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1978 PONTIAC GRAND LEMANS ATI Standard Harmonic Balancers 917780

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Harmonic Balancer, Super Damper, Internal Balance, Steel, Black, Chevy Small Block, Pontiac 2.5L, Each

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Brand: ATI Performance Products

Manufacturer's Part Number: 917780

Part Type: Harmonic Balancers

Product Line: ATI Standard Harmonic Balancers

Summit Racing Part Number: ATI-917780

UPC: 800157917780

Engine Balance: Internal

Safety Rating: SFI 18.1

Degree Markings: Yes

Degree Marking Range: 360

Outside Diameter (in): 7.074 in.

Harmonic Balancer Material: Steel

Harmonic Balancer Construction: Elastomer

Harmonic Balancer Finish: Black zinc chromate

Mounting Hardware Included: No

Quantity: Sold individually.

Notes: Lightweight steel. 8.75 lbs. 3-ring design 1.500 in. wide.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

These Super Damper standard harmonic balancers from ATI are specifically designed for high-rpm engines. Their proven elastomer is designed and tuned to eliminate harmful crankshaft harmonics that cause parasitic horsepower loss. They are actually two dampers in one--a 4 in. diameter inner damper and a 6 3/8 in., 7 in., or 8 in. diameter outer damper in two shells that bolt to the crank hub. These dampers are engineered to all but eliminate worn parts and timing problems. They're tunable in the field, rebuildable, and extremely efficient at all rpm.

Warranty

Most Helpful Reviews Review this Product

2 Customer Reviews for ATI Performance Products 917780 - ATI Standard Harmonic Balancers

Average Customer Review

5 Star

(1)

4 Star

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3 Star

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2 Star

(1)

1 Star

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unfortunate experience

Summit RacingSummit Racing Verified Purchase

I purchased one of these balancers after much consideration. Balancer ended up having an unsquared shell causing the accessory pulley to wobble badly. I talked to ATI directly who told me its "impossible" for their cnc machine to make a mistake. After sending many photos and videos to ATI, they finally acknowledge there is an issue. At "my own" expense I have to return the shell to ATI for inspection. Product is a good product, I unfortunately did not receive one and service from manufacturer is very poor. ...read more

2 of 2 found this review helpful.

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Reviewer: JIM from Canada

Date: June 04, 2014

Appearance
Ease of Installation
Price/Value
Quality

Harmonic Balancer

Summit RacingSummit Racing Verified Purchase

Looks like a work of art. Haven't used it yet, but it is a quality piece. Thanks

0 of 0 found this review helpful.

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Reviewer: JOHNNY from TX

Date: April 14, 2014

Appearance
Ease of Installation
Price/Value
Quality

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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