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With the carb and ignition installed on the out-of-the-box GMPP 350ci/330HP crate motor, the timing was set to 34 degrees total advance, then the engine was broken in. Once Jeff was confident everything was ready, he did an initial low rpm pull. Everything looked good, so he did a full pull and noticed the air/fuel ratio was off. After a few jet and power valve changes, he got it nailed and clicked off the results listed on the next page. As advertised, the engine laid down 335 hp and 372 lb-ft at the peaks. It was pretty much out of steam at 5,200 rpm, but still not too shabby for a low-buck crate motor.