What is the purpose of a push rod in an engine?

A push rod connects the rocker arm to the lifter in an overhead valve engine. It transfers the motion from the camshaft's lobe to open and close the engine's valves.

Why is 4130 chrome moly steel used for these push rods?

4130 chrome moly steel is a strong and durable alloy. It's chosen for performance applications because it can withstand the higher stresses and pressures associated with aggressive camshafts and valve springs.

What does 'swedged end' mean for a push rod?

A swedged end is a manufacturing process where the end of the tube is compressed and shaped. This creates a stronger, more durable end that can also help with oil distribution within the valvetrain.

Specifications

Brand: Manley Performance
Part #: 25765-16
UPC: 807298033105

Manley Push Rod - 5/16 Dia. - 9.000 Length - 0.080 Wall - 4130 Chrome Moly - Swedged End - Set of 16

Name: Manley Push Rod - 5/16 Dia. - 9.000 Length - 0.080 Wall - 4130 Chrome Moly - Swedged End - Set of 16
Brand: Manley Performance
SKU: manley-performance-manley-push-rod-5-16-dia-9-000-length-0-080-wall-4130-chrome--t14-879745
Price: 261.22 USD
Availability: BackOrder

$261.22

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Manley Performance push rod set. Built with 4130 chrome moly for improved durability in performance engine builds.

Key Features

Set includes 16 push rods for V8 engines.
Constructed from durable 4130 chrome moly steel.
Features swedged ends for improved strength and oiling.
Meticulously formed ends with exact radii for precise fitment.
Excellent concentricity and closely controlled length for consistent valve train geometry.
Heat treated and black oxide finished for added durability and corrosion resistance.

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About this part

Product Details

If you're rebuilding the top end of your engine, especially for a performance application, getting the right push rods is key. These push rods from Manley Performance are made from 4130 chrome moly steel, a strong material that holds up well under the stress of higher lift cams and stiffer valve springs. They're designed to be a direct replacement for many applications, ensuring they fit right into your engine's valvetrain.

What sets these apart is the attention to detail in their construction. Manley forms the ends with precise radii and maintains excellent concentricity, meaning they're perfectly round and balanced. This close control over length and form helps ensure consistent valve train geometry, which is crucial for proper engine operation and longevity. The heat treatment and black oxide finish add to their durability and resistance to corrosion.

This set includes 16 push rods, enough for a V8 engine. The swedged ends are a common feature that helps with oiling and strength. When you're putting together a performance engine, using well-made components like these push rods can make a real difference in how reliably it runs.