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Home > Products > Super Dampers > Chevrolet Super Dampers

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
  • OEM equipment on ZZ572 GM Crate Engines
  • Tunable, rebuildable, and extremely efficient at ALL RPM
  • Laser engraved 360° timing marks

Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight. This inertia weight has six (2-ring design) or eight (3-ring design) computer machined grooves to retain the proper durometer O-rings (dyno tested for each application).

If you need a Chevy damper for a serpentine belt set-up, see our Serpentine Damper Guide: Serpentine Dampers

Damper Accessories
LS1 Crank Pin Drill Fixture Kit
Damper Installation Instructions
How to read the Damper charts


Chevy Super Damper

Chevy Super Dampers
 
  CHEVROLET FRONT FOR HUB WITH INNER SHELL
 
  LIGHT STEEL DAMPER: 3.5lbs INIERTIA WEIGHT

STEEL SHELLS
ALUMINUM SHELLS
CRANKSHAFT HUB
PART NUMBERS
8.074" OD
7.074" OD
6.325" OD
8.17" OD
7.074" OD
6.325" OD
3 RING
3 RING
2 RING
3 RING
2 RING
STEEL
ALUM
STEEL WITH
INNER SHELL
TOTAL WEIGHT
INERTIA WEIGHT
15.4 lbs
7.6 lbs
11.5 lbs
4.5 lbs
8.3 lbs
2.4 lbs
13.6 lbs
7.6 lbs
12.0 lbs
6.0 lbs
6.25 lbs
4.5 lbs
5.45 lbs
3.70 lbs
5.0 lbs
3.4 lbs
3.9 lbs
2.4 lbs
2.2 lbs
1.97 lbs
DAMPER ONLY LESS CRANKSHAFT HUB PART NUMBERS
CHEVROLET FRONT [1]
917007 917010 918940 917030 918850 917020 917070 917050
AVG. WEIGHT
2.4 lbs
AVG. WEIGHT
.85 lbs
CHEVROLET FRONT FOR HUB WITH INNER SHELL [2]
917009
917011
918942
INTERNAL BALANCE DAMPER ASSEMBLY PART NUMBERS
SB V6 & V8
1.246" CRANK
STANDARD FRONT
NO COUNTER BORE
917785 917782 91722 91722 917220 917221 917200 917410 917260 916040
917210
917480
917320
916090
917781
916951
917780
916951
STANDARD FRONT
NO COUNTERBORE
2ND 3/16" KEYWAY AT 180° FROM STANDARD
917780K
916951K
STANDARD FRONT
NO COUNTER BORE UNDERSIZED HUB
1.24" BORE
 
917781U
916951U
USE WITH DRY SUMP COUNTER BORE ACCEPTS DRIVE MANDREL [4]
917204 917206 917412 916044
917788
916952
917789 916952
USE WITH JESEL BELT DRIVE [5]
917232
917233
917234
917236
916092
USE W/ HILBOURNE
FUEL INJECTION [3]
       
917257
916540
V6 60º
STD OEM FRONT [16]
917190 916170
INLINE 6 - '53 - '55 SINGLE V-BELT      
918425 [15]
916009  
409 [8]
917781
                 
916951
LS1
SB V8
1.483" CRANK
COUNTERBORED TO ACCEPT DRIVE MANDREL [4]
917777
[16]
917776     917211 [16]   917213 [16] 917215 917216
916045 [13]
SB V8
1.600" CRANK
STD FRONT - USE W/ DRY SUMP COUNTER BORE TO ACCEPT DRIVE MANDREL [4]
917783 917784     917222 917223 917201 917411 917261 916043
917228 917229 916093
STD FRONT - USE WITH DRY SUMP COUNTER BORE TO ACCEPT DRIVE MANDREL - 2ND 1/4" KEYWAY AT 180° FROM STANDARD [4]
917783K 916043K
V8 BIG BLOCK

