Corvette Racing
Duntov Motor Co
Officially Licensed Manufacturer of the Corvette Grand Sport

CORVETTE PARTS

Duntov Motor Company, LLC

13906-C Denton Drive
Farmers Branch, TX 75234

Toll Free Order Line
(888) 581-3838

Phone (972) 243-3838

Fax (972) 243-3828

Sportscar Vintage Racing

Lake Forest Sportscars
Corvette Grand Sport
Duntov Motor Company

All of our 80-82 Dana Corvette differentials are shipped with new ring and pinion gearsets, new bearings, clutch packs and refurbished stub axles. As with our Eaton differentials, we offer REM coating on the gearsets as well as an option specific to racing applications. Our Dana 44 differentials are shipped with a rear cover gasket. If you order a rear cover for your 80-82, it will be shipped in a separate box.Of course we would like to have your old Dana differential core, and will pay you for it if its rebuildable. Our shipping boxes are designed to survive a round trip, so you can use it if you choose to send your old diff back to us.

80-82 Differentials

Differential

All of our 80-82 Dana Corvette differentials are shipped with new ring and pinion gearsets, new bearings and clutch packs. As with our Eaton differentials, we offer REM coating on the gearsets as well as an option specific to racing applications.

Our Dana 44 differentials are shipped with a rear cover gasket. If you order a rear cover for your 80-82, it will be shipped in a separate box.

Of course we would like to have your old Dana differential core, and will pay you a lot for it if its rebuildable. Our shipping boxes are designed to survive a round trip, so you can use it if you choose to send your old diff back to us.

Note: UPS won't let us fill them with oil, so they are shipped with NO OIL.

Remember, No Core Charge, and No Freight
Note: PLEASE SPECIFY MODEL YEAR!

D800
3.07 80-82 Corvette Differential - $1449
D801
3.31 80-82 Corvette Differential - $1526
D802
3.54 80-82 Corvette Differential - $1326
D803
3.73 80-82 Corvette Differential - $1326
D804
4.11 80-82 Corvette Differential - $1326
D805
4.33 80-82 Corvette Differential - $1399
D806
4.56 80-82 Corvette Differential - $1399
D807
5.13 80-82 Corvette Differential - $1599

Differential Options

REM
Before REM Treatment After REM Treatment  

We recommend REM treating the ring and pinion. REM treatment is a physicochemical process that utilizes high density, non abrasive ceramic media and vibratory finishing equipment. REM treatment removes microscopic surface imperfections that are inherent in any machining process. The resultant part looks as if it is chrome plated, but nothing is added to the part’s surface. The gears run cooler and last longer.

D808
ring and pinionAdd for REM Coated Ring and Pinion
add for $165
D809
differentialAdd for
New 80-82 Dana Stub Axles

add for $219
Trans
Year
D810
Add for High Performance Application
This setup is good for up to 500 HP, if you need a stronger rear end please call us so we can provide a custom differential to fit your application

Includes:
•  REM coated ring & pinion
•  ARP Ring Gear Bolts
•  New Pinion Flange
•  Racing Set-up Specs

add for $895
80-82 Corvette Differencial Core Values
There is no core charge! If you want to send back your old differential in the fine box we send your new one in, this is the guide we will use to determine its value. When we get your core, we will disassemble, inspect and pay you for everything in there that is good enough to use in one of our differentials.
Case with No Flange
 
$80
Pinion Flange
 
$20
Sub Axles (pair)*
 
$60
Posi Carrier
 
$100
Good Reusable Ring and Pinion Sets
 
$50
 
Total
$310
* we don't reuse stub axles, but they have core value, so we will pay you and pass them on.

Eaton Diff for your 80-82 Corvette

Differential

We can't make the aluminum case Dana differential as tough as the iron case Eaton that came in the 65-79's. The Eaton carrier is just way stronger, and the ring and pinion is designed to handle much more power. If you are thinking about putting big horsepower in your 80-82, this may be your best choice. This part number includes everything you need to switch from the Dana to the Eaton but the Eaton differential itself. You keep your Dana batwing / rear cover. You can select an Eaton differential from either the 63-79 Differential page or the Racing Corvette Parts, Engine and Driveline page. Send us your old Dana differential, half shaft assemblies and spindle flanges, and we will buy them as cores.

