RV6A,  1140#,  13B, RWS EC2, EM2, -B-drive 2.17 to 1 ?  with 20" intake runners,  home made Dynamic Chamber w/curved back,  3" throttle-body from 2000 Cadillac Deville Northstar  4.6L eng.,  exhaust aprox. 2" into  3" X 36" into Hushpower muff.,  standard Cleveland brakes from Vans Aircraft,  at 4700 rpm & aprox. 26 MAP,  I can not hold the aircraft from moving unless I tie it off to my truck & I can go higher in power.      David R. Cook   RV6A Rotary ( transition training nearly complete,   I feel ready to go )