Need Timing Specs for my 1988 OMC Cobra.
I have the manuals for 1987 and 1989 OMC but not one for my particular motor which is 1988 OMC Cobra 5.0, 2 barrel carb Engine # 502APRGDP. Each manual differs in the timing specs for the 5.0 and neither gives the spec for 2 barrel carb (no sure it matters) One manual 86 or higher octane at 10 degrees BTDC . The other manual specs 5 degrees BTDC for 86 octane and 10 degrees BTDC for 89 octane. I typically run the standard unleaded 87 octane. am I over thinking this. Should I set the time at 10 degrees BTDC.
I have the manuals for 1987 and 1989 OMC but not one for my particular motor which is 1988 OMC Cobra 5.0, 2 barrel carb Engine # 502APRGDP. Each manual differs in the timing specs for the 5.0 and neither gives the spec for 2 barrel carb (no sure it matters) One manual 86 or higher octane at 10 degrees BTDC . The other manual specs 5 degrees BTDC for 86 octane and 10 degrees BTDC for 89 octane. I typically run the standard unleaded 87 octane. am I over thinking this. Should I set the time at 10 degrees BTDC.