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Home > Products > Clutch Drums

Clutch Drums




205646 - 10 Clutch Drum and Hub
  ATI's aluminum drums are made of treated T-6 aircraft aluminum, eliminating the need for steel bushings and sleeves that can expand under heat and come loose, ultimately causing transmission failure.
Equipped with Torrington bearings
Triples clutch life
Lowers ET

The Aluminum Advantage!
Remember! The forward drum rotates at engine RPM at all times. The direct drum goes from spinning twice engine RPM in low gear to stopped on the 1-2 gear change and stopped to engine RPM on the 2-3 gear change. Aluminum weighs one-third the weight of steel. The
weight difference is a performance must...less abusive on the sprag and enhances clutch life greatly.
 


Powerglide Clutch Drums
Drum Material Description Weight Part Number Price
ALUMINUM
ALUMINUM
ALUMINUM
ALUMINUM
ALUMINUM
DRUM WITH BEARING - NO PISTON
ASSEMBLY, 5 CLUTCHES INSTALLED - NO CLUTCH HUB
ASSEMBLY, 6 CLUTCHES INSTALLED - NO CLUTCH HUB
ASSEMBLY, 7 CLUTCHES INSTALLED - NO CLUTCH HUB
ASSEMBLY, 10 CLUTCHES & HUB - 19 SPL/PG
--
5.22 LBS
5.24 LBS
5.25 LBS
6.94 LBS
205660
205650
205651
205652
205655
$209.00
$299.00
$299.00
$309.00
$349.00
STEEL
STEEL
STEEL
STEEL
STEEL
STEEL
STEEL
ASSEMBLY, 7 CLUTCHES
ASSEMBLY, 5 CLUTCHES
ASSEMBLY, 6 CLUTCHES
ASSEMBLY, 7 CLUTCHES
ASSEMBLY, 10 CLUTCHES
ASSEMBLY, 10 CLUTCHES (SUPERKIT)
ASSEMBLY, 10 CLUTCHES FOR SUPERGLIDE 4 - 27 SPLINE
6.10 LBS
8.46 LBS
8.50 LBS
8.86 LBS
9.80 LBS
10.08 LBS
--
207015
205640
205641
205642
205645
205646
205647
$94.00
$149.00
$149.00
$169.00
$399.00
$539.00
$599.00

Powerglide Clutch Drum Pistons
Description
Part Number
Price
PISTON - HIGH GEAR - .840 TALL - 5 CLUTCHES IN OEM DRUM
PISTON - HIGH GEAR - .765 TALL - 7 CLUTCHES IN OEM DRUM
PISTON - HIGH GEAR - .795 TALL - 5 CLUTCHES IN ALUM DRUM
PISTON - HIGH GEAR - .690 TALL - 6 - 8 CLUTCHES IN ALUM DRUM
205680
205690
205700
205701
$39.00
$39.00
$39.00
$39.00



  Aluminum Clutch Drums

ATI has developed a new Aluminum Clutch Drum with a steel insert for use in Powerglide transmissions. This new steel insert accepts the OEM bushing and will eliminate wear on the bushing surface inside the drum and oil ring diameter to the stator support. These areas could be damaged by racers selecting neutral and shutting the engine down in excess of 8000 rpm at the end of the track. When the engine stops turning, so does the trans pump which cuts off oil fl ow to the transmission.

Remember, the drum accelerates from stop to engine rpm on the gear change. Because an aluminum drum is 1/3 the weight of steel, it has less mass to accelerate thus extending clutch life. This new drum improves performance in Competition Stock and Super Stock cars, especially when using a lower 1st gear. It is also valuable for high HP cars that leave the starting line at or below 4000 rpm on the brake.
 


TH350 Aluminum Forward Drum
Recommended for Stock and Super Stock racers, this new drum enhances engine acceleration, improves clutch life and
lowers ET. Weighing a mere 2.38 lbs, the drum can be used with both OEM and Heavy Duty input shafts with either a Turbo
or PG spline. Must be installed by a qualified shop!

