What torque convertor do I use?

Cardinge72 said

Ok thanks guys I talked to the salesman and he said it was an externally balanced rotating assembly? The 340 is a 69 block according to the casting.stock other than a slight cam. I bought the car a few years back dont know too much about the engine other than that

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correct. "LA360" is external balance. just know that chrysler had more than one "external balance sb's" so "LA360" is important.

if you converter has a weight welded to it...it's not balanced for a 360, since it was behind a 340 originally. If it has no weight, it may be internal, however I still recommend buying a new one, or sending that one off for a re-stall/re-balance