STANDARD
OEM FRONT
 
916890
917061 917301 918700 916010
    917311 918720
916080
               
916890
  917312 917313            
916890
2ND 1/4" KEYWAY 180° FROM STANDARD                
916890K
STD OEM FRONT UNDERSIZED HUB 1.594" BORE
917060U
           
916890U
EXTERNAL BALANCE DAMPER ASSEMBLY PART NUMBERS
HUB
HUB, SHELL & WGHT
HUB &
SHELL
V8 SB 400
917080
916071-2
916070-2
V8 BB
454-502
MARK IV
& GEN 5
STD OEM FRONT
917740
916122-2
916120-2


[1]
These are damper shell assemblies only - without a hub
[2] These dampers are outer shell, inertia weight and o-rings only. The inner shell is integral with the crank hub.
[3] Hub is 1” longer than standard.
[4] Hubs for these assemblies have a 2.280 counterbore. A standard length crank bolt is used and the mandrel bolts to the 3 pulley mounting holes. This eliminates the 4” - 6” long bolt that is ineffective in retaining torque. Adapter part # 916321 is available for existing mandrels with 1.245” pilot.
[5] Aluminum hubs for these assemblies have a 2.250 seal diameter with a .500 wall thickness and fits inside the Jessel lower pulley. This eliminates hub failure at the keyway on engines driving dry sump pumps and pulleys. For Comp Cams style belt drive, use a 7", 2 ring Damper due to fitment issues with the cam timing adjustment. Hub must be machined to fit inside lower cam gear.
[7] Use hub part # 916172 for 1.245” crankshaft with BB seal and Chevy bolting.
[8] Timing pointer must be corrected. Original pointer shows approximately 10° @ TDC (advanced) when the piston is at TDC.
[13] Use part #916088 for Jesel Belt Drive and steel hub or 916087 for Jesel Belt drive and aluminum hub
[15] Non-stock damper - 8 week lead time required.
[16] 7" Dampers will not fit front distributor drive timing covers

For boat applications, ATI offers Hub Part #916098 to allow the damper to be mounted to the back of the crankshaft.


