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Super Damper® Harmonic Dampers


The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chevy engines.

  • Eliminates torsional crankshaft vibrations
  • Exceeds SFI 18.1 specs
  • Black zinc chromate finished
  • Tunable, rebuildable, and extremely efficient at ALL RPM
  • Laser engraved 360° timing marks

The ATI Serpentine Super Damper contains grooves for serpentine belts machined into the outer damper shell. The dampers come standard with 6 outer grooves for standard OEM drive systems. 8 & 10 grooves are available for supercharger or turbo applications. Serpentine dampers are available in a variety of diameters. Crank hubs may be fitted with a 6 groove serpentine pulley to drive external oil pumps or vehicle accessories.

The Serpentine Series dampers fit all ATI GM-front crank hubs and can be adapted to many engine combinations providing maximum flexibility. These dampers are available in steel or lightweight hard-coated aluminum and come with laser engraved 360° timing marks. Exceeds SFI 18.1 specs.
Chevy Super Damper
Sepentine Dampers
GM Y-Body
GM F-Body
Camaro Z-Body
GM B-Body LT1
 Cadillac CTS-V
Pontiac GTO
SSR & Trailblazer SS
Chevy Duramax Diesel
GM Ecotec		 Installation Instructions
Damper Installation Instructions
LS1/LS7 Damper Instructions
LS1 Crank Pin Drill Fixture Kit
Damper Accessories		 Accessories
 Installation Kits
 Crank Trigger Damper Shells
Additional Components
Timing Pointers



GM Y-Body Serpentine Dampers INCLUDES LS1, LS2, LS3, LS6, LS7 & LS9 - LT1, LT4 & LT5
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
(LBS)
SHELL MATERIAL
SHELL #
RIBS
RIB REAR A/C PULLEY #
HUB # [2]
HUB
MATERIAL
LS1
LS2
LS3
LS6
917246 [6]
7.53"
9.75 LBS
STEEL
917016CSX
6
916734
916032
STEEL
917266 [6]
7.53"
6.75 LBS
ALUM
917074CS
6
916734
916032
STEEL
917278 [1,5,6]
6.78" (10% UD)
4.5 LBS
ALUM
917071CS-44X
6
916732 (10% UD)
916032
STEEL
917279 [1,5,6]
6.78" (10% UD)
4.5 LBS
ALUM
917072CS-44
6
NO A/C
916032
STEEL
917247 [1,5,6]
6.78" (10% UD)
4.5 LBS
ALUM
917072CS-44
6
NO A/C
916036
ALUM
917248 [6]
7.53"
9.75 LBS
STEEL
917015CS
6
DRIVE ON HUB [4]
916033 (60% UD)
STEEL
917267 [6]
7.53"
6.75 LBS
ALUM
917073CS-44
6
DRIVE ON HUB [4]
916033 (60% UD)
STEEL
917218 [6]
7.53"
6.75 LBS
ALUM
917073CS-44
6
DRIVE ON HUB
916038 (60% UD)
ALUM
917249 [1, 6]
6.78" (10% UD)
4.5 LBS
ALUM
917071CS
6
DRIVE ON HUB [4]
916033 (60% UD)
STEEL
917219 [1, 6]
6.78" (10% UD)
4.5 LBS
ALUM
917071CS
6
DRIVE ON HUB
916038 (60% UD)
ALUM
918848 [3]
5.5" (25% UD)
ALUM
6
916184
916954
STEEL
918847
5.5" (25% UD)
ALUM
6
NO A/C
916954
STEEL
917289
6.78" (10% UD)
4.5 LBS
ALUM
917071CS
6
HTD 8MM x 28T
916033A
STEEL
917342C
7.53"
9.75 LBS
STEEL
917006
HTD 8MM x 74T
HTD 8MM x 28T
916033C
STEEL
LS7
918620
7.53"
6.7 LBS
ALUM
917049
8
4 RIB [11]
916058
STEEL
918620N
7.53"
6.7 LBS
ALUM
917049
8
NO A/C
916058
STEEL
918620U
6.78" (10% UD)
4.5 LBS
ALUM
917049U
8
4 RIB [11]
916058U
STEEL
918620UN
6.78" (10% UD)
4.5 LBS
ALUM
917049UN
8
NO A/C
916058U
STEEL
LS9 ZR1
918634
7.53"
6.7 LBS
ALUM
917097
8
6 RIB [11]
916107
STEEL
918624 [12]
8.36" (14% OD)
6.7 LBS
ALUM
917093
8
6 RIB [11]
916107
STEEL
LT1 LT4
[7] [10]
917274
7.53"
9.75 LBS
STEEL
917015
6
916096A [8] [9]
STEEL
917269
7.53"
6.75 LBS
ALUM
917073
6
916096A [8] [9]
STEEL
917275
6.78"
4.5 LBS
ALUM
91707144
6
916096A [8] [9]
STEEL
917273
6.78"
4.5 LBS
ALUM
91707144
6
916094
ALUM
LT5 - ZR1
917298
6.78"
4.5 LBS
ALUM
6
916101
STEEL

