Stock Compression Ratio L98??
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
For 9.5 it should be ok on the lowest, but no higher than midgrade should be necessary.
Only way to be sure is to hook up a scanner and run it and see.
Only way to be sure is to hook up a scanner and run it and see.
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
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Burning Brakes
Joined: Dec 2006
Posts: 936
Likes: 2
From: Tyrone PA
I would make sure the initial timing is set at the factory 6*, may be able to get away with 85 octane by bumping back to 4*, but I wouldn't do it. I am pretty sure 6* timing and 87 octane will work just fine.
