I built engine with 4032 flat top pistons, roadrunner rods and the stock crank.

My eaton came with a 2.76 inch pulley on it, which I do not plan to use. I bought a -2 lb lower pulley with the intent of finding a 3.4 inch upper pulley to net around the stock boost level. I'm having trouble finding a 3.4 inch pulley now, so I'm looking at other options. Anyone out there having success with a 3.1 inch pulley and -2 lb pulley, running 93 pump gas? I have a calculated 10.7:1 static compression.

I think a 3.1 and -2 lower equates to about a 3.4 upper and the stock lower pulley. Open to all your experiences to ensure I put the right pulley on this.

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