Page 1 of 2 12 LastLast
Results 1 to 10 of 11

Thread: what octane to use?

  1. #1
    JGMACHINE
    Ok guys, I got my boat over the winter and I am going to take it out of storage tomorrow. It has twin 454's 330 HP. What percentage octane do you recommend? The motors are 1990's. Boat is a 1990 IMP 310 Eleganza.
    http://img.photobucket.com/albums/v450/jgmachine/b.jpg

  2. #2
    MudPumper
    If they are stock 454's id just run 91 oct.

  3. #3
    77charger
    87 if for some odd reason it does ping then 91 but i seriously doubt you have any probs on 87 regular

  4. #4
    Dr. Eagle
    87 if for some odd reason it does ping then 91 but i seriously doubt you have any probs on 87 regular
    Exactly...
    No need to pay the big bucks unless you are detonating.

  5. #5
    Burnout
    Unless you are unlike the typical western NY breed......Be sure you do not have detonation. Listen to you engine and have it tuned regularly. As well, use a decent marina for your gas. I have been to many where the gas is crap.....But if you are taking that big momma I saw from another thread (I give you credit for dating such a big woman, to each their own) you will definately need the higher octane to pull that around.

  6. #6
    Beer-30
    Yeah, the 330 HP is a low-perf motor, you should be able to run 87 all the time. Put the extra money into more important things like beer.

  7. #7
    piper
    Yeah, the 330 HP is a low-perf motor, you should be able to run 87 all the time. Put the extra money into more important things like beer.
    Yeah now the beer thing is important, don't be buying no cheap beer.

  8. #8
    cola
    Unless you are unlike the typical western NY breed......Be sure you do not have detonation. Listen to you engine and have it tuned regularly. As well, use a decent marina for your gas. I have been to many where the gas is crap.....But if you are taking that big momma I saw from another thread (I give you credit for dating such a big woman, to each their own) you will definately need the higher octane to pull that around.
    She was hot. :sqeyes:

  9. #9
    HCS
    All the way to the end pump!

  10. #10
    Wonderboy

Page 1 of 2 12 LastLast

Similar Threads

  1. 100 octane
    By v-drive in forum Gear Heads
    Replies: 18
    Last Post: 07-23-2007, 01:11 AM
  2. 89 octane in a 496
    By dunaholic in forum Sandbar
    Replies: 31
    Last Post: 06-13-2007, 08:13 PM
  3. What Octane?
    By GRUNION in forum Sandbar
    Replies: 7
    Last Post: 04-25-2006, 09:16 AM
  4. Octane in 496 H0
    By teeitup in forum Gear Heads
    Replies: 5
    Last Post: 07-15-2004, 07:54 AM
  5. 100 Octane
    By 900rats in forum Gear Heads
    Replies: 14
    Last Post: 09-08-2001, 07:32 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •