we have 2 different ones in both of my SS motors one is a crower which NHRA looked at twice and blessed both times the other is a RPM off shore unit a company for which we distribute dollar for dollar we don't really see much difference between the 2 except for the cost the Crower cost was 3 times as much and took F O R E V E R to get
they both balanced about the same
both increased bearing life
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Alex Denysenko NHRA 3038 SS, 3305 STK - IHRA 6 SS, 330A STK
Moneymaker Racing LaPorte Indiana 219-861-1214
www.moneymakerracing.net