Home
>>
Valvetrain
>>
Manley
>> Rocker Arm Studs
Manley Rocker Arm Screw-In Studs
Professional
Manufactured in Manley's own CNC double spring turning centers
Minimum run out
8740 material with 190,000 psi
Roller threads
large radii Flat Poly Lock surface
Street Master
Special maxalloy steel
Rolled threads
Part #
Application
Roller
Rockers
Stud
Girdles
Upper
Threads
Dimensions
Price/
Set
A
B
C
D
Professional
42276-16
SB Chevy & Ford
Yes
No
3/8"
2.425"
.670"
.945"
.810"
$49
42277-16
SB Chevy & Ford
Yes
No
7/16"
2.440"
.660"
.890"
.810"
$
49
42287-16
SB Chevy w/ 18° head
Yes
Yes
7/16"
2.850"
.750"
1.300"
.800"
$
49
42288-16
SB Chevy & BB Chevy
Yes
Yes
7/16"
2.810"
.740"
1.020"
1.050"
$
49
42290-8
SB Chevy & BB Chevy
Yes
Yes
7/16"
2.810"
.740"
1.020"
1.050"
$25
42287-16
BB Chevy
Yes
Yes
7/16"
2.850"
.750"
1.300"
.800"
$
49
42278-16
BB Chevy
Yes
No
7/16"
2.580"
.820"
.900"
.860"
$
49
42255-8
BB Chevy w/ alum.
head, exhaust studs only
Yes
Yes
7/16"
3.700"
1.700"
1.000"
1.000"
$25
42266-16
BB Chevy Mark V w/ 3/8"
lower threads coverting to
Mark IV heads
Yes
No
7/16"
2.600"
.775"
.885"
1.000"
$
49
42293-8
BB Chevy w/Dart aluminum
Yes
Yes
7/16"
3.300"
1.300"
1.000"
1.000"
$25
Street Master
42106-16
SB Chevy & Ford
n/a
n/a
3/8"
2.560
.690
.840
1.030
$
25
42147-16
SB Chevy & Ford w/Poly Locks
n/a
n/a
3/8"
2.420
.690
.920
.810
$
25
42103-16
SB/BB Chevy & Ford
n/a
n/a
7/16"
2.550
.790
.890
.870
$
25
