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Re: 350 with more leaks than you can imagine
That's a newer type of valve, it may not make any noise.
Pull one intake bolt at a time. The threaded shank of the bolt should be 1-1/4 inch long. Thoroughly clean the bolt. Coating all the threads on the bolt will not hurt anything. I use ultra black RTV by permatex. You can squirt a little carb cleaner down the bolt hole to rinse some of the oil back into the engine. The bolt holes are al lopen into the crank case of the engine. A little carb cleaner will not hurt anything.
If your intake is aluminum, you will need to re-check the bolts for tightness after the engine has cooled completely down from running. May need to do this more than once, especially with the middle 4 bolts (they are next to the exhaust crossover).
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