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Old 08-22-2019, 06:11 PM   #4
ford38v8
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Location: SF Bay Area
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Default Re: 40 engine temperature drop by 20 degrees

Quote:
Originally Posted by L78CHEVELLE View Post
Paul, you got me on that one. Never heard of the "old penny trick".
It can be done with a wheat stalk penny tapped into the crossover holes in the block. Only the wheat stalk, though, as the crappy alloys of the newer pennies won't stay in place. Alternatively, a thin shim stock can be slid in place without removing the manifold. Kool Kats would never think of using anything but wheat stalks, though.
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