Looks like almost every used Hemi I see for sale has had windows, I even know personally of a team w/ all top of the line parts and keep up w/maintenance and even they have thrown the rods. WHY ?, Is it RPM ?, Too many runs on the rods ? How many is to many ? 20-30-40. 1/8 mile and 1/4 ?. Does one Rod manufacturer get more runs than another ?. If you keep RPM less than 9800 will it make any differance if you spin it to say 10'200. ?. I would like to here from the guys that have been there/Done that and listen to what you have learned or what you would have done differant ? I have run the 481x wedge w/a Screw,Roots, and even Turbo spinning them as high as 9800, Changed my GRP rods every 20 to 30 runs,and even 40 w/upgraded bolts and Rod material. All 1/8 mile and never kicked the rods. So wy do Hemi's seem to throw the rods more so than any other engine ? Thank You . Joe sr.