Drum Material Description Part Number Price
ALUMINUM
ALUMINUM
BILLET FORWARD DRUM - Price is for drum only. Must have input installed.
FORWARD DRUM - INCLUDES 300M TURBO SPLINE SHAFT FOR 600 TO 850HP
355252
355270
$525.00
$795.00


TH350 Clutch Drums

Drum Material Description
Part Number
Price
ALUMINUM

STEEL
STEEL
STEEL
STEEL
DIRECT, HD 36 ELEMENT SPRAG FOR HIGH HP*

FORWARD W/300M TURBO SPLINE SHAFT
FORWARD W/300M PG SPLINE
FORWARD - LIGHTENED
DIRECT, HD 36 ELEMENT SPRAG FOR HIGH HP
355702

355259
355260
355169
355682
$599.00

$225.00
$219.00
$155.31
$329.00
* The most common OEM part to break

T400 “Severe Duty” 36 Element Aluminum Direct Drum #407056
$949.00

  • Lightweight aluminum drum holds up to 6 direct clutches with .060 steels
  • 36 element intermediate sprag
  • ATI manufactured outer race, machined to accept OEM T400 clutches
  • Custom machined pressure plate and snap rings included
  • Will accept 6 intermediate clutches with thin steels
  • Steel sleeve for added support
  • Includes Heavy Duty Center Support (#405471) and a 4 Clutch Intermediate Pack (#405430)*
  • Full one year warranty against sprag failure when installed in an ATI built transmission!
 


Also available:

3 CLUTCH INTERMEDIATE PACK
405420
$36.95
5 CLUTCH INTERMEDIATE PACK 405431 $76.95
6 CLUTCH INTERMEDIATE PACK 405432 $91.95




T400 / 4L85E “Severe Duty” 36 Element Aluminum Direct Drum #407059
$895.00

  • Lightweight aluminum drum with steel sleeve
  • 36 element intermediate sprag
  • Comes with 8 direct and 5 intermediate clutches
  • ATI manufactured outer race, machined to accept OEM T400 clutches
  • Custom machined pressure plate and snap rings included
  • Full one year warranty against sprag failure when installed in an ATI built transmission!
 


T400 2-Speed “Severe Duty” Kit #407057
$1295.00

For high horsepower and ultimate 2-speed performance! Designed for high pressure applications, ATI's newest “severe duty” drum holds up to 8 direct clutches and features a billet aluminum center support and a steel insert for Teflon rings. Improves venting for quicker apply and release.

  • Complete drum with 36 element sprag
  • 8 Clutches and Steels
  • Steel insert for Teflon rings
  • Billet aluminum center support
  • Teflon Rings Included
  • Billet Aluminum Clutch Eliminator
 





TH400 High Gear Direct Drums
Steel Direct Drums Part Number Price
5 CLUTCH DIRECT, HIGH-LUBE PISTON, HD SNAP RING, 34 ELEMENT SPRAG INNER RACE AND LIP SEALS 405680 $394.14
DIRECT, WITH HD SPRAG, HD SNAP RING,34 ELEMENT SPRAG & INNER RACE 405681 $362.61

Aluminum Direct Drums Clutches & Steels Installed with High Lube Piston, Teflon Pump Rings, 34 Element Sprag & Race

5 CLUTCH - OEM CAST HIGH-LUBE PISTON 405723 $629.00
6 CLUTCH - BILLET ALUM HIGH-LUBE PISTON 405724 $649.00

Aluminum Direct Drums with Piston, Teflon Pump Rings, 34 Element Sprag and Race

5 CLUTCH 405721 $599.00
6 CLUTCH 405722 $599.00

Aluminum Direct Drums with Piston, Teflon Pump Rings and Inner Race Only

5 CLUTCH 405711 $549.00
6 CLUTCH 405712 $549.00


Thrust Washers
Application
Description Part Number Price
TF727 THRUST WASHER FOR FORWARD DRUM (.061) 725265 $2.89
T400 BRASS THRUST WASHER - FWD DRUM TO FWD CLUTCH HUB 405053 $4.99
 
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