NST Underdrive Pulleys?
Over the winter season and my Z being in storage I’m going to do a engine rebuild. I have been using the Stillen underdrive crank pulley and their serpentine belt with no issues Z runs like a top! On my last dyno I seen an improvement of 5hp with the Stillen underdrive crank pulley. For engine rebuild I’m thinking about using the NST underdrive crank and alternator pulleys. Is anyone here currently using the NST underdrive pulley kit? What is your experience and do you see any side effects from using the NST underdrive pulley kit like flicking headlights etc.? Considering using both underdrive pulleys. I searched and did not find the answer I was looking for.
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Mr. Clean
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