How to cut steel pushrods, Valve Train Set-Up Options

[Highland]

How to most people get their pushrods cut? Should I take the pushrods to the same machinest that worked on my engine parts (crank, cylinders, rods,...) or to a regular machine shop?

Also, what tolerance should I give them? +/-0.001"?

Below are my numbers for a Raby 9590 cam with 0.426" lift for exhaust and intake. Are these numbers typical?

Cylinder.....Intake Lift....Intake Rod Length
1...............0.432................10.567"
2...............0.433................10.607
3...............0.431................10.640 (required 0.03 shim)
4...............0.424................10.578


Cylinder.....Exhaust Lift....Exhaust Rod Length
1...............0.410...............10.623"
2...............0.409...............10.618
3...............0.412...............10.663 (required 0.03 shim)
4...............0.410...............10.612

[74914LE]

Take them to a quality machine shop, and discuss in detail what you want. Call out the exact length for each, when finished, with ends attached. Make sure that they measure, and mark each pushrod with the exact meansurements you want. A quality machinist will get it right.

Lots of great info on this topic from Jake Raby.