[1] Requires shorter serpentine belt. Goodyear pt #4060785 for accessories & 4040405 for AC.
[2] All hubs have 3/16 key @ std SB 10° location. Please note: 8 groove & 10 groove shell assemblies are available for supercharger applications. Consult your ATI salesman. #917017 (7 1/2” diameter, 8 groove, steel) #917018 (7 1/2” diameter, 10 groove, steel) #917075 (6 3/4” diameter, 8 groove, aluminum)
[3] Requires shorter belts: Gates #K060775 - 6 rib, #K040410 - 8 rib
[4] Use hub part # 916033A for integral 8mm 28 tooth HTD pulley.
[5] Contains 40 durometer rubber. Not for full race engines. Specify 66 rubber or call.
[6] Damper assemblies have all countersunk bolts so nothing protrudes past front of damper. If you have an older damper and are ordering a new shell assembly only, you must cut a .090” x 		  45° chamfer on the front of your hub. ATI can also perform this operation for $40 if you send your hub in.
[7] Dampers furnished with #916320 hub spacer. For ‘97 & up Camaro/Firebird or ‘96 & up Corvette engine with a reluctor wheel; discard spacer provided.
[8] For hubs with a 6 hole bolt pattern and 2.25 seal, use hub #916049B for B body, 916048B for F body and 916096B for Y body.
[9] Hubs are made of heat-treated alloy steel.
[10] Washer #953070 is required with LT1 hubs and is shipped with dampers.
 [11] Non-removable A/C pulley - OEM diameter.
[12] Contact Lingenfelter for proper belt set-up.


GM F-Body Serpentine Dampers INCLUDES LS1, LS2, LS3, LS6, & LS7 - LT1 & LT4
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
RIBS
4 RIB REAR A/C PULLEY #
HUB # [1]
HUB MATERIAL
LS1
917242
7.53"
9.75 LBS
STEEL
917015
6
916734
916031
STEEL
917264
7.53"
6.75 LBS
ALUM
917073
6
916734
916031
STEEL
917277 [3][4]
6.78" (10% UD)
4.5 LBS
ALUM
917071-44
6
NO A/C
916031
STEEL
917243 [3][4]
6.78" (10% UD)
4.5 LBS
ALUM
917071-44
6
NO A/C
916035
ALUM
917259
7.53"
9.75 LBS
STEEL
917015
6
DRIVE ON HUB
916037 (60% UD)
STEEL
917238
7.53"
6.75 LBS
ALUM
917073
6
DRIVE ON HUB
916037 (60% UD)
STEEL
917265
7.53"
6.75 LBS
ALUM
917073
6
DRIVE ON HUB
916034 (60% UD)
ALUM
917239
6.78" (10% UD)
4.5 LBS
ALUM
917071-44
6
DRIVE ON HUB
916037 (60% UD)
STEEL
917245
6.78" (10% UD)
4.5 LBS
ALUM
917071-44
6
DRIVE ON HUB
916034 (60% UD)
ALUM
918845 [6]
5.5" (25% UD)
  
