02-04-2026, 11:49 PM

daduck

Senior Member

Join Date: Jul 2005

Location: Cottleville, MO

Posts: 170

1977 Grand Prix exhaust manifolds - will Firebird manifolds fit?

Grand Prix has a factory Pontiac 400 with 6x heads,
Firebird Central has Ram Air D-port exhaust manifolds but does not list Grand Prix as compatible.
I am going to call them but wanted to ask the experts here first.
I am not at all familiar with Firebird fitment or clearance issues compared to Grand Prix.
I plan to replace the entire exhaust system so the downpipe flanges on the Ram Air manifolds being different from stock it is not a problem.

TIA,
Dave

Reply With Quote

« Previous Thread | Next Thread »

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules

Forum Jump

All times are GMT -4. The time now is 05:47 AM.

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

Menu

About Us