whats the best bang for the buck rx 1 mod. clutch??

[Bob Miller]

would being at 2-6 drop the rpms to around 10,200? i thought with stock airbox it was only supposed to hit 10,200. Did you try both settings Bob?Also, what did you used to hit on the dream meter?

2-6 will raise RPM's. The OSO primary will raise your RPM's to 10500-10600 RPM's, the 5/16 lock washers shimming your helix will give you more Top End, the Silver Secondary will eliminate the coil bind that occurs with stock spring, the 14.5 mm rollers will give you stronger accleration. Before these changes the best I had seen was 110-112MPH on the DM!
Once again this info came from blackjohn
I also added 4 TPI valves and 160 mainjets, Green Holtzman springs and the NGK 10 Spark Plugs.
With this set up I run just about dead even with my buddy's 06 Mach Z 8)

 

[jminor1]

Thanks Bob and Black John as well. Trying it tomorrow.

 

[z28rx1]

mctr7,Hey, about the bender rear skid ,the jury is still out on that one. After putting 1100 miles on in the u.p. last week i was not all that happy with it BUT when i got back and took it off the trailer i did find ALOT has changed from the initial set up.So i made the nessisary adjustments and i will let you know what i think after this weekend. Thanx again for the reply on the shimming "Z"