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arp studs question

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dsmotors95

10+ Year Contributor
93
1
Jun 16, 2012
spring valley, California
so i bought some studs a while back but i cant remember if they were head studs or main studs..is there any ways of knowing what i have? they were used and dint come in a box so i don't have a part number.
 
LOL@math
Can you measure them? main studs are 10mm diameter and approx 95mm long.
7 bolt head studs are 11mm diameter and longer.
If the studs measure 12mm diameter they're for a 6 bolt.
 
Can you measure them? main studs are 10mm diameter and approx 95mm long.
7 bolt head studs are 11mm diameter and longer.
If the studs measure 12mm diameter they're for a 6 bolt.

Diameter.
 
Main Studs are a 10mm ARP 207-5401 and torque 60 ft/lbs with ARP lube

6 bolt head studs are 12mm ARP 207-4201 And torque 90 ft/lbs

7 Bolt head studs are 11mm ARP 207-4203 and torque 80 ft/lbs

If you have main studs, they will not even thread in to a head bolt hole in the block, just fall in.

Main stud nuts use a 12pt x 12mm socket

6 bolt head stud nuts use a 12pt x 14mm socket

7 bolt head stud nuts use a 12pt x 13mm socket

Each kit will have
(10) studs
(10) washers
(10) nuts
(1) Pkg of ARP Ultra Moly lube (blue package)
 
Main Studs are a 10mm ARP 207-5401 and torque 60 ft/lbs with ARP lube

6 bolt head studs are 12mm ARP 207-4201 And torque 90 ft/lbs

7 Bolt head studs are 11mm ARP 207-4203 and torque 80 ft/lbs

If you have main studs, they will not even thread in to a head bolt hole in the block, just fall in.

Main stud nuts use a 12pt x 12mm socket

6 bolt head stud nuts use a 12pt x 14mm socket

7 bolt head stud nuts use a 12pt x 13mm socket

Each kit will have
(10) studs
(10) washers
(10) nuts
(1) Pkg of ARP Ultra Moly lube (blue package)
 
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