Reading the first postings on this didn't tell us the choke is inoperable. That will ALWAYS result in stumble with a cold engine, regardless of ambient temp, which some have pointed out.
The owner cannot use the '66 choke stove and rod with no manifold heat. You can see from the photos the heat risesr is blocked. I recommend putting an early '60's big Pontiac base on the carb so he can run an electric choke. I've done this on several '66 Tripowers and it works really well. With that, you retain the internal choke pull-off piston AND have an adjustable electric choke.
elephantrider, contact me via PM if you want one of those early bases with the needed choke linkage, electric dial, etc.
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'64 GTO Tripower Hardtop (Wife's Car)
'64 GTO Tripower Post Coupe (My Car)
'99 Bonneville SE Sedan
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