It wasnt the rev limiter. Like i had said it felt as if it was missing..but it was NOT all the time. Just sometimes when I would drop into passing gear. Truck would be warmed up so i know it wasnt the usual break up from a cold engine.
I just got back from running it with the timing advanced 2.5* and it ran fine across the board. Just a touch more "ummph".
Back to the said issue...was going to do plugs until my mech. buddy caught me with a socket in hand and told me to STOP. I didnt know then of the lovely spark plug phenomenon of the 3v's. Thought to myself it could either be a fouled plug missing or a bad coil..but after speaking to a few people i personally ruled those out because it was intermittent....then came the octane switch and i havent seen it since