GM Supercharged Dampers
 
  CHRYSLER OEM FRONT BLOWER DRIVE 3/8-24 PULLEY BOLTS
 
  CHEVROLET FRONT - 6 BOLT
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
(LESS HUB)
INERTIA WEIGHT
SHELL MATERIAL
HUB #
(AVG WEIGHT 2.4 LBS)
SB BLOWER - 1.246" CRANKSHAFT - 2 X 3/16 KEYWAYS, RACE USE: 8 LBS MAX BOOST, STREET USE: 12 LBS MAX BOOST
918872E
7.074"
8.75 LBS
4.5 LBS
STEEL
916133 [1]
SB BLOWER W/BBC 1.600" CRANKSHAFT, 3/16" & 1/4" KEYWAYS 180° APART
918873E
7.425"
8.75 LBS
4.5 LBS
STEEL
916134 [3,4]
SB 6-BOLT 3/18-16 CHEVY FRONT DUAL 3/16" KEYWAYS - BB CHEVY SEAL DIAMETER - USE #925500 COVER
918869
7.074
8.75 LBS
4.5 LBS
STEEL
916172
1997 - 2013 LS1, 2, 3, 6 Y BODY, G8, SS &
2004 - 2007 CTS-V
8 & 4 GROOVE
917345
7.425"
-
-
STEEL
916032-M3
10 & 4 GROOVE
917347X
7.530"
-
-
ALUM
916032-M3
10 GROOVE - NO A/C
917349X
7.530"
-
-
ALUM
916032-M3
LS1 F BODY (8 & 4 GROOVE)
917345A
7.425"
-
-
STEEL
916031
LS1 / LS2 F BODY CAMARO / FIREBIRD / V BODY GTO
6 BOLT PATTERN FOR BOLT ON BLOWER PULLEY, SINGLE 3/16” KEYWAY
918853
7.425"
-
-
STEEL
916031S
LS3 Z-BODY 2010 - 2015 CAMARO & GEN 3 VORTEC TRUCK
6 BOLT PATTERN FOR BOLT-ON BLOWER PULLEY, SINGLE 3/16” KEYWAY
918635
7.480"
14.00 LBS
4.0 LBS
ALUM
916430M
LS3 2010-2015 CAMARO & GEN 3 VORTEC TRUCK - 4% OD (10 & 4 GRV)
918632
7.950"
-
ALUM
916430M
LS3 2010-2015 CAMARO & GEN 3 VORTEC TRUCK - 4% OD (8 & 4 GRV)
917285
7.425"
-
STEEL
916430M
LS3 Z BODY CAMARO 2010 - 2015
LS1/LS2 C & K BODY TRUCK SSR, AND TRAILBLAZER - SINGLE 3/16" KEYWAY
10 GROOVE, 8” 6% OD WITH AC
918625
8.190"
-
-
ALUM
916430M
10 GROOVE, OEM WITH AC
918627
7.530"
-
-
ALUM
916430M
LS7 Y BODY, 10 GROOVE - 8” 10% OD - OEM AC PULLEY, SINGLE 3/16” KEYWAY
918622
8.250"
-
-
ALUM
916058
LS9 Y BODY, 11 & 6 GROOVE, 14% OD
918624
8.530"
-
-
ALUM
916107
LS9 Y BODY, 11 & 6 GROOVE
918634
7.530"
-
-
ALUM
916107
BB CHEVY FRONT 366 - 502, 10 GROOVE
917066
7.425"
-
-
STEEL
916891
BB CHEVY FRONT BLOWER DRIVE, 12 GROOVE
917066-12
7.425"
-
-
STEEL
916891
BB BLOWER 3/16” & 1/4” KEYWAYS, 180° APART
918871E
7.074"
8.75 LBS
4.50 LBS
STEEL
916145
918870E
7.074"
6.25 LBS
4.50 LBS
ALUM
916145
BB BLOWER 38-24 CHEVY FRONT 3/16” & 1/4” KEYWAYS, 180° APART
917064
7.074"
6.25 LBS
4.50 LBS
STEEL
916891 [2]
BB BLOWER DRIVE WITH JESEL BELT DRIVE, 3/16” & 1/4” KEYWAYS, 180° APART HUB HAS 24 TOOTH 8MM HTD ACCESS. DRIVE
918874E
7.425"
8.75 LBS
4.50 LBS
STEEL
916144
BB BLOWER, 3/16” & 1/4” KEYWAYS 180° APART - EXTERNAL BALANCE
917741E
7.425"
8.75 LBS
4.50 LBS
STEEL
916143
[1] Use hub part #916136 for 1.246“ SB crankshaft with BB seal and Chrysler bolting.
[2] One-piece hub and inner shell.
[3] For equally spaced OEM holes & ignition trigger, use #916134A.
[4] The BB Chevy & SB Chevy with BB 1.600” nose both use a unique 2-piece hub that allows the stock length bolt to hold the damper to the crank & a separate extension to locate the blower pulley and crank trigger.





GM Corvette Y-Body Serpentine Dampers INCLUDES LS1, LS2, LS3, LS6, LS7, LS9, LT1, LT4, LT5 AND V6 ENGINES

ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
(LBS)
SHELL MATERIAL
SHELL ASSEMBLY #
GROOVES
4 GROOVE REAR
PULLEY #
HUB # [2]
HUB
MATERIAL
LS1
'97-'04 C5

