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Group: Administrators
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While it’s pretty much a given that using the gaskets on exhaust manifolds where they mate up to the iron heads increases the propensity for the exhaust manifolds to crack, what’s the general consensus for what happens with the same exhaust manifolds when used on the aluminum heads? I ask this due to the rarity of the Thunderbird exhaust manifold and the number of those Thunderbirds now getting a set of aluminum heads. At this point, there doesn’t seem to be a ‘best practice’ for either gasket or no gasket when using factory exhaust manifolds on the aluminum heads. Thoughts regarding this subject or personal experiences welcome.
  Lorena, Texas (South of Waco)
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