Sorry no GPs today, but if it's any consolation I did have a '64 421 4bbl many years ago.
Anyway our '04 Impala has begun to act up. When starting off from a dead stop or slow roll under average middle-age throttle application occasionally it will "bump" into gear (feels like a stick would if you let the clutch up too quick but just short of chirping the tires).
The wife tells me if it does happen, it typically happens within the first 10 minutes of driving. But the other day it acted up toward the end of a 3 hour highway trip when we got into some traffic.
I'm hoping this will be fixed painlessly before it fails completely, as our nearly identical '00 Impala had the trans done twice in 30k miles. That's my car now so for the time being it's safe and should last a good while longer.Both of these cars were 2nd hand from her mother who only drove them to the Casino on Sundays and went regularly to the dealer for $ervice.