Engine/Transmission (1994 - 1998) Rockers-Head Studs

[KCloward]

I want to put a set of ARP head studs in my truck and was wondering what the machining of the pedestal rockers meant. Why do they need this and would I be okay if I didn't do it and just put the studs in? Also how well does the grinding of an OEM stud work to remove the debri from inside the hole?



Bryce

 

[JDKammin]

The head stud kit was been revised. There was a clearance problem between the new head stud/nut and the underside of the valve cover. The updated kit has shorter studs to allow proper clearance to the valve cover. In order to keep a full nut of threads, the rocker arm pedestal needs to be machined . 200" shorter where the head stud and nut seat on the pedestal. There is a very good picture included in the instructions that come with the studs kit. I have a set of the ARP #247-4203 available for the 12 valve engine.

 

[JGK]

And to answer your other question, I ground a groove down the side of one stock head bolt of each length and used them as clean-out tools before installing the studs. I'd shoot a little brake cleaner down the hole, run the slotted bolt down and back out, then blow it out with an air gun. Put a little anti-seize on the stud before screwing it in. Screw it in with your fingers only till it begins to snug, then lube the washer and nut and screw it on.



-Jay