1989 C4 Exhaust port shape
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2nd Gear
Joined: Jul 2012
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Then I guess my next question is about manifold gaskets. I was planning on using copper gaskets I've had good luck with them in the past. Jegs calls out a square port gasket for the car, which was why I asked about port shape. Any recommendations are much appreciated.
Race Director
Joined: Nov 2003
Posts: 12,221
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
It's a repost from YOU! I just added the "graphics" for clarification.
At the time, it was a similiar discussion -- but about the interchangeability of headers from L98s to LT1s.
My graphics were to highlight the difference in port "height" -- in relation to the bolt-hole locations. This is often referred to as a higher port IMO.
At the time, it was a similiar discussion -- but about the interchangeability of headers from L98s to LT1s.
My graphics were to highlight the difference in port "height" -- in relation to the bolt-hole locations. This is often referred to as a higher port IMO.
