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Forum: 77-81 Firebird & Trans Am TECH 04-24-2010, 11:33 AM
Replies: 2
Views: 230
Posted By 2manyT/A'S
It sounds like you are using 1970 manifolds. ...

It sounds like you are using 1970 manifolds.

They only have 3 mounting holes per side and are MORE prone to leaking if the mating surface is warped or rough/uneven.

Check them with a straight...
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