LS2
'05-'07 C6

LS3 [13]
'08-'13 C6

LS6
'01-'04 C5 Z06

G8/L76
‘08-'09

NEW “SS”
917246 [6]
7.53"
9.75 LBS
STEEL
917016CSX
6
916734
916032-M3
STEEL
917266 [6]
7.48"
6.75 LBS
ALUM
917074CS
6
916734
916032-M3
STEEL
917278 [1,5,6]
6.78" (10% UD)
4.5 LBS
ALUM
917071CS-44X
6
4 RIB AC - 916732
916032-M3
STEEL
917279 [1,5,6]
6.78" (10% UD)
4.5 LBS
ALUM
917071CS-44
6
916032-M3
STEEL
917247 [1,5,6]
6.78" (10% UD)
4.5 LBS
ALUM
917071CS-44
6
916036
ALUM
917303
7.48"
6.75 LBS
ALUM
917073CS
6
916032-M3
STEEL
917267 [6]
7.53"
6.75 LBS
ALUM
917073CS
6
4 RIB DRY SUMP [4]
916033 (60% UD)
STEEL
917249 [1,5,6]
6.78" (10% UD)
4.5 LBS
ALUM
917071CS-44
6
4 RIB DRY SUMP [4]
916033 (60% UD)
STEEL
917219 [1, 6]
6.78" (10% UD)
4.5 LBS
ALUM
917071CS-44
6
4 RIB DRY SUMP
916038 (60% UD)
ALUM
918848 [3, 14]
5.67" (25% UD)
ALUM
6
4 RIB - 916179
916349
STEEL
918847 [14]
5.67" (25% UD)
ALUM
6
916349
STEEL
917289 [1,5,6]
6.78" (10% UD)
4.5 LBS
ALUM
917071CS
6
HTD 8MM x 28T
916033A
STEEL
LS7

LS3 W/DRY SUMP [13]
918620
7.43"
9.0 LBS
ALUM
917049
8
4 RIB [11]
916058
STEEL
918620N
7.48"
9.0 LBS
ALUM
917049N
8
916058
STEEL
918620U
6.73" (10% UD)
4.5 LBS
ALUM
917049U
8
4 RIB [11]
916058U
STEEL
918620UN
6.78" (10% UD)
4.5 LBS
ALUM
917049UN
8
916058U
STEEL
LS9 ZR1
918634
7.53"
6.7 LBS
ALUM
917097
11
6 RIB [11]
916107
STEEL
918624 [12]
8.53" (14% OD)
11.5 LBS
ALUM
917093
11
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
6.95"
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, Goodyear #K040405 - 4 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.
  [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.
[13] 2010 LS3 Corvette Grand Sport coupes w/Manual Transmissions come equipped with a Dry Sump system, so an LS7 style damper is required.






LT4 Super Damper 917315
with 5% Overdrive Pulley
  GM 2014 LT1 & LT4 Corvette Serpentine Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
(LBS)
SHELL MATERIAL
GROOVES
HUB #
HUB
MATERIAL
LT1 & LT4 - WET SUMP
2014 CORVETTE STINGRAY
917314
[1, 2]
7.48"
7.30 LBS
(LESS HUB)
ALUM
6
916154
STEEL
2.9 LBS
LT1 & LT4 - DRY SUMP
2014 CORVETTE STINGRAY
917315
[1, 3]
7.48"
7.30 LBS
(LESS HUB)
ALUM
6
916164
STEEL
2.9 LBS

GM 2016 LT1 & LT4 Camaro Serpentine Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
(LBS)
SHELL MATERIAL
GROOVES
HUB #
HUB
MATERIAL
LT1 WET SUMP
2016 CAMARIO SS,
LT4 2016 CAMARO ZL1
918856
7.48"
7.30 LBS
(LESS HUB)
ALUM
6
916032M3
STEEL
2.9 LBS
LT1 WET SUMP
2016 CAMARO, 10% UD
918857
7.48"
7.30 LBS
(LESS HUB)
ALUM
6
916032M3
STEEL
2.9 LBS

