Can You make a Sure Grip?

-
Daniel Pickar

Daniel Pickar

WYDuster
Joined
Jun 13, 2018
Messages
26
Reaction score
8
Location
Wyoming
I'm looking to put a 323 suregrip in my Duster. I talked to a junkyard nearby and doesn't have one set up but he does have a 323 open diff and suregrip unit he would sell me fore $350 but I would have to set it up myself. Is it really that easy or would I need to buy anything else?
 
R4Sedan said:
You haven't stated, do you have 8 3/4. $350 sounds pricey. Have you been on DR Diffs website
Click to expand...
Yes I currently have an 8 3/4 with 276 gears and an open diff. 741 case...with the smallest yoke. Nope I haven't been on DR's website I will check them out.
 
You can buy a SG unit and a ring and pinon of your liking. You will have a chunk of change right there. Plus you have to set it up or pay someone. Some people will tell you the 741 case is inferior, but it can withstand plenty.
I have a 489 and a 741 case.
 
On another note they come up for sale time to time. Or you can place a wanted ad for what your looking for.
 
I have put a lotta lotta street hurt on 741s and as long as you don't peg-leg it or run it outta EP oil, they'll keep going like the Energizer Bunny.
Any 8.75 Mopar SG will fit in any Mopar 8.75....... But IIRC the SGs take different side bearings than the opens. I know the track-loc does. So make sure you get the bearings with it just in case.
But for $350 he should give you the entire assembled Diff , cuz there is no demand for the rest of it. Maybe put another 10% on the table, and grab it all; save yourself the hassle of RnR-ing it.
If the ratio is different from what you currently have,that will skew your speed-O reading.
 
Last edited:
https://www.powertrax.com/product-info/

Learn more about PowerTrax

← Back to search
All categories > Lock Assembly > Rear Location
Lock Right Locker
1240_LR_v1-300x300.jpg

POWERTRAX_LOCKRIGHT_BOX-192x192.jpg

Powertrax® Lock-Right performance lockers’ straight-line performance is equal to a solid spool axle, yet they automatically unlock during turns. When extreme traction output and high-strength are required, racers, hot-rodders and muscle car owners chose Lock-Right lockers!
Best suited for extreme off-road to severe on-road use, Powertrax lockers replace the spider gears in your differential carrier without affecting your ring and pinion settings. The whole job can be done in your driveway with common hand tools in a couple of hours. A carrier is not included.

  • Brute Force Devices For Rugged Applications
  • Replacement Of Differential Case Not Required
  • Ring And Pinion Setup Not Altered
  • Installs Easily In Front/Rear Or Both
  • Proven In Most Demanding Applications
1240-LR Application Notes
  • For Chrysler 8.75" (489/741/742)
  • 30 Spline
  • For Open Differential
  • w/Removable Carrier
Warranty
2 Years or 100,000 Miles

1240-LR Specifications


Axle Shaft Diameter 1.28 (Inch)
Carrier Type Open
Differential Case Design Type Chrysler 8.75
Ring Gear Bolt Quantity 12
Spline Quantity 30
Taxonomy A Differential LD
Taxonomy B Differential Lockers & Spools
Taxonomy C Chrysler 8.75
Taxonomy D Drop-in Lockers
WHERE TO BUY
Vehicle Applications
  • 1957 – 1971 Chrysler 300
  • 1957 – 1973 Chrysler Imperial
  • 1957 – 1974 Chrysler New Yorker
  • 1957 – 1974 Chrysler Newport
  • 1957 – 1974 Chrysler Town & Country
  • 1964 – 1970 Dodge A100
  • 1964 – 1970 Dodge A100 Truck
  • 1971 – 1974 Dodge B100 Van
  • 1971 – 1974 Dodge B200 Van
  • 1970 – 1974 Dodge Challenger
  • 1966 – 1974 Dodge Charger
  • 1965 – 1973 Dodge Coronet
  • 1959 Dodge D100 Pickup
  • 1968 – 1974 Dodge D100 Pickup
  • 1960 – 1967 Dodge D100 Series
  • 1966 – 1972 Dodge Dart
  • 1965 – 1973 Dodge Monaco
  • 1964 Dodge P100 Van
  • 1967 – 1968 Dodge P100 Van
  • 1964 – 1970 Dodge P200
  • 1964 Dodge P200 Van
  • 1967 – 1968 Dodge P200 Van
  • 1962 – 1970 Dodge P300
  • 1964 Dodge P300 Van
  • 1966 – 1968 Dodge P300 Van
  • 1962 – 1973 Dodge Polara
  • 1969 – 1970 Dodge W100 Pickup
  • 1970 – 1974 Dodge W200 Pickup
  • 1964 – 1970 Fargo A100 Van
  • 1969 – 1972 Fargo D100 Pickup
  • 1969 – 1970 Fargo W100 Pickup
  • 1970 – 1972 Fargo W200 Pickup
  • 1965 – 1967 Humber Imperial
  • 1966 – 1974 Plymouth Barracuda
  • 1962 – 1974 Plymouth Fury
  • 1968 – 1974 Plymo
 
