[T3] Engine serial #

[73 squareback Cincy]

I have the engine in my 73 Squareback, But its from my 71 Squareback 
from 1999 with Dual 32PDSIT carbs. im curious where the serial # is on 
the block to verify that its a 71 engine. I still aint satisfied on how 
its running even though i have been changing alittle here and there on 
the ignition system and found a broke spring on one of the air/fuel 
mixture screws.

Im just wondering if my timing is off but it seems like ever since i 
changed my plugs and i did properly gap them its not running the same 
now. it ran better with the 20 year old plugs. so something isnt 
right... I gapped then at .024 the points is at .016 on the nose. 
everything is new now. Even has a .009 distributor that was bought new 
in 1999, and it still sputts when fuel is gaven from a idle. starting to 
think its the carbs. But im unsure on where my timing should be to. i 
never changed that since it sat forever. So it should be where it ran 
last time.

Just some questions. Im trying to figure this out. My Squareback hasnt 
left me stranded though. so i just want it to run that 10-15% better to 
be 100% on a regular drive.

Thanks for any future info.

Chris537


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