Which gas ???
Apr 10, 2006 | 11:02 AM
Thread Starter
Racer
Joined: Jan 2006
Posts: 411
Likes: 2
From: Mt Pleasant SC
Which gas ???
I am sure this was asked before so i apoligize in advance. I have an 89 vert stock do I or should I run high octane gas. Thank you for all the help.
Apr 10, 2006 | 11:11 AM
Drifting
Joined: Oct 2001
Posts: 1,648
Likes: 1
From: Denham Springs Louisiana
I run 92 octane (Exxon preferably) in my 96 Vette. Anything lower will make the valves "knock".
Apr 10, 2006 | 11:16 AM
Race Director
Joined: Mar 2006
Posts: 11,628
Likes: 1
From: Sherwood, Arkansas
92 or better in my '92 here. I have one of those Hypertech chips that a lot of people say is a waste of money, the manufacturer's info said thats all you can run with their chip.
Apr 10, 2006 | 11:36 AM
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
I run 87 unless Im going to the track.
Apr 10, 2006 | 09:16 PM
Drifting
Joined: Dec 2000
Posts: 1,833
Likes: 4
From: Calgary, Alberta
My manual for my '88 says min 91.
Apr 11, 2006 | 02:09 AM
Melting Slicks
Joined: Mar 2006
Posts: 2,599
Likes: 34
From: Grand Rapids Michigan West Michigan Crew
2015 C5 of the Year Finalist
St. Jude Donor '07-'08-'09
im my 96 it says either on the dash or under the fuel dor "premium unleaded fuel only" It also says it in the manual
Apr 11, 2006 | 09:46 AM
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
87 in my 87 for the past 7 years. Run the lowest octane you can without pinging.
Apr 11, 2006 | 10:12 AM
Team Owner
Joined: Feb 2006
Posts: 24,460
Likes: 7
From: sw Ohio
I think L98's only need 87 and nothing higher, but it might depend on whether or not it has aluminum or iron heads. LT1's probably need a higher grade due to the higher compression ratio.
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Top 10 Corvettes Coming to Mecum Indy 2026!
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
10 Revolutionary 'Corvette Firsts' Most People Don't Know
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Jun 15, 2006 | 12:58 AM
Advanced
Joined: Jan 2005
Posts: 92
Likes: 0
From: Cape Coral Florida
my 1986 manual says run 87
Jun 15, 2006 | 03:17 AM
Melting Slicks
Joined: Dec 2005
Posts: 2,587
Likes: 0
Jun 15, 2006 | 07:11 AM
Le Mans Master
Joined: Aug 2004
Posts: 6,479
Likes: 0
From: Ponte Vedra
I also run 92 octane in my 92, but I buy from the cheapest gas station I can find .
