No dyno or track yet but I have a 331. Thr 302 dyno'd at 307rwhp & the 331 motor makes an a$$ out of the 302. Seat of the pants says at least 30 more hp. I'm running ported TW's, a .550 lift cam, Performer RPM intake & 1 3/4" full lenghts. every thing was the same as the 302 exept the cam. I would like to run a bigger cam, but I have to worry about emissions testing. Bought tthe short block from DSS.
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