I had a similiar problem with my car,sbc 383 YS Trim vortech.On the dyno it would seem to hit the rev limiter .Turned out it was blowing out the spark, MSD7al3 Pro power coil,NGK R5724-8 plugs gapped at .030. I closed the gaps to .025 and the problem was gone.This was with 23lbs of boost. Just...