Crane

Crane Gold Race Extruded Rocker Arm Kits, Rocker Arms, Stud Mount, Full Roller, Aluminum, 1.5 Ratio, Fits 3/ 8 in. Stud, Chevy, Small Block, Set of 16

Rocker Arms, Stud Mount, Full Roller, Aluminum, 1.5 Ratio, Fits 3/8 in. Stud, Chevy, Small Block, Set of 16

Add some extra horsepower.
Crane's Gold Race rockers reduce operating friction so well, they can give you up to 25 extra horsepower over your stock pivot ball rockers. Just look at what Crane puts into them:

* CNC-machined castings from super-strong extruded billet aluminum for total strength and reliability
* Precision needle-bearing fulcrums to reduce friction
* 8620 steel alloy roller tips for reliable, easy valve operation
* Special oil inlets to the bearings and roller to ensure reliability under operation
* Slotted bodies for extra stud clearance
* 4140 chromemoly Allen head adjustment nuts