My 440 rebuild thread

Okay, it's been a while since I've updated the thread, so I thought I'd check in.

I had the heads looked over and the shop said basically all of the valves were leaking. They machined the seats/valves, replaced all the springs, and replaced the rotators for standard retainers. Reinstalled the heads and test drove, and the car runs much better.

Finally I'm able to cruise the interstate! However, the same popping/stumbling/detonation (?) is still occurring, only at a higher RPM (~3400 instead of 2800). At the risk of having too many threads going on about the same engine, I'm going to put this one on pause until I actually decide to to the rebuild.