Not sure what you mean by "revved out"
My advice is it get a accurate timing setting on it first. Weather that means putting a new timing cover on if the tab is missing, or aftermarket timing tab (not sure if the stock balancer will work with a aftermarket tab since ive seen them before not match. Maybe someone here can verify)
Set the timing to 6 degrees advance with the EST wire unplugged. If it pings bring it down a little bit. Start with that and go from there.
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2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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