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 Steel
Crank Balance Internal Internal
Total Weight 5 lbs.
Part No.
Application 318-360 318-360
Diameter
Style
ATI917400E ATI918282E
7.074" 7.074"
2 3
Alum. Steel
11.25 lbs.
Fluidampr Harmonic Balancers Traditional series Fluidampr harmonic balancers feature steel construction with a black zinc finish. Internally balanced unit has engraved degree markings for easy adjustment and has a 6-bolt mounting pattern. SFI-approved. Part No. Model Engine Diameter Balance SFI-Approved FLU720301 Fluidampr 318-360 7.250" Internal Yes
Powerbond Harmonic Balancers Two types of balancers are available: • SS Race Series balancers are SFI-approved. • Street Series models non SFI-approved. Part No. Model Engine Diameter
Balance Internal Internal External
SFI-Approved
PBBPB1004-SS PBBPB1004-ST PBBPB1108-SS
Race
318-340 318-340
7.250" 7.250" 7.250"
Yes
Street Series
No
Race
360
Yes
ProRace Balancers Pro/Street Dampers Are not intended for racing, made of gray cast nodular iron, pressure-bonded elastomer, removable counterweight, 60 degree permanent engraved timing marks, precision balanced. Part No. Model Engine Dia. Balance Weight SFI-Approved PRH24278 Pro/Street 273-360 7.30" External 9.36 lbs. No PRH35278 Balancer Counterweight with Hardware, Zinc-Plated, Each Pro/Sport Harmonic Balancers Feature a fully machined high-quality carbon steel outer ring and hub, pressure-bonded elastomer, 60 degree permanent engraved timing marks, meets SFI Spec. #18.1, spin tested to 12,500 rpm. Part No. Model Engine Dia. Balance Weight SFI-Approved PRH34277 Pro/Sport 273-360 7.01" Internal 11.14 lbs. Yes PRH34278 Pro/Sport 273-360 7.01" Extermal 11.14 lbs. Yes PRH35278 Balancer Counterweight with Hardware, Zinc-Plated, Each
281 2021-22 ENGINE BUILDER CATALOG
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