[1] Requires a supercharger pulley (sold separately):
     ProCharger to C7-LT1, Dry Sump
     LT1-LT4 Dry Sump 5% OD
     LT1-LT4 Dry Sump 10% OD
     LT1-LT4 Dry Sump 15% OD
     LT1-LT4 Dry Sump 20% OD
     Pulley bolts included with pulley
916163
916163-5
916163-10
916163-15
SK1040-B5

$150.00
$150.00
$150.00
$160.00
$185.00

  [2] Includes 951500 crank bolt
{3] Includes 951499 crank bolt




GM F-Body Serpentine Dampers INCLUDES LS1 / LS2 - LT1 & LT4
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL ASSEMBLY #
GROOVES
4 GROOVE
REAR PULLEY #
HUB # [1]
HUB MATERIAL

LS1
F-BODY
'98-'02 CAMARO
FIREBIRD

LS1/LS2
V BODY
'04-'06 GTO

917242
7.48"
9.75 lbs
STEEL
917015
6
916734
916031
STEEL
917264
7.48"
6.75 lbs
ALUM
917073
6
916734
916031
STEEL
917302
7.48"
6.75 lbs
ALUM
917073
6
916031
STEEL
917276 [3][4]
6.78" (10% UD)
4.5 lbs
ALUM
917071-44
6
916732
916031
STEEL
917277 [3][4]
6.78" (10% UD)
4.5 lbs
ALUM
917071-44
6
916031
STEEL
917243 [3][4]
6.78" (10% UD)
4.5 lbs
ALUM
917071-44
6
916035
ALUM
917238
7.48"
6.75 lbs
ALUM
917073
6
4 RIB DRY SUMP
916037 (60% UD)
STEEL
917239 [3]
6.78"
4.5 lbs
ALUM
917071-44
6
4 RIB DRY SUMP
916037 (60% UD)
STEEL
918845 [5, 6]
5.67" (25% UD)
 
ALUM
6
916179 (10% UD)
916347
STEEL
918844 [5, 6]
5.67" (25% UD)
 
ALUM
6
916347
STEEL
918852 [5]
7.48"
6.75 lbs
ALUM
917073
6
HTD 8MM x 25T
916037A [2]
STEEL
918855
6.78" (10% UD)
6.75 lbs
ALUM
917071
6
HTD 8MM x 25T
916037A [2]
STEEL
LT1 LT4
[7] [10]
917270
7.53"
9.75 lbs
STEEL
917015
6
916047A [8,9,11]
STEEL
917268
7.48"
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
917272 [12]
6.78" (10% UD)
4.5 lbs
ALUM
917071-44
6
916095
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 and includes 1.25” longer crank bolt (951359) with washer (953074).
[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 ASSEMBLY #
GROOVES
REAR PULLEY #
HUB #
HUB
MATERIAL
LS7/LS9 DRY SUMP w/LS3 ACCESSORY DRIVES
918639
7.48"
9 lbs
ALUMINUM
917073
6 & 4
916734B
916431
STEEL
LS3
918629
6.78" (10% UD) [1]
-
ALUMINUM
917071
6 & 4
916734B
916430M
STEEL
918628
7.48"
7.9 lbs
ALUMINUM
917073
6 & 4
916734B
916430M
STEEL
918644
7.48"
7.9 lbs
ALUMINUM
917073
6 FRONT
NO AC
916430M
STEEL
V6 2010 - 2015 [2]
918636
7.074"
-
ALUMINUM
917099
6 REAR
916115
916114
STEEL
918637
7.074"
-
ALUMINUM
917099
6 REAR
916116 (10%UD)
916114
STEEL
918638
7.074"
-
ALUMINUM
917099
6 REAR
916117
(25% UD)
916114
STEEL
2012 ZL-1 LSA [3]
918854
7.480"
-
ALUMINUM
917092
6 & 4
916032M3
STEEL

[1] Only OEM A/C pulley size available LS3 Camaro - NAPA Belt # 25060827 & 25040353 AC
[2] Includes timing cover seal (#973136) and seal installer (#916113).
[3] No Supercharger pulley supplied. Must choose #916105 (5% OD) or #916106 (10% OD).



