Gasket question
Thread Starter
Heel & Toe
Joined: Aug 2025
Posts: 22
Likes: 0
From: New York City
Gasket question
Ive got a 94 LT1 for split track and street use. im porting my heads and port matching my intake. I have a choice between cometic or felpros gasket but wondering which size port is reccomended by you guys. Cometics ports are 2.065 x 1.56 and felpros are 2.28 x 1.38. Which is best for performance and best works with the heads themselves so im not running into really thin walls or any issues.
Thread Starter
Heel & Toe
Joined: Aug 2025
Posts: 22
Likes: 0
From: New York City
As was I. Turns out the felpros i mentioned were for a gen 1 sbc. Felpros site mustve glitched since it reccomended it to me for a 94. Just got the right gasket and the ports are 2.08x1.25. A bit smaller than cometic but cometic is backed up 5+ weeks right now. Down the line ill be needing some thick head gaskets from cometic for boost and ill order the larger intake gasket then retouch my porting. For now the felpros are more than fine
Safety Car
Joined: Mar 2017
Posts: 4,206
Likes: 1,325
From: LeClaire Iowa
As was I. Turns out the felpros i mentioned were for a gen 1 sbc. Felpros site mustve glitched since it reccomended it to me for a 94. Just got the right gasket and the ports are 2.08x1.25. A bit smaller than cometic but cometic is backed up 5+ weeks right now. Down the line ill be needing some thick head gaskets from cometic for boost and ill order the larger intake gasket then retouch my porting. For now the felpros are more than fine
