2021-22 Engine Catalog

HARMONIC BALANCERS

ATI Super Dampers ATI Dampers consist of an outer shell, inner shell, crankshaft hub, and up to three elastomers. All ATI dampers meet SFI 18.1 specifications.

Ring Shell

Outer Hub Steel

Crank Balance

Total Weight 11 lbs.

Part No.

Application

Diameter 7.074" 7.074" 6.325" 6.325" 6.750" 6.325" 6.325" 6.325" 6.325" 7.074" 7.074" 7.074"

Style

ATI917080 ATI917200 ATI917260 ATI917261 ATI917275 C ATI917320 ATI917411 A ATI917480 ATI917410 ATI917780 ATI917780K ATI917783K ATI917785 ATI917781 ATI917783 A, B ATI917784 A

400

3 2 2 2 3 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3

Steel

External Internal Internal Internal Internal

283-350 283-350

Aluminum Steel Aluminum Steel Aluminum Steel Aluminum Steel

7.50 lbs. 5.50 lbs. 5.75 lbs.

283-350, 1.600", Big Block Chevrolet Crank Snout

350 LT-1/LT-4 ,Corvette

12 lbs.

283-350

Aluminum Aluminum Internal

4 lbs.

283-350, 1.600", Big Block Chevrolet Crank Snout

Aluminum Steel

Internal

6.25 lbs. 4/75 lbs. 6.30 lbs.

283-350 283-350 283-350

Aluminum Aluminum Internal

Aluminum Steel

Internal Internal Internal Internal Internal Internal Internal Internal Internal Internal Internal

Steel Steel Steel Steel Steel Steel Steel Steel Steel

Steel Steel Steel Steel Steel Steel Steel Steel Steel

11 lbs.

5.0L/305, 1984-95

8.75 lbs. 8.75 lbs.

5.0L/305, 1984-95, With Big Block Chevrolet Crank Snout

283-350 283-350

7.074

11 lbs.

6.325" 7.074" 6.325" 6.325" 7.074" 7.074" 6.325"

8.50 lbs. 8.75 lbs. 8.50 lbs. 8.50 lbs. 8.75 lbs. 6.25 lbs.

283-350 1.600", Big Block Chevrolet Crank Snout

283-350 283-350 283-350 283-350 283-350

ATI917789

ATI918872E D

ATI917220 ATI917236

Aluminum Steel

Aluminum Aluminum Internal

4 lbs.

LT1/LT4 Engines ATI917315

LT1 2014, Dry Sump, Corvette

7.480"

3

Aluminum Steel

Internal

7.30 Lbs.

A Hub is counterbored for a dry sump drive. B Chevrolet 3-bolt front. C Signifies a serpentine-style balancer. D With blower pulley bolt pattern and two 3/16" keyways.

Damper Service Parts Part No. Engine

Construction

Hubs

ATI916040 ATI916040U ATI916043 A ATI916951U ATI916951 ATI916090

Small Block Chevy

Steel Steel Steel Steel Steel

Small Block Chevy .005 Undersize

Small Block Chevy

Small Block Chevy Crank Hub 2.760 Bolt Circle, 1.246" Crank

Small Block Chevy, Steel Inner Shell

Small Block Chevy

Aluminum

A Hub is counterbored for a dry sump drive. Shell Assemblies (Less Crankshaft Hub) ATI917010

Chevy Front, 7.074" Dia. 3-Ring with Inner Shell, Internal Balance Chevy Front, 7.074" Dia. 3-Ring with Inner Shell, Internal Balance Chevy Front, 6.325" Dia. 3-Ring with Inner Shell, Internal Balance

Steel

ATI917030 ATI917070

Aluminum Aluminum

Part No.

Description

Elastomer Kit ATI918980-76 Damper Tools ATI918999

Ring Kit, 6" O.D. 3-Ring 70/60/70 Durometer

Puller/Installer Kit, Universal, with Case, Also for Pulleys and Steering Wheels

ATI918980-76

87

2021-22 ENGINE BUILDER CATALOG

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