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Manley 25239-1 Small Block Chevy Pushrods 8 In, .120 Wall, 14 rod
Manley 25239-1 Small Block Chevy Pushrods 8 In, .120 Wall, 14 rod

SBC 5/16 .120 WALL 8.00

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Manley 25239-1 Small Block Chevy Pushrods 8 In, .120 Wall, 14 rod
SBC 5/16 .120 WALL 8.00
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Part # UP93778
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Important Messages:

  • This product is discontinued.
  • This item ships directly from the manufacturer. It may take an additional business days for Manley to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
  • This item UP93778 is made to order. It will be shipped from our warehouse when it is produced.



This is Garage Sale priced because it is not a complete set, missing 2 pushrods.

These one-piece chromoly pushrods are designed to be used with higher spring pressures and high performance engines. Hardened and ground for use with guide plates. 5/16" diameter, 8.000" long.

  • 4130 Chrome Moly 5/16" push rod
  • .120 wall
  • 8.000 long (.200" longer than stock)
  • Meticulously formed ends with exact radii
  • Excellent concentricity, closely controlled length
  • Heat treated and black oxide finished


Selecting correct push rod length is vital in obtaining the proper geometry for valve train. The rocker should ride in the center of valve stem so it does not come off of stem as cam opens and closes. Push rod length will raise or lower rocker moving where it sits on valve stem. Camshaft, lifters, rockers and valves all play a part in determining what length of push rod is required. We offer a couple of tools to help check this length. Part number 50542137 and 28799720 will help with finding correct push rod length.




Some parts are not legal for use in California or other states with similar laws/regulations

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  • What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.
  • Learn the basics to engine performance like; how does a cam work? What is Valve lift, duration, lobe separation angle, and cam profiles? Afterwords selecting the right camshaft will be less of a guessing game!
  • Once you're ready to start selecting valve train components, we have some useful tips and tools that should boost your performance. We discuss proper valve-springs, pushrod length, and rocker arm ratios.
  • One of the most important parts of your racing operation is the engine. This article gives a detailed overview on how to maintain your engine to get the most out of it for as long as possible. Also learn some tips to prolong the life of your engine.

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