2011 - Crane Cams

Rocker Arm Studs
Rocker Arm Studs
Crane’s screw-in rocker arm studs eliminate problems resulting from press-in studs
pulling out at high RPM and in high valve spring pressure applications. Made from
high quality alloy steel, Crane studs are precision machined and heat treated for
reliable operation with today’s valve train loading. Specially machined threads and
shoulder area assures firm and positive rocker arm support with minimum movement
or distortion.
The 99148 studs are used to convert Chevrolet 60° V-6 80-94, 2.8-3.1L engines
with non-self aligning 10mm stud rocker arms to use adjustable narrow body 3/8”
stud rocker arms without cylinder head machining.
Top Stud
Diameter
& Thread
Pro Series Rocker Arm Studs
Bottom Stud
Diameter
& Thread Dim. A Dim. B Dim. C Dim. D Part No.
3/8” -24 5/16”-18 2.313 .813 1.500 .875 99146-16
3/8” -24 3/8”-16 2.313 .813 1.500 .875 99145-16
3/8” -24 10mm-1.5 2.384 .813 1.572 .582 99148-16
3/8” -24 7/16” -14 2.396 .700 1.750 .806 99156-16
7/16” -20 5/16” -18 2.313 .813 1.500 .875 99147-16
7/16” -20 7/16” -14 2.560 .800 1.760 .860 99157-16
7/16” -20 3/8” -16 2.650 .750 1.900 1.000 99152-16
(Conversion stud for Chevrolet Gen V and VI, must use factory guideplates, not recommended for applications with
over 480 pounds open valve spring pressure, no machining required.)
7/16” -20 10mm-1.5 2.650 .750 1.900 1.000 99155-16
(Conversion stud for Chevrolet 8.1 litre V-8, must use factory guideplates, no machining required.)
7/16” -20 7/16” -14 2.670 .740 1.930 1.060 99159-16
Crane Cams professional quality, Pro-Series rocker arm studs feature
an extra large radii for reduced stud flex, even with today’s
extreme valve spring pressures and high rpm racing engine operating
levels. Our Pro-Series rocker studs are precision manufactured
from 190,000 P.S.I. strength alloy steel material with rolled
threads, and precise top-to-bottom concentricity. These are stateof-the-art
items designed and priced for those seeking the highest
quality parts available. The 99151 stud has a longer than normal
unthreaded portion in the top section, providing superior
support and stability for the rocker arm fulcrum.
Top Stud
Diameter
& Thread
Bottom Stud
Diameter
& Thread Dim. A Dim. B Dim. C Dim. D Part No.
3/8”-24 8mm-1.25 2.157 .720 1.437 .625 99154-16
3/8” -24 8mm-1.25 2.360 .615 1.745 .800 99158-16
7/16” -20 7/16” -14 2.650 .750 1.900 1.000 99153-16
7/16” -20 7/16” -14 2.700 .800 1.900 .800 99151-16
866-388-5120 • 386-236-9983 FAX 327
D
C
B
A