318 small block 302 heads, stock internals, 4bbl intake, Aces tbi and distributor.
I'm having bad stuttering and some times poping out of the exhaust while accelerating almost like the engine is just cutting in and out until 3,500 rpm then it gets better, also engine doesn'twanna pull past 4,300ish could jusy be the old springs tho. Afr is always in rang but some times a bit rich dipping into the low 10s. I've checked timing multiple times and even made multiple map tunes trying to get the timing right as I feel like that is the problem.
static timing is set to 15 btdc and advace at 32-36 when system is first set up which runs okay but it advances as soon as you start accelerating which I thought was odd so I made the map tune to have a timg curve and that made it even worse.
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