Technical ‘63 Impala not running properly

If this motor isn’t healthy and reliable then a reliable,fuel efficient LS is something to consider.

 

If you run old school engines they require maintenance same as newer but may entail more than just a oil change more frequent.
How many days was it at the alignment shop?

 

Not in the 'Traditional Hot Rods' section, it isn't.
LS's belong in the OT..... OK???

 

327 is arguably one of the greatest engines of all time. I have some OT stuff that I like, but I would NEVER put an LS in a '63 Impala. Fix the 327. Probably at this stage put head gaskets on it and go another 100,000 miles.