Originally Posted By 6PKRTSE
Originally Posted By Cab_Burge
If your wanting to rev your old 426 type Hemiroid motor up past 7000 RPM the Barton and other single rocker per shaft systems are the best way to go up If you want to keep it under 7500 RPM the stock type systems work well for that application, with the proper parts work devil whistling


Mine Petered out at 7900 on motor on the dyno with my little ole street nitrous cam.
How did it peter out, did it quit gaining power or did a part fail? work
I remember when Don Purdhome (SP?) switch from a stock set of pushrods on his 1968 top Fuel dragster at Orange County testing one night to a set of B&B single tapered pushrods and gained 500 RPM, went from 7000 RPM to 7500 RPM boogie
426 Hemiroid motors and their stinking stock valve train can be a real pain to make work well for higher than 7000 RPM shruggy

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)