JKM

Whats the low down on putting these in? I know you have to machine the block for the bigger studs , but is it as simple as drilling out the holes and rethreading them for the 14mm stud? Can it be done with the head on? ETC?

cummnz4x4pwr

you also must ream the holes on the head

Jetpilot

We are working with ARP to produce a limited number of stud kits that will be 12mm studs but with the holding power of the 14mm studs. The studs would be made of Custom Age 625 plus. This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best of all it is less expensive and expected to soon replace MP-35 as the material of choice in the high strength, super-alloy field. Typical tensile strength is 260,000 psi.

These studs are not going to be cheap but they will be cheaper than all the work to go with 14mm. Also there is no concern of taking out to much material in the block..... Hopefully I will know final pricing within the next 7 days.

Doug Smith