Yes I have a 4:1 FMU. I am using the Vortech 8 rib conversion kit with a 6.875 crank and a 2.75 blower pulley. I have an ASP 7.25 lower pulley but I am hesitant to put it on at this point as I expect I would see 16-18psi and I really dont know how well the motor would react to that. One other thing also is that this is my daily driver/playtoy as well as tow vehicle so while I want it to be peppy I cant get to crazy as I want to stay reliable everyday as well as for those 3 hour one one trips tot he track....yes I said 3 hours ONE WAY. Thunder, Vinton is part of Roanoke. |