GM LS7 Camaro Serpentine Dampers
LS7 - OEM SNOUT WITH ZETA-BODY CAMARO ACCESSORIES
2010 - 2015 Z Body Camaro & Gen 3 Vortec Truck accessory location on an LS7 with OEM length crank snout

Available in several diameters with your choice of 6, 8 or 10 ribs.
Assemblies fit Hub #916431
OUTER
DIAMETER
GROOVES
SHELL
ASSEMBLY #
BOLT
PACK #
HUB #
OEM
6
917073
950213
916431
OEM
8
917025
950209
916431
5% OD
8
917107
950213
916431
10% OD
8
917108
950213
916431
OEM
10
917034X
950209
916431
4% OD
10
917091
950209
916431
6% OD
10
917094
950209
916431

Available A/C Pulleys:

OUTER
DIAMETER
PART #
7.5" (OEM SIZE)
916734B [1,2]
7.0" (6% UD)
916734 [1,2]
6.25" (17% UD)
916732 [1]

[1] ATI does not recommend using these dampers without A/C pulleys. If you plan on running a non-A/C set-up, please contact ATI.

[2] Order 916734M1 for ‘98 - ‘02 F Body Camaros

LS7 - LS9 Call us for more information on these new applications
PART #
DESCRIPTION
918643
LS7 DRY SUMP W/2010 CAMARO / TRUCK ACCESSORIES LONG SNOUT
SK286R
LS7 WET SUMP W/2010 CAMARO / TRUCK ACCESSORIES LONG SNOUT
SK286S
LS7 WET SUMP LONG SNOUT
SK286F8
LS7 DRY SUMP WITH F BODY ACCESSORIES
SK128H6
LS9 WET SUMP LONG SNOUT



GM LS Based COPO Camaro Crate Engine Serpentine Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
SHELL MATERIAL
SHELL ASSEMBLY #
GROOVES
4 RIB PULLEY #
HUB #
HUB MATERIAL
327/350 LS3 SUPERCHARGED
918327 [2]
7.95"
ALUMINUM
917135
10
916732
916430MK
(DUAL KEY)
STEEL
2016 COPO SUPERCHARGED
327/350 LS3
918327-16
7.95"  ( 5.6% OD)
ALUMINUM
917138
10
916732
916430MK
(DUAL KEY)
STEEL
350, 396,
427 LS3 N/A
918427 [1]
7.48"
ALUMINUM
917073
6
916732
916430M
STEEL
2016 COPO
LS3 N/A 350, 396, 427
918427-16
7.074"
ALUMINUM
918850
--
916794
916045
STEEL
[1] Can be built with a smooth shell assembly #918850 and titanium bolts.
[2] Available with 7.53" OD shell assembly #917073-60 with 60 durometer o-rings.




GM B-Body LT1 Serpentine Dampers IMPALA & CAPRICE
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL ASSEMBLY #
GROOVES
4 GROOVE 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
4 GROOVE REAR A/C PULLEY #
HUB #
HUB
MATERIAL
'04-'07 LS2 LS6
917266 [2]
7.48" (OEM)
6.75 lbs
ALUMINUM
916734
916032-M3
STEEL
917278 [3]
6.78" (10% UD)
4.50 lbs
ALUMINUM
916732
916032-M3
STEEL
'09-'15 LSA
918854 [1]
7.48" (OEM)
6.75 lbs
ALUMINUM
916734
916032-M3
STEEL
'16 LT4 - WET SUMP
918856
7.48" (OEM)
7.30 lbs
ALUMINUM
916734
916032-M3
STEEL
[1] No supercharger pulley supplied. Must add 916105, 916106, 916153 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.
[3] CTS-V is 10% UD - Use Duralast Part # 375K4 for AC pulley and Gates Part # K060806, 6 rib for accessory drive.