Installing a suregrip is super easy and if that junkyard 8-3/4 is in good shape and it's a clutch type suregrip (or a verified good cone type SG), $350 is a decent price for it. If that were near me I'd buy it and swap in the SG and flip it it for at least a $200 profit

If you decide to buy it I have a PDF file that details swapping in a spool. Swapping in a SG would be the exact same process. If you need it PM me and I'll send it to you
 
jazak5 said:
Product Info - PowerTrax

Learn more about PowerTrax

← Back to search
All categories > Lock Assembly > Rear Location
Lock Right Locker
View attachment 1715437099
View attachment 1715437100
Powertrax® Lock-Right performance lockers’ straight-line performance is equal to a solid spool axle, yet they automatically unlock during turns. When extreme traction output and high-strength are required, racers, hot-rodders and muscle car owners chose Lock-Right lockers!
Best suited for extreme off-road to severe on-road use, Powertrax lockers replace the spider gears in your differential carrier without affecting your ring and pinion settings. The whole job can be done in your driveway with common hand tools in a couple of hours. A carrier is not included.

  • Brute Force Devices For Rugged Applications
  • Replacement Of Differential Case Not Required
  • Ring And Pinion Setup Not Altered
  • Installs Easily In Front/Rear Or Both
  • Proven In Most Demanding Applications
1240-LR Application Notes
  • For Chrysler 8.75" (489/741/742)
  • 30 Spline
  • For Open Differential
  • w/Removable Carrier
Warranty
2 Years or 100,000 Miles

1240-LR Specifications


Axle Shaft Diameter 1.28 (Inch)
Carrier Type Open
Differential Case Design Type Chrysler 8.75
Ring Gear Bolt Quantity 12
Spline Quantity 30
Taxonomy A Differential LD
Taxonomy B Differential Lockers & Spools
Taxonomy C Chrysler 8.75
Taxonomy D Drop-in Lockers
WHERE TO BUY
Vehicle Applications
  • 1957 – 1971 Chrysler 300
  • 1957 – 1973 Chrysler Imperial
  • 1957 – 1974 Chrysler New Yorker
  • 1957 – 1974 Chrysler Newport
  • 1957 – 1974 Chrysler Town & Country
  • 1964 – 1970 Dodge A100
  • 1964 – 1970 Dodge A100 Truck
  • 1971 – 1974 Dodge B100 Van
  • 1971 – 1974 Dodge B200 Van
  • 1970 – 1974 Dodge Challenger
  • 1966 – 1974 Dodge Charger
  • 1965 – 1973 Dodge Coronet
  • 1959 Dodge D100 Pickup
  • 1968 – 1974 Dodge D100 Pickup
  • 1960 – 1967 Dodge D100 Series
  • 1966 – 1972 Dodge Dart
  • 1965 – 1973 Dodge Monaco
  • 1964 Dodge P100 Van
  • 1967 – 1968 Dodge P100 Van
  • 1964 – 1970 Dodge P200
  • 1964 Dodge P200 Van
  • 1967 – 1968 Dodge P200 Van
  • 1962 – 1970 Dodge P300
  • 1964 Dodge P300 Van
  • 1966 – 1968 Dodge P300 Van
  • 1962 – 1973 Dodge Polara
  • 1969 – 1970 Dodge W100 Pickup
  • 1970 – 1974 Dodge W200 Pickup
  • 1964 – 1970 Fargo A100 Van
  • 1969 – 1972 Fargo D100 Pickup
  • 1969 – 1970 Fargo W100 Pickup
  • 1970 – 1972 Fargo W200 Pickup
  • 1965 – 1967 Humber Imperial
  • 1966 – 1974 Plymouth Barracuda
  • 1962 – 1974 Plymouth Fury
  • 1968 – 1974 Plymo
Click to expand...
While those look good I researched and find they cost a little more than a brand new clutch type suregrip from Dr. Diff
 
You can buy the 3.23 open. Then all you need to install the sure grip into the 3.23 case is a dial indicator so you can set the backlash. The hard part, setting the pinion depth, has already been done. Is the sure grip used with bearings? Or talk to Dr Diff and get a new Sure Grip with bearings and swap that into your 3.23's.
 
You must log in or register to reply here.
-

Back
Top