not sure if i can say, wow, amazing,the clutching i got did not pull the rpms it was suppose to,im running the head mod,jeffs jetting, 160-160-162.5 mains,needles in number 4 mag at 2 shims underand mid and pto shims on top,47.5 and 47.5 and 50 on the mag with 2 1/4 turns on screws,i ended up putting the 2 thin washers under the bolt in thecentre and using only the small allen in the heel,still had a hard time pulling over 9000, then i put on my hitech er with the 48-46 helix and a polaris silver blue sec. spring, got the 9200 i was after,pulled to 115 miles per hour,it seemed to babble a bit in the mid range and would take a half second to clean out if i hit it after driving in the mid for a bit,deffinitel will have to play with needles,this thing seems to go but its not going to set the world on fire,can someone tell me where does the allens in the heel make a difference on rpm,when i took the screws out it seemed to make thge whole rpm go up a bit even at the top end, i must say it sound nice at 9200 rpm, the temp wasnt that cold about -10 c. and the plugs were a nice tan, i was also running the br9ecs plugs, would that make any difference on performance then running the 9es plus?
