I have a smith and wesson 629-3 6' barrel non fluted cylinder. when was it made?

The S&W 645 was introduced in 1985 and discontinued in 1988.
it seems the gun is between 27-30 yrs old. not sure on a value but ask a local gun shop if you have one near.

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I was not aware that Smith & Wesson made cars or trucks. You might try a weapon board or pawn shop that deals in weapons.

Any particular Smith and Wesson model?

There are a couple different brand names of aftermarket key lock cylinders. LOCKSMART has one for auto transmission and for manual transmission. Part Number LC65620 For the auto, Part Number LC65580 for manual. These are available through Autozone and O'Reilly's. BORG WARNER has makes these also The part numbers are the same. (These are avilable through O'Reilly's and Advance Auto. It may be helpful to let you know that these are probably all manufactured by the same manufacturer that makes the MOTORCRAFT (Ford) cylinders. They just sell to different distributors, who put their names on them.

Note that these are the part numbers for the key and tumbler assembly only. The complete ignition switch assembly ( tumbler, barrel, switch ) is also available through these same suppliers.

Here you go. Hope this works for you.

most likely the ignition cylinder has gone bad cuasing non start and no wheel locking, carefully drive if starts wheel may lock while driving any good lock smith or garage can replace

you need key in and in on position to remove barrel while pressing in lock pin (in hole) in column if cant get key in or turn drill out barrel with under sized drill bit and slowly go up in drill bit size until you can dig out and remove barrel, lock smiths can come to site and do these type of repairs if needed.

remove one of the lock barrels and take to dealer and get key cut to barrel