Adjust. Rocker Arm Nuts w/12 Point Heads
|One of the more aggravating things found in
many high performance engines is constantly having to re-adjust rocker
arms. Fact is, up until ARP introduced the patented Perma-Loc adjuster,
there wasnt a poly lock on the market that you didnt
have to keep adjusting. There are several important reasons why ARPs
exclusive Perma-Loc rocker arm adjusters wont loosen like others.
First, the adjuster body material is premium grade 8740 chrome moly steel
which has been heat treated all the way through, not just case hardened.
This eliminates common thread movement. Threads are machined exactly perpendicular
to the bottom of the adjuster, so it seats evenly and applies pressure
on a full 360deg. circle. Lastly, the set screw is machined flush on the
bottom, so it will have optimum contact on the rocker arm stud. ARP Perma
Locs are easy to use. The compact 12 point head is designed to hold your
wrench in position while you lock the set screw with an allen wrench.
With most poly-locks you have to invest in a special tool
to do this job. 190,000psi tensile strength.
|CHEVROLET, SMALL BLOCK|
||Thread Size||Shank Size||Length||Application|