ALUM
6
916179 (10% UD)
916347
STEEL
918844 [6]
5.5" (25% UD)
  
ALUM
6
NO A/C
916347
STEEL
918852 [5]
7.53"
6.75 LBS
ALUM
917073
6
HTD 8MM x 25T
916037A [2]
STEEL
LS7
918621
7.53"
6.7 LBS
ALUM
917048
8
916194
916057M
STEEL
918621N
7.53"
6.7 LBS
ALUM
917048
8
NO A/C
916057M
STEEL
918621U
6.78" (10% UD)
4.5 LBS
ALUM
917048U
8
916194
916057M
STEEL
918621UN
6.78" (10% UD)
4.5 LBS
ALUM
917048UN
8
NO A/C
916057M
STEEL
LT1 LT4
[7] [10]
917270
7.53"
9.75 LBS
STEEL
917015
6
—
916047A [8,9,11]
STEEL
917268
7.53"
6.75 LBS
ALUM
917073
6
—
916047A [8,9,11]
STEEL
917271 [12]
6.78" (10% UD)
4.5 LBS
ALUM
917071-44
6
—
916047A [8,9,11]
STEEL
917271 [12]
6.78" (10% UD)
4.5 LBS
ALUM
917071-44
6
—
916094
ALUM

[1] All hubs have 3/16 key @ std SB 10° location. Please note: 8 groove & 10 groove shell assemblies are available for supercharger applications. Consult your ATI salesman. #917017 (7 1/2” diameter, 8 groove, steel) #917018 (7 1/2” diameter, 10 groove, steel) #917075 (6 3/4” diameter, 8 groove, aluminum)
[2] Steel hub #916037A has 8mm, 25 tooth HTD belt drive instead of serpentine.
[3] Contains 40 durometer rubber. Not for full race engines. Specify 66 rubber or call.
[4] Belt #s: A/C 4040390, and Accessories 4060775
[5] Requires 1.25” longer crank bolt.
[6] Requires shorter belts: Gates #K060760 - 6 rib, #K040378 - 8 rib
  [7] Dampers furnished with #916320 hub spacer. For ‘97 & up Camaro/Firebird or ‘96 & up Corvette engine with a reluctor wheel; discard spacer provided.
[8] For hubs with a 6 hole bolt pattern and 2.25 seal, use hub #916049B for B body, 916048B for F body and 916096B for Y body.
[9] Hubs are made of heat-treated alloy steel.
[10] Washer #953070 is required with LT1 hubs and is shipped with dampers.
[11] This hub has a 3-bolt pulley pattern. For a 6-bolt pattern, use hub # 916048A.
[12] 10% UD - Requires Belt - Dayco #5060625, Goodyear #4060625, Delco #SK625.


Camaro Z-Body Serpentine Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
RIBS
6 RIB REAR A/C PULLEY #
HUB #
HUB
MATERIAL
LS3
918628
7.48"
6.75 lbs
ALUMINUM
917073
6
—
916430
STEEL
918629
6.78" (10% UD) [1]
4.5 lbs
ALUMINUM
917071
6
—
916430
STEEL
V6 2010 [2]
918636
7.07"
-
ALUMINUM
917099
—
916115
916114
STEEL
918637
7.07"
-
ALUMINUM
917099
—
916116 (10%UD)
916114
STEEL
918638
7.07"
-
ALUMINUM
917099
—
916117 (25% UD)
916114
STEEL
[1] Only OEM A/C pulley size available LS3 Camaro.
[2] Includes timing cover seal (#973136) and seal installer (#916113).

