Whipple 2.9?

03dsgdreams

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At what point is it necessary to have the ford racing cobra jet 10 rib supercharger accessory drive, ATI 15% overdrive damper and thump racing billet aluminum belt tensioner? I know its for high boost, high rpm applications but whats considered high boost and high rpm on these motors? Would you have belt slip and tensioner failure on the standard 6 rib set up at say 14-15 psi and 7500 rpm?
:beer:
 

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