Originally Posted by 1project2many Force 3rd by keeping shifter in D position. Trans will not upshift to 4th. Yeah, I know that, I want to keep it from downshifting into 2nd gear so I can get a reading on the dyno as low an RPM as possible.
1995 Chevy C2500 Suburban 5.7 4L80-E, 16197427, BNKM, $31 Hooker Long Tubes headers, dual 2.25" exhuast, mufflers. TBI mods, Moates APU1, TunerProRT, CAI, 4 core radiator
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