GM B-Body LT1 Serpentine Dampers IMPALA & CAPRICE
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
RIBS
4 RIB REAR A/C PULLEY #
HUB # [3]
HUB MATERIAL
LT1 [1]
917327
6.78" (10% UD) [2]
4.5 LBS
ALUMINUM
917071-44
6
—
916049A [4] [5]
STEEL
[1] Due to variations in GM’s production, the spacer provided may or may not be needed.
[2] Damper is 10% UD from OEM. Use belt #4060635.
[3] All hubs have 3/16 key @ std SB 10° location. Please note: 8 groove & 10 groove shell assemblies are available for supercharger applications. Consult your ATI salesman. 		  #917017 (7 1/2” diameter, 8 groove, steel) #917018 (7 1/2” diam., 10 groove, steel) #917075 (6 3/4” dia., 8 rib alum)
[4] For hubs with a 6 hole bolt pattern and 2.25 seal, use hub #916049B for B body,
[5] Hubs are made of heat-treated alloy steel.


Cadillac CTS-V LS2, LS6, LS-A Serpentine Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
RIBS
4 RIB REAR A/C PULLEY #
HUB #
HUB
MATERIAL
'04-'07 LS2 LS6
917266 [2]
7.53" (OEM)
6.75 lbs
ALUMINUM
—
—
—
916032
STEEL
917278
6.78" (10% UD)
4.50 lbs
ALUMINUM
—
—
—
916032
STEEL
'09 LSA
918854 [1]
7.53" (OEM)
6.75 lbs
ALUMINUM
—
—
—
916032-M3
STEEL
[1] No supercharger pulley supplied. Must add 916105, 916106 pulley of your choice.
[2] Damper assemblies have all countersunk bolts so nothing protrudes past front of damper. If you have an older damper and are ordering a new shell
assembly only, you must cut a .090” x 45° chamfer on the front of your hub. ATI can also perform this operation for $40 if you send your hub in.


Pontiac GTO LS1/LS2 Serpentine Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
RIBS
4 RIB REAR A/C PULLEY #
HUB #
HUB
MATERIAL
LS1/LS2 5.7L, 6.0L
917276 [1][2]
6.78" (10% UD)
4.5 lbs
ALUMINUM
917071-44
6
916732 (10% UD)
916031
STEEL
[1] Contains 40 durometer rubber. Not for full race engines. Specify 66 rubber or call.
[2] Belt #s: A/C 4040390, and Accessories 4060775
SSR & Trailblazer SS LS1/LS2 Serpentine Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
RIBS
4 RIB REAR A/C PULLEY #
HUB # [1]
HUB
MATERIAL
LS1/LS2 4.6L, 5.3L, 6.0L
917286
7.53"
9.75 lbs
STEEL
917015
6
916734
916430 [2]
STEEL
[1] All hubs have 3/16 key @ std SB 10O location. Please note: 8 groove & 10 groove shell assemblies are available for supercharger applications. Consult your ATI salesman. #917017 (7 1/2” diameter, 8 groove, steel) #917018 (7 1/2” diameter, 10 groove, steel) #917075 (6 3/4” diameter, 8 groove, aluminum)
[2] Hubs are made of heat-treated alloy steel. Order pt# 916430M for a modifi ed hub to be used with optional friction washer from OE unit.

Chevy Duramax Diesel Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
RIBS
HUB #
HUB
MATERIAL
2001 - 2005, EXT BAL
917371
7.5" OD
9.75 lbs
STEEL
917371S
8
916081
STEEL
2006 - PRESENT, EXT BAL
917369
7.5" OD
9.75 lbs
STEEL
917369S
8
916081
STEEL


GM Ecotec Serpentine Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
RIBS
HUB # [1]
HUB
MATERIAL
4 CYL 2.2L ECOTEC
917287
6.78" OD
6.75 lbs
ALUMINUM
—
8
916752
STEEL
917288 [2]
5.5" OD (12% UD)
4.50 lbs
ALUMINUM
—
6
916753
STEEL
[1] All hubs have 3/16 key @ std SB 10° location. 8 groove shell for supercharged upgrades, OEM 6 groove location.
[2] Damper is 12% UD from stock; not for over 600 HP on the street, 6 groove only
 
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