Originally Posted by JimmySmith
Give us some specifics on engine ,car ,shift rpm and mabe someone can help. Also intended use Later J.Smith 4621 racing
406,SOLID ROLLER CAM,850 HOLLEY,8 INCH CONVERTER,4.56 GEAR,86 SS MONTE CARLO,SHIFT AT 7100 RPM,GO THRU TRAP AT 7100 RPM 128 MPH.