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Type: Posts; User: skids72

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  1. 08-31-2010 01:14 PM

    Thread: 70 Monte 454 Fuelie Bad Combo Questions:(

    by skids72
    Replies
    30
    Views
    10,332

    Sorry... I misread that. You have 10.2:1 CR and...

    Sorry... I misread that. You have 10.2:1 CR and 12.5:1 AFR. Still a fairly short cam for that compression. My old 10.2:1 motor I ran 240@.050 and it ran ok on premium but preferred 100 octane and...
  2. 08-31-2010 10:15 AM

    Thread: 70 Monte 454 Fuelie Bad Combo Questions:(

    by skids72
    Replies
    30
    Views
    10,332

    You'll need much higher octane with 12.5:1...

    You'll need much higher octane with 12.5:1 compression and that short duration cam. Even with longer cam you'll want to run standard (110) or at least 100. The oil problem is another story and...
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