87, 89 and 92
Thread Starter
Junior Member
Joined: Jun 2002
Posts: 44
Likes: 0
From: Hawaii
Car: 1992 Z28
Engine: fivepointsevenleeters
Transmission: nothing right now
87, 89 and 92
That's what we have here in HI..with the prices to match
If I have to.......is it safe to use 87 octane? (92 5.7 TPI auto, just headers and a flowmaster/dailydriver)
If I have to.......is it safe to use 87 octane? (92 5.7 TPI auto, just headers and a flowmaster/dailydriver)
Joined: Oct 2002
Posts: 1,866
Likes: 5
From: Salem, NH
Car: 1999 Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: 3.23 10 Bolt
well u probably wont physically notice a difference but i can tell ya that with my lap top looked up to mine the knock counts are fewer and farther between then with lower octane fuel. stick to high test man