Remember, this does not include the differential, which you need to buy separately. You keep your batwing - it does not come in the kit. You will get a gasket with the differential and the proper bolts to secure the differential to your batwing. We will provide a transition U-Joint to go between your stock driveshaft and your new pinion yoke. If you have a non-standard driveshaft U-joint, let us know!
Free Freight

D812
80-82 Eaton Differential Conversion Kit
$695
posi carrierNew Dana Steel Clutch Pack

There are no conventional springs with a Dana Clutch Pack. The preload comes from a convex Bellview spring, which is included in this set. Installing this clutch pack and spring without the right tools is no picnic. Call us and we will talk you through it.
Free Freight
D820
New Dana Steel Clutch Pack
$89

pinion gear setsNew Dana Stub Axles

These are priced each, and there are four different stub axles depending on whether your car came with an automatic or manual transmission, and whether you want the driver's side (short) or the passenger side (long). Please specify!

Free Freight

D830
New Dana Stub Axles
$289
Trans
Year
Position

overhaul kitDana Differential Overhaul Kit
This kit is designed for all Dana 44 applications, including the 80-82 Corvette. It includes bearings, seals, shims, LocTite, pattern paint, ring gear bolts and a gasket. There are a few extra parts in the kit (not shown), but rest assured, they are included at no extra charge! To help you figure out the puzzle, clink on the link below for an exploded view of the 80-82 Corvette Dana differential. Free Freight

D840
Dana Differential Overhaul Kit
$199

pinion flange80-82 Dana Corvette Pinion Flange

These don't often need replacing, but occasionally the seal will cut a groove in it and you will have to get a new one.

Free Freight
D850
80-82 Dana Corvette Pinion Flange
$112
pinion flangesNew Dana Ring and Pinion Gear Sets

Your Corvette came with a 3 series carrier. It may have come with 2.72 or 2.87 gears. Those gear sets are no longer available for the 80-82 Corvette. You can choose from 10 different ratios that are available, from 3.07 to 5.13. If you want your gearset REM coated, click that option and add a week to the delivery time.

Free Freight
D861
3.07 Ratio Ring and Pinion Set - $246
D862
3.31 Ratio Ring and Pinion Set - $398
D863
3.54 Ratio Ring and Pinion Set - $237
D864
3.73 Ratio Ring and Pinion Set - $219
D866
4.11 Ratio Ring and Pinion Set - $249
D868
4.56 Ratio Ring and Pinion Set - $249
D869
4.88 Ratio Ring and Pinion Set - $249
D872
REM Coating add
add for $165
half shaft80-82 Dana Corvette Rear Cover

These are used GM covers, Part # 14008656, with new Poly Bushings. They are shipped with a gasket and fill plug.
Free Freight
D874
80-82 Dana Corvette Rear Cover
$195
caliper bracket80-82 Corvette Half Shaft

These are reconditioned GM halfshafts. Select the one
that matches your application.
Free Freight
D880
80-81 Manual
All 82 Half Shaft

$127
D881
80-81 Automatic
$136
u joints80-82 Correct U Joints

These are the proper style Spicer U joints with no grease fitting,
sold in pairs.

Free Freight
D890

80-81 4 Speed Halfshaft
82 Halfshaft

$92
D892

80-82 Auto Halfshaft
80-81 4-Speed Driveshaft @ Front

$88
D894

80-82 Auto Driveshaft
80-81 4-Speed Driveshaft @ Rear

$88
D896

80-81 4-Speed Driveshaft

$86
Gear LubeDifferential Gear Lube

We offer the GM petroleum based gear lube, which is specified by Eaton for use with their carbon fiber clutch pack. We also like Mobil One 75-90 gear lube because it reduces differential oil temperatures compared to the GM lube. The best oil we have ever tested is Royal Purple. It has a film strength second to none. We use it in our racecars. We refer to it as MPH oil, because it makes a difference in our top end speed.
Free Freight
D897
3 Liters of GM Lube plus Additive
$84
D898
3 Quarts of Mobil 1 Gear Lube
$74
D899
gear lube
3 Quarts of Royal Purple
Gear Lube

$89

Duntov Motor Company is the exclusive licensee for the continued production of the authentic original Corvette Grand Sport.  Duntov Motor Company is the exclusive licensee for the manufacturing and distribution of the updated street version of this famous car. We service what we sell. We also restore and service 1963-1982 Corvette race, street and performance cars using original and replacement parts including front and rear suspension, brake calipers, brake rotors, brake pads, both J-56 and stock brake caliper pistons, and Corvette stainless steel parking brake parts. We offer the finest original U.S. built Corvette spindles and GM stub axles, along with remanufactured Corvette differentials for both street and race cars. We build both new and rebuilt Corvette trailing arm assemblies for 1965-1982 Corvettes, and offer Corvette street and racing springs and both steel and composite leaf springs in a wide selection of spring rates. Check out our Corvette parts section for shocks, sway bars, upper and lower A-arms, Corvette ball joints, tie rod ends, pitman arms, idler arms, shocks and U-joints.

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