Stud Mounted:

Step 1: Rotate engine to number 1 cylinder TDC. Check distributor rotor to make sure it is at the number
1 cylinder terminal. Remove valve covers.

Step 2: Remove old rocker arms for number 1 cylinder. If you are converting a pedestal type cylinder head,
see the modifications instructions below.

Step 3: Oil the pushrod, rocker stud threads, rocker arm and nut.

Step 4: Install the new roller rocker arms for number 1 cylinder with the flat area on the trunnion shaft up.

Step 5: Make sure the rocker does not bottom on the rocker stud radius. Check clearance through the
entire lift range. Check rocker arm geometry. You may need to change pushrod length to achieve
proper geometry.

Step 6: Also check pushrod guideplate alignment. Some guideplates must be split to allow good pushrod

Step 7: Install the rocker arm nuts and set cold lash/lifter preload. Tighten the rocker arm lock screw.

Step 8: Rotate engine to the next cylinder in the firing order and repeat the process.

Firing order: 302/460 1-5-4-2-6-3-7-8
351C/351W/302 HO 1-3-7-2-6-5-4-8

Cylinder Head Modifications for Rocker Arm Studs:

Pedestal type cylinder heads can be modified for rocker arm studs (351C illustrated). Machine at right angles to
the existing stud hole/bolt hole, not the bottom of the head. The valves in canted valve heads operate at compound
angles. For 302/351W cylinder heads, measure from the top of the pedestal.

Recommended milling dimensions:
302/351W .230″
351C-351M-400 .300″
1968-1972 429/460 .230″
1973-1994 429/460 .300″

Bolt-on Rocker Arms:

The bolt-on rocker arm assemblies are designed to be used as a direct replacement for stock rocker arms on standard
engines with hydraulic camshafts and lifters. Do not use anti-pump-up lifters

Engines with non-standard components may need pedestal shims or longer pushrods.

Step 1: Remove valve covers. Rotate engine to number 1 cylinder TDC. The distributor rotor should be at the
number 1 terminal.

Step 2: Remove stock rocker arms, fulcrums and bolts from number 1 cylinder. Clean pedestal mounting surface.
Remove pushrods; clean, oil and reinstall. Make sure the pushrod is in the lifter seat.


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