Quote:
Originally Posted by 68 Firebird
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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My Firebird was a california car and did not have a flapper assembly.