why cant i put a 50/47 helix in my 2001 machz and pull the same rpms off the line its fine but when its gets going rpms fall off am i not loading the engine more with the 47/44 that i have now would i have to change the ramp profile or put a stiffer spring didnt the 98 machz have a 50/47 in it stock ive got 293x ramps pink/white spring 23gram goodwin pins clickers on 2 rpms now is about 8100 with 1.5 track and 26-44 gears just thought that with the 50/47 i had in stock would up shift faster but when i tryed it in and gun it rps go to arround 8200 but fall off to 7 tho something any suggestions thanks for all the help you guys are very helpful SWRules :christmas:

I am not a clutching guru like some of the guys here but the 50/47 will shift out faster than the 47/44 putting a greater load on the motor. You can either put a higher finish rate primary or take some weight out if you want to run that helix. If dynamoe joe replys he can explain it better.

try a 50 that extra angle should hold your rpms at the other end! that is a great cam to tune IMO

I would try dropping about 4 grams off the pins and try a set of 286 ramps. I also think a 50/44 helix would do a better job for the Mach.

why go with the 286 ramps what is wrong with 293x thay seem more layed back on top for more pressure ontop speed ive been trying things but cant seem to get a setup that i like last year on radar i got 179kph on mabe arround 1/4 mile witch i calculatedto be 0.93 overdrive cant seem to get top speed my friends srx is keeping up with me he has some mods but he still only has a 700 got lots ove parts got all skidoo springs 10 sets ove ramps 2 rer secondarys 4 primarys i want to prep some setups before i go out to test with the expearience that you guys have i wont be wasting my time or wont be trying things that dont work would a 27 top gear kill the enginethanks for ALL the input guys :christmas: SWRules