Quote Originally Posted by mrmustang
All original 1968 "S" Code convertible running through a C6 automatic transmission made 256hp at the rear wheels on a Dyno Jet chassis dyno in August of 2006. I owned the car at the time, the motor had never been out of the car or apart for that matter and had roughly 52,000 original miles on it.


Bill S.
About the same as the last GT 390 I had on a dyno, right at 270 at the wheels, engine was fresh but stock spec cam and a nice 3 angle valve job....


I'm going to get started on the 428 out of the '66 Bird one of these days, got it out, hot tanked and crack checked ok... Looks like everything will clean up very well at .030....But I'll probably get all carried away on it anyhow!!!!! Gonna take a bunch of torque to make that sled of a 'Bird run strong, it's a tank!!!!!!