manifold
This is an excellent thread full of good info. My question is this, do the original
FB manilfols have a heat flapper in them. the reason I ask is because i don't recall
mine having them when I removed them during resto 10 years ago. I just sandblasted
them and coated them with exhaust calyx.
I do plan to remove mine again and clean them ports up and resize exhaust exit
hole.
Gerry C
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1968 Firebird 400, 068 cam, TH400 & 13" Continental Converter, Auburn posi with 3:08 factory gears, Cliff's Q-jet resting on a 68 factory iron intake, GM HEI and Ram Air pans and RARE Long Branch Manifolds
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