Optional CTS-V Supercharger Pulleys
DESCRIPTION
PART #
PRICE
CADILLAC CTS-V - 8-GROOVE - 7.99" OD - OEM
916153
$129.00
CADILLAC CTS-V - 8-GROOVE, 5% OD
916105
$129.00
CADILLAC CTS-V - 8-GROOVE, 10% OD
916106
$129.00


Gen 3 Vortec, SSR & Trailblazer SS LS1/LS2 Serpentine Dampers
GEN 3 VORTEC TRUCK INCLUDES 4.6 / 5.3 / 6.0 L, SSR (‘03 - '06) LS1 & LS2, TRAILBLAZER SS (‘06 - '09) LS2 - 6 RIB WITH 4 RIB A/C PULLEY
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
GROOVES
4 RIB REAR A/C PULLEY #
HUB # [1]
HUB
MATERIAL
LS1/LS2 4.6L, 5.3L, 6.0L
917286 [2]
7.53"
9.75 lbs
STEEL
917015
6
916734B
916430M
STEEL
918629
6.78" (10% UD) [1]
-
ALUMINUM
917071
6 & 4
916734B
916430M
STEEL
918628
7.48"
7.9 lbs
ALUMINUM
917073
6 & 4
916734B
916430M
STEEL
918644
7.48"
7.9 lbs
ALUMINUM
917073
6 FRONT
NO AC
916430M
STEEL
[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] All 2010-2015 Z Body Camaro dampers are compatible with this application, including OEM 6 rib as well as 8 rib and 10 rib overdrive blower dampers.


Chevy Duramax Diesel Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL
ASSEMBLY #
GROOVES
HUB #
HUB
MATERIAL
2001 - 2005, EXT BAL
917371 [1]
7.425" OD
15 lbs
STEEL
917371S
6
916081
STEEL
2006 - 2010, EXT BAL
917369 [1]
7.425" OD
15 lbs
STEEL
917369S
6
916081
STEEL
2011 - PRESENT, EXT BAL
917376 [1]
7.425" OD
15 lbs
STEEL
917376S
6
916081
STEEL
2001 - 2015 - NEUTRAL BALANCE, HEAVY INERTIA
917378

7.425" OD
18 lbs
STEEL
6
916081
STEEL
[1] Use damper #917378 for internal balance version.


GM Ecotec Serpentine Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
GROOVES
HUB # [1]
HUB
MATERIAL
4 CYL ECOTEC
[1]
917287
6.78" OD
4.50 lbs
ALUMINUM
8
916752
STEEL WITH
INNER SHELL
917288 [2]
5.67" OD (12% UD)
4.50 lbs
ALUMINUM
6
916753
STEEL WITH
INNER SHELL
[1] All hubs have 3/16 key @ std SB 10° location. 8 groove shell for supercharged upgrades, OEM 6 groove location. Fits all LSJ, LNF, LHU, LDK, LE5 engines. When using the 14% UD w/AC, Alternator and Tensioner, use belt K050390
[2] Damper is 12% UD from stock; not for over 600 HP on the street, 6 groove only



  How to read this chart
  1. Locate the correct manufacturer's chart
  2. Choose the specific engine application listed down the left side of the chart
  3. Determine if the damper needs to be internally or externally balanced ( external balance dampers are constructed of steel only). Black bars that extend horizontally across the entire chart designate these sections
  4. Determine if you need steel or aluminum shells. Labels for this information are listed across the top of the chart in columns 2 and 3.
  5. Once you have determined the shell material, you need to find the outside diameter (OD) of the desired steel or aluminum shell. Then choose between 2 or 3 rings and the desired weight of the damper.
  6. From the far right section of the chart, select either a steel or aluminum hub for your desired engine application. To determine the correct damper assembly part number that intersects is the correct damper assembly.
  7. Assembly part numbers that are color coded correspond to the pulley mount bolt pattern listed near the top of the charts.
 
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