With 245/45s I launched at 1500 (post superchips), 2nd @ 5000 or it would try to blow the tires off (looking at the wall through the windscreen sucks) and 6000 to 6200 3rd and fourth. Haven't been back with the 275 40s and bigger hoops, but the street launches can take more RPM now and the 2nd gear stuff can be done around 6000.
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 03 F250 Power Stroke 4X4
You can't choke the guy who ripped you off online!!
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