Manley Performance
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Manley Rotating Assemblies 28120PB Assembly, Forged Pistons, H-beam Connecting Rods, Internal Balance, 3.543 in. Stroke, 5.933 in. Rod Length, Ford, 284, Kit
Manley Rotating Assemblies 28120PB Assembly, Forged Pistons, H-beam Connecting Rods, Internal Balance, 3.543 in. Stroke, 5.933 in. Rod Length, Ford, 284, Kit
A$7,552.33
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Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 05:28:01
Features
Note for Pistons, Rings, Rotors, Rods and engine internals
Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.
(keyword: pistons)Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Manley Performance, Manley |
| StreetFX SKU | man28120PB |
| SFX Item ID | 4928447 |
| Accounting SKU | man-28120PB |
| Manufacturer SKU | 28120PB |
| Manufacturer UPC | 807298106977 |
| Alternative References | 28120PB, MAN-28120PB |
Rotating Assembly, Forged Pistons, H-beam Connecting Rods, Internal Balance, 3.543 in. Stroke, 5.933 in. Rod Length, Ford, 284, Kit
When it comes to building horsepower and torque, you need to start at the bottom and work your way up. Manley rotating assemblies are designed for performance enthusiasts wanting to get the most out of their engines. Their assemblies feature 4340 forged steel crankshaft and H-beam connecting rods, either 7/16 in. ARP 8740 cap screws with a 750 hp rating for LS engines/900 hp for big blocks, or optional ARP 2000 cap screws for up to 1,500 hp. They use 2618 Platinum Series forged aluminum pistons, chromoly premium wrist pins, Total Seal piston rings, and Clevite "H" Series narrowed rods and "P" or "H" Series main engine bearings. Building high-horsepower performance engines takes a lot of thought and all the right parts. Start off right with Manley rotating assemblies.
| Product Attributes | |
|---|---|
| Brand | Manley |
| Manufacturer's Part Number | 28120PB |
| Part Type | Engine Rotating Kits |
| Product Line | Manley Rotating Assemblies |
| UPC | 807298106977 |
| Actual Engine Displacement | 4.7L/284 |
| Rear Main Seal Style | 1-piece |
| Bore (in.) | 3.572 in. |
| Bore (mm) | 90.729mm |
| Engine Stroke (in.) | 3.543 in. |
| Balanced | Yes |
| Piston Material | Forged aluminum |
| Piston Style | Dish, with no valve reliefs |
| Harmonic Balancer Included | No |
| Flexplate Included | No |
| Flywheel Included | No |
| Pistons Included | Yes |
| Piston Head Volume (cc) | +11.00cc |
| Wrist Pin Style | Floating |
| Piston Rings Included | Yes |
| Piston Ring Facing Material | Plasmamoly |
| Crankshaft Included | Yes |
| Crankshaft Material | Forged 4340 steel |
| Engine Balance | Internal |
| Connecting Rods Included | Yes |
| Connecting Rod Length Center to Center (in.) | 5.933 in. |
| Connecting Rod Material | Forged 4340 steel |
| Connecting Rod Beam Style | H-beam |
| Rod Bearings Included | Yes |
| Rod Bearing Undersize (in.) | Stock |
| Rod Bearing Undersize (mm) | Stock |
| Main Bearings Included | No |
| Cam Bearings Included | No |
| Gaskets Included | No |
| Oil Pump Included | No |
| Camshaft Included | No |
| Lifters Included | No |
| Timing Chain and Gears Included | No |
| Plastigage Included | No |
| Assembly Lubricant Included | No |
| Quantity | Sold as a kit. |
| Notes | Kit includes 3/8 in. ARP 8740 cap screws on connecting rods. Fits models with a 2-valve or 4-valve engine. |
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