Now everyone wants to reply! Ah well, this will get me by, then when I'm ready for the 224 I shouldn't have much trouble selling the 220. The thing is the guy on the phone said the 224 will peak out about 6200 or more and the 220 will peak out about 5900. I don't really feel comfortable spinning to 6500 with the 224. Was this guy about right with his numbers?

 

why dont you feel comfortable? and please dont tell me cause of rod bolts. ive seen 7500rpm a few times now and no issues

 

Well next time you may have a piston come out of your hood or the side of oyur block. Russian Roulette isnt a fun game IMO.

220 sounds good on the conservative side. I wouldnt do a cam swap for four more degrees of duration.

 

like i said before ive never heard of these horror stories to i came to this site. Trex cars spinning well over 7k, other similar setups doing the same and never an issue.