Manton Diesel D-6.0/6.4PS-STG3.5 - Engine Valve Spring Kit

2003-10 6.0L / 6.4L Ford Powerstroke - Stage 3.5 Kit - Series 5 Performance Upgrade Pushrods & High Boost Valve Springs

$793.09 USD
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Manton Diesel D-6.0/6.4PS-STG3.5 - Engine Valve Spring Kit

2003-10 6.0L / 6.4L Ford Powerstroke - Stage 3.5 Kit - Series 5 Performance Upgrade Pushrods & High Boost Valve Springs

Manton's Stage 3.5 Kit for 2003-2010 Ford Powerstroke is an upgrade replacement for the factory light wall pushrod, Include High Boost Valve Springs & Series 5 11/32 Pushrods

  • Length: 9.795" OAL

  • Diameter: 11/32

  • Wall Thickness: .120

  • Tips: 3/8 Ball, 3/8 Ball, W/Oil

  • High Boost Straight Valve Springs

$793.09 USD
SKU: D-6.0/6.4PS-STG3.5
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2003-10 6.0L / 6.4L Ford Powerstroke -Series 5 -11/32 X .120 Wall , Includes High Boost Valve Springs

Series 5 pushrods recommended for competition and modified engines, providing 105,000 psi tensile strength over Series 3. Improves valve timing accuracy under high RPM, boost, or nitrous conditions. Proven in top fuel, sprint car, tractor pulling, and marine applications.

Upgrade from OEM pushrods due to inadequate strength for non-stock applications. Made from 4130/4135 seamless Chromoly tubing heat treated, with billet steel tip ends. CNC machined from 86L20 bar stock, core hardened, triple tempered for durability. Enhances valve train performance and longevity.

Available in 3/8 and 7/16 diameters to suit different engine setups. Larger diameter spreads load and prevents binding with cylinder head ports.

Correct pushrod length crucial for maintaining stock rocker geometry and preventing premature hydraulic unit failure. Overlooked but critical for performance.

We offer custom length pushrods for modified applications, please contact us for details

Note of interest: Ford has decided to supersede the original 6.0 pushrod length of 9.850 and is now going to supply only one length of 9.795 for both the 6.0 & 6.4 engines.

Manton Powerstroke 6.0/6.4L High Rev/High Boost Valve Springs

Designed by Manton for reliability across all performance levels, from Mild to Wild. Sold in a pack of 32 springs. Note: Ford now supplies a single 9.795-inch pushrod length for both 6.0 and 6.4 engines.

Valve spring specifications:

  • 120 lbs @ 1.840" installed height

  • 284 lbs @ 1.340" (.500" valve lift)

  • Accommodates max valve lift of .540"

  • Fits: 2003-2010 6.0 and 6.4L Powerstroke engines

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