Holley’s G3 Hemi Swap Power Steering Kit

Holley continues to blaze a path for all the Mopar devotees swapping a GEN III Hemi into a muscle car or truck. Holley recently introduced a new power steering kit (part no. 97-382) for the 5.7-, 6.1-, and 6.4-liter engines, which includes a power steering pump, reservoir, mounting bracket, hardline adapter, and a pulley. Holley’s (Saginaw type II) low-pressure power steering pump replaces the high-pressure pump found on all late-model Hemis. By reducing the fluid pressure, the Holley pump closely matches the older cars’ steering boxes’ operating pressures, which will prevent damage to the power steering components.

The Holley power steering pump assembly has a contemporary style plastic reservoir. A black anodized billet aluminum mounting bracket secures the pump to three existing tapped holes on the left-side cylinder head. A few Hemi vehicles come with electronic power steering (EPS) and do not have the cylinder head tapped for the bracket, so check the head before attempting the pump installation. Holley sized the six-rib billet aluminum black anodized pump pulley for optimum speed and pressure control. The pulley requires an installer that can be purchased (or rented) from a local parts store.

Above left: The Holley power steering pump comes with a late-model style plastic reservoir. The low-pressure pump provides 1200 psig with a low-flow 0.88 gallons per minute (GPM) and high-flow of 2.8 GPM. It is compatible with a Federal or Saginaw steering box in displacements of 0.94, 0.96, 1.02, or 1.06 cubic inches found on the 60s/70s muscle cars. Above right: The kit includes a black anodized billet aluminum mounting bracket and matching hardware. The left-side cylinder head has three factory tapped holes that Holley employs to secure the bracket. Because electronic power steering was used with some vehicles, those cylinder heads may not have the three bolt holes. Therefore, it is advisable to verify the cylinder head to be used before attempting to install the bracket.

The power steering pump on the late-model non-SRT cars (before 4/9/2007) and all SRT vehicles can develop pressure up to 1740 pounds per square inch gauge (psig). On non-SRT cars (after 4/9/2007), the pump builds only 1590 psig. The Holley pump provides 1200 psig with a low-flow 0.88 gallons per minute (GPM) and 2.8 GPM high-flow.

Depending upon the swap vehicle’s power steering box manufacturer (Federal or Saginaw) and displacement (0.94, 0.96, 1.02, or 1.06 cubic inches), the Holley pump pressure is marginally higher than the 850-1000 psig found on most a-bodies and the 1075 psig of the b- and e-bodies. It is slightly less than the 1300 psig found on many c-bodies. The muscle car era pumps flowed between 1.2 to 3.0 GPM, similar to the Holley pump.

Holley has developed another beneficial component to assist with a Hemi swap. The Holley power steering pump kit comes with everything necessary to replace the late-model factory pump with a more pressure-friendly pump that works with the old Mopar steering boxes. The power steering kit will be available in mid-January, so get online and order yours now.

Above left: The six-rib billet aluminum pulley is appropriately sized to provide the optimum pump speed and pressure to deliver the power assist without overwhelming the classic factory steering box. The pulley comes in a matching anodized black color. Above right: To facilitate the proper routing of one of the power steering hoses, Holley designed a hardline adapter with a banjo-style fitting on one end and a flare fitting on the other. If a component from the kit should ever be damaged, Holley sells the pump, hardline, pulley, and mounting bracket as separate service parts.

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Chris Holley

Technical Contributor Chris has been a college professor for 25 years; at Pennsylvania College of Technology in Williamsport, PA. for the last 20 years. Chris instructs automotive classes in HVAC, electrical/electronics, and high-performance, including using a chassis dyno, flow benches, and various machining equipment. Recently, he added a vintage vehicle upholstery class to his teaching assignments. Chris owns a '67 Dart, a '75 Dart, a '06 Charger, and a '12 Cummins turbo diesel Ram, and he is a multi-time track champion (drag racing) with his '69 340 Dart, which he has owned for 34 years.

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