Rocker Arm Stud Material: 8740 Chromoly

Make: FORD

Engine Family: Ford small block Windsor



Brand: ARP

Manufacturer's Part Number: 134-7104

Part Type: Rocker Arm Studs

Product Line: ARP High Performance Series Rocker Arm Studs

Base Thread Size: 7/16-14 in.

Rocker Arm Nut Thread Size: 3/8-24 in.

Guideplate Locator Shank: Yes

Rocker Arm Nut Thread Length (in): 1.000 in.

Effective Stud Length (in): 1.895 in.

Base Thread Length (in): 0.710 in.

Quantity: Sold as a set of 16.

Notes: Fits most Small Block Ford with 3/8 screw-in studs. Machine work may be required.


ARP High Performance series rocker arm studs are ideal for ET bracket racing, limited rule oval track competition, or street use. Made from 8740 chromoly steel and are heat-treated to 180,000 psi tensile strength, they are concentric within .005 T.I.R. thread pitch to thread pitch, which will give you more consistent rocker geometry. With an extra-large radius base, they are more resistant to flex and will provide a more positive seating. These rocker arm studs are designed to be used with Perma-Loc adjusters (not for use with OEM-style, self-locking nuts).