenger side does
That being said, you can transfer some of the traction to the drivers side with just the correct amount of pressure on the brake pedal, working the correct amount of the brakes & the throttle at the same time, takes a bit of practice.
The second thing is your rear differential is a 3.55 ratio, more of a highway gear than off road. Trucks that off road a lot, would have 3.92s or 4.11s, some would have 4.56s or even 4.88s & above

You will never see an Open Differential going up Pikes Peak on any kind of test, you will see automatic & standard transmissions & every sized engine that was ever made. Every one of them will have some kind of Posi-Traction, Limited Slip, Locker, etc. rear ends
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  #10  
Old 12-22-2011, 11:08 PM
erm
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Quote:
Originally Posted by wvcoolvinilla View Post
Maddog way to go on the history of our beloved 9 1/4". First time I ever saw one was on Mon and Dads new 1979 Plymouth Trail Duster. When I first peeked under there I said Dana 60? But on closer inspection it was not. When I was in the USAF we had trucks (1972) with 8 3/4". Any good source for a nice cover I bought a MOPAR Crome cover for my last one but it was a rust hogg after two years.
If you want a nice cover that will last, I'd suggest a cast or billet machined cover. And forget about doing chrome in that application.

Look at Jegs, TopGun Customz, check with Clark here from autoanything, autotrucktoys.com, etc...

And if you want to get some payback on this expense, get one that has internal bracing and additional capacity with exterior extrusions that act as cooling fins.
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