T&D Machine Products V-10 User Manual

INSTALLATION INSTRUCTIONS Please follow these instructions to ensure the proper
operation of your T & D MACHINE PRODUCTS Viper V-10 Rocker Arm Assembly.

1. DETERMINE CORRECT STAND HEIGHT
Install the rocker stands on the cylinder head using the 3/8-16, attaching bolts. The

stands should be placed on the head so that the stamped letters face the valve stem.
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 Figure1.

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.

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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.

2. DETERMINE CORRECT PUSHROD LENGTH
Place a pushrod length checker into a lifter and install a 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.

The rocker arm should not be operated with the adjuster screw more than one turn up or
down, from the initial adjuster position. Doing so can cut off the flow of oil to the rocker
arm.

3. FINAL ASSEMBLY
After all of the stand heights have been set, place a rocker and shaft back on the stand to

assure good rocker to valve alignment and torque the stand attaching bolts to 35/40 ft-lbs.
When the stands are aligned and tightened down, place the rocker arm and shaft
assemblies on the stands and tighten the shaft hold down nuts to 25 ft-lbs. After all of the
rockers have been tightened down, set valve lash and torque the adjuster screw jam nut
to 5/20 ft-lbs.

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