Pontiac 287-455 Sportsman Steel Roller Rocker Arms 1.52 x 7/16"

PRW Rockers are designed to maximize the valvetrain efficiency of your Pontiac Engine
 

A definite improvement over stock rockers, PRW Sportsman Steel Stud Mount Roller Tip Rocker Arms are the ideal choice for a large cross-section of engines; whether it is a mild street rebuild or the performance requirements of off-road, cricle track and drag racing. PRW Sportsman Steel rockers are made from 4340 heat treated steel, and feature a longer slot design to eliminate stud interference. The roller tip minimizes scrubbing reducing friction and freeing up an additional 15 to 30 horsepower over stock rockers. Grooved pivot balls improve oil lubrication. These rocker arms are able to withstand valve spring pressures up to 350 PSI.

As with other PRW products, these are in-stock for immediate delivery. All PRW aluminum rockers come complete with PRW Extreme Pressure Assembly Lube and RockerLocs™ at no additional cost.

*For the 1958-1981 Pontiac 287-455 & 4.3L V8 engines

• 1.52 x 7/16"
• PRW RockerLocs™ included
• Roller tip minimizes scrubbing
• 4340 steel rocker bodies and heat-treated pivot balls
• Features elongated pivot slot for higher lift camshafts
• Excellent performance alternative compared to stock rockers
• Reduces friction; leading to additional 15-30 horsepower gain
• Stronger than die cast aluminum or stamped steel rocker bodies

*Picture may not be of actual ratio assembly, however pic does display quality of rocker. Rocker arms are nearly identical in quality and appearance and compete directly with the overpriced sets.

Others claim to have equally good products but close scrutiny by professional engine builders and machinists tell a different story.  Beware of false claims.

Imitation sets of rocker arms are being sold all over ebay.  Notice in the picture of a PRW Aluminum Rocker arm the clipped ends of the roller pin.  Unlike all PRW rocker arms, the cheap $100 rocker arms have pressed in pins which are prone to stress cracks that will ultimately result in failure. Those designs definitely cannot stand up to high spring pressures and high RPM like PRW rocker arms.