COMP Cams Stud Girdles - Manual

COMP Cams® Stud Girdles
Kit Components
ƒ 1 stabilizer bar for each cylinder head (either 1-piece or split design)
ƒ 1 rocker arm adjusting nut for each valve. Most canted valve applications require different
nuts for the intake and exhaust. Most kits have nuts with a small tru-arc ring to locate the
bars on the nuts. All the nuts have posi-stop set screws in the nuts.
Note: COMP Cams® Stud Girdles are CAD designed to fit stock stud locations, and CNC machined using the
most precise equipment in the industry. Made simple and durable, they are guaranteed to fit properly on all
heads with standard stud locations. Some aftermarket heads have relocated stud holes for wider valve
centerlines, and unless that application is specifically listed, the girdle will probably not fit.
Installation Instructions
Step 1
Prior to installation, inspect and clean all parts. Using a 7/32” Allen wrench, back the set screw in the
adjusting nut all the way up into the hex end of the nut. This will assure that there is proper room on
top to set the lash on the valve.
Step 2
Small Block Chevy & Ford, Pontiac - With all rocker arms in place (make sure that the trunion of the
rocker arm is counter bored for the adjusting nut to sit on), screw the polylocks down to secure the
rockers. Leave them finger tight and do not worry about the set screw at this time. Make sure the nuts
with the tru-arc ring are on the extreme end studs so that the bar cannot slide too far down the nut.
Note: Proceed to Step 4.
Canted Valve Engines Big Block Chevy, 429-460 Ford - These engines have a complex valve
arrangement; therefore, the procedures are a little different. Initially, install only the top row of
adjusting nuts. These are the intake studs and require the long adjusting nuts - (except for the 429-460
which have the same length adjusting nuts). As with the wedge engines, make sure the trunion of the
rocker arm is properly rotated with the counter bore to the top.
Step 3
Canted Valve Engines Big Block Chevy, 429-460 Ford - Slide the bar onto the top row of adjusting
nuts. Do not force the bar on! If everything is correct, it will slide on smoothly. Move the bar down
until the bottom row of studs is centered in the bottom row of holes in the adjusting bar. Then slide the
short exhaust nuts through the holes and thread them onto the bottom row of studs. Notice that the
holes in the stud girdle bar are angled and therefore require the adjustment of the bar up and down so
that the lower row of adjusting nuts will line up with their corresponding stud. It may be necessary to
wiggle the bar to line up all of the nuts, but if the bar is at the correct position, the nuts will all start and
go on correctly.
Part #144
Revised 12/15/03