SpeedMaster PCE260.1005
Set of 16 screw-in 7/16"-14 × 3/8"-24 rocker studs with 2.000" / 50.80 mm effective length, made from 4140 chromoly.
Speedmaster PCE260.1005 is a set of screw-in rocker arm studs manufactured from 4140 chromoly steel. The studs are roll-threaded, heat-treated, and protected by a black-oxide finish.
Application / fitment
The set is semi-universal and intended for heads prepared for 7/16"-14 base threads and 3/8"-24 rocker-arm nuts. It can be used in many American V8 cylinder heads after confirming stud height, guideplate compatibility, and valvetrain geometry.
- cylinder-head thread: 7/16"-14
- rocker-arm nut thread: 3/8"-24
- effective length above hex: 2.000" / 50.80 mm
- base-thread length: 0.920" / 23.37 mm
- upper-thread length: 0.680" / 17.27 mm
- set contents: 16 studs
The cylinder head must have correctly machined and threaded bosses. Before installation, verify guideplate alignment, roller contact on the valve tip, pushrod length, and clearance between the stud and rocker throughout the full lift cycle.
Technical information
- part type: screw-in rocker arm studs
- material: 4140 chromoly steel
- manufacturer-stated tensile strength: above 190,000 psi
- overall length: 2.790" / 70.87 mm
- finish: black oxide
- sale unit: 1 set of 16 pieces