What Do I Torque the Bolts To?
The first step is to identify which bolts you have. Eagle rods are offered with a variety of different bolts. Each of which has a different torque requirement. Proper bolt torque is paramount to rod strength and life. Eagle does not use "off the shelf" ARP bolts. Eagle has ARP custom make bolts to our specifications. DO NOT use torque specs for off-the-shelf ARP bolts. Here is a diagram of some important bolt identifying features.
The following chart shows the head of the bolt, the dimensions, and the proper torque spec. Be careful! the heads of some bolts look similar and some even have the same markings. DO NOT identify the bolt by the head alone. Verify dimensions also! If the head of your bolts do not match one of the pictures below - you do not have Eagle rods! Please consult the manufacturer of your rods for proper torque specs. Their torque spec is most likely different than ours! Always use ARP moly lube on the threads and under the head of the bolt when torquing!
material
socket
size
under
head
length
thread
size
torque
8740
7/16"
1.500"
3/8"
40 ftlbs
material
socket
size
under
head
length
thread
size
torque
8740
7/16"
1.600"
7/16"
63 ftlbs
material
socket
size
under
head
length
thread
size
torque
8740
7/16"
1.750"
7/16"
63 ftlbs
material
socket
size
under
head
length
thread
size
torque
8740
7/16"
1.800"
7/16"
63 ftlbs
material
socket
size
under
head
length
thread
size
torque
2000
3/8"
1.500"
5/16"
28 ftlbs
material
socket
size
under
head
length
thread
size
torque
2000
7/16"
1.500"
3/8"
43 ftlbs
material
socket
size
under
head
length
thread
size
torque
2000
7/16"
1.600"
7/16"
75 ftlbs
material
socket
size
under
head
length
thread
size
torque
2000
7/16"
1.800"
7/16"
75 ftlbs
material
socket
size
under
head
length
thread
size
torque
L-19
1/2"
1.600"
7/16"
79 ftlbs
material
socket
size
under
head
length
thread
size
torque
L-19
1/2"
1.750"
7/16"
79 ftlbs
material
socket
size
under
head
length
thread
size
torque
CA 625+
3/8"
1.500"
5/16"
32 ftlbs