Manton Rockerarm

Gen 3 Hemi Intake & Exhaust 5.7L , 6.1L , 6.2L & 6.4L

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With valve train stability being our main concern we manufacture all of our shafts to be very stiff. These Stiff Shafts help Support the cylinder head like a Girdle. Our choice of material is .250” wall thickness 4130 Chromoly steel. Each heat treated shaft is prepared in a four axis milling center, then center less ground undersize, finish ground to size and Nitrided. This leaves a hard  surface with low friction, providing excellent wear protection in any application, including use in your daily driven street Hemi or 2000+ HP Race Car. All of our shafts use a threaded plug to seal each end. This eliminates any chance of an oil leak from worn or poor fitting O-rings.

4) Shafts Required Per Engine

Made in America!


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