Aug 11, 2016 - 11:51 AM
Unfortunately, there are no specific HP/TQ ratings on the ARP DIESEL HEAD STUD KIT 247-4202. That being said, we find that most applications under the 800HP range are perfectly fine running the ARP 247-4202 studs. (We’ve seen applications over the 800HP mark running the 247-4202’s.) Most extreme race applications tend to run the ARP (CUSTOM AGE 625+) 247-4204 kit because of the higher PSI tensile strength.
The ARP 247-4202’s 2000 Material is rated at 220,000 PSI tensile strength and the ARP 247-4204’s 625+ material has a minimum rating of 260,000 psi tensile strength.