Small Block Or Big Block Chevy 3/8" top x 7/16" lower with or w/o guide plates - Professional Series
ARP High Performance and Professional Series Rocker Arm Studs offer improved
reliability through longer thread engagement in the cylinder head and an extra
large radius for reduced flex. Special applications have been designed for
aftermarket heads to assure proper fit. High Performance Series are rated at
170,000 PSI while Professional Series are rated at 190,000 PSI.
ARP Rocker Arm Studs, 7/16" - Typical SB application
If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in - you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. ARP rocker studs are concentric within .005 T.I.R. thread pitch to thread pitch. They run-in straight and true. Lengths are exact - designed to provide positive seating every time. An extra-large radius base offers greater resistance to flex. Available in both High Performance and Pro Series models. NOTE: Not to be used with OEM-style, self-locking nuts. To be used with ARP's patented Perma-Loc adjusters
Your Price:
$139.99
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SB Chevy Rocker Arm Studs, with Roller Rockers & Stud Girdle
If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in - you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. rocker studs are concentric within .005 T.I.R. thread pitch to thread pitch. They run-in straight and true. Lengths are exact - designed to provide positive seating every time. An extra-large radius base offers greater resistance to flex. Available in both High Performance and Pro Series models.
NOTE: Not to be used with OEM-style, self-locking nuts. To be used with 's patented Perma-Loc adjusters
IMPORTANT TECH NOTE
It is highly advisable to determine what the optimum rocker arm stud length is for your particular application. This is especially true when "long" pushrods and valves are employed - you should raise the "installed height" of the rocker arm to compensate for the longer-than-stock components.
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