What Torque Setting Is Required To Tighten Rocker Arms On A Ford 302 Cleveland V8? Thanks

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John Yows answered
This is a hydraulic lifter engine, right? Then there is no torque spec for the rocker arm adjustment nut on adjustable rocker engines. Rather, you want to rotate the crank until the valve you are working on is on the base circle (that is, the valve is completely closed), then tighten the nut until there is no play in the pushrod -- most shadetree mechanics test this by trying to rotate the pushrod with one hand while tightening the nut with the other. This is the zero lash position. Most sources suggest then tightening the nut an additional 1/2 to 3/4 turn to set the proper preload.

If you have the proper tools and the intake manifold is not installed, you can measure your preload. It should be somewhere between 0.02" and 0.06 inch in most applications, though I don't have a Ford manual in front of me. If you have an aftermarket cam, suggested preload should be listed in the cam's documentation.

You can also adjust with the engine running, if you get (or make) blockoff clips to prevent oils spraying all over the place. Basic procedure is to tighten all rockers until they stop clattering, then loosen one at a time until they start making noise, then retighten until it stops -- this should be zero lash. Give it another half turn and it's set.

If what you have is actually a later non-adjustable pedestal type rocker mount there will be a torque spec for that mounting nut or bolt.

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