T&D Machine Products B-1 User Manual

INSTALLATION INSTRUCTIONS
Please follow these instructions to ensure the proper operation of your T & D MACHINE

PRODUCTS Chrysler B-1 Rocker Arm Assembly with 5/8" diameter rocker shafts.

1. CYLINDER HEAD INSPECTION AND PREPARATION
Inspect the cylinder heads to be sure they are clean and free of any burrs that may

interfere with the rocker stands. Inspect the tapped holes for proper thread depth.
Minimum thread depth is 3/4". This rocker system is designed to oil through the
pushrods, so the block and lifters must be modified accordingly. Also, the oil
supply holes in the cylinder head must be plugged to prevent leaking by tapping the
oil holes for a 12-24 set screw.

2. DETERMINE CORRECT STAND HEIGHT
Install the rocker stands on the cylinder head using the 3/8-16, 12 point attaching

bolts. Remove a rocker arm from one of the shafts and place that shaft on a
stand. Take the shaft height gage supplied with the kit and place it on the valve
stem as shown in Figure 1.

The gage should contact the top of the valve and the rocker shaft as shown in
Figure 1.

If the gage contacts the shaft before touching the top of the valve stem, as shown
in Figure 2, remove a corresponding amount of material from the stud bosses on
the cylinder head. This will lower the rocker stand on the cylinder head.

If the gage contacts the top of the valve stem and does not touch the rocker shaft,
as shown in Figure 3, add a corresponding amount of shims between the stand
and the cylinder head. This will raise the rocker stand and shaft to the correct
height.

4. DETERMINE CORRECT PUSHROD LENGTH
Place a pushrod length checker into the lifter and install the rocker arm assemblies.

Be sure the cam is rotated to the base circle. Seat the bottom of the adjuster screw
up against the recess in the rocker arm and turn the adjuster screw clockwise one
full turn down. This is the initial adjuster position. Adjust the pushrod length tool to
the proper length, remove from the engine, and measure its overall length.