Don't assume anything! (Makes an a$$ out of U and me!)

Here's an alternative valve adjust method I've used for over 40 years:

Companion cylinder valve adjustment

Turn engine by hand until you observe #6 exhaust valve closing. Continue turning until #6 intake begins to open. (Called "rocking", valves moving in both directions at once) This happens at the top of the exhaust stroke, with the piston at, or near TDC. #1 cylinder, both valves, can be adjusted at this point. Turn until #2 cylinder rocks, adjust #5. (Each time the engine turns 120 degrees, another cylinder will be at TDC, ready to adjust). Turn until #4 rocks, adjust #3. Next 120 degrees, #1 will rock, adjust #6. Rock #5, adjust #2. Rock #3, adjust #4. All 12 valves can be accurately adjusted in 2 turns of a stopped engine, hot or cold, and no oil spilling!

This works on any engine with an even number of cylinders. Easy way to remember which ones to rock/adjust: Write down half the firing order, then write other half underneath it: Chevy 6:

1 5 3
6 2 4

1 & 6 are companion cylinders- - -rock one, adjust the other. Same with 2 & 5, and 3 & 4. Quick, easy, and it works!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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