02-25-2014, 08:54 AM

Jurassicgto Jurassicgto is offline

Senior Chief

Join Date: Oct 2002

Location: Rossville,TN

Posts: 347

Thanks for shining a light on these. Saw one I'd like to try. Less lsa than sd performance ones leads to peakier hp/torque curves and rougher idle but the 4/7 swap is supposed to help smooth out idle and crank stress along with making more power. Nice to have options and easy click buy now on the Summit web site.

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