lock up torque converter

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ir3333

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..what was the first year for lock up torque converters?
..how would a 1984 Diplomat 318 and 904 differ from a '73 318 and 904?
 
..what was the first year for lock up torque converters?
..how would a 1984 Diplomat 318 and 904 differ from a '73 318 and 904?

Lockups for the 904 started in 1978 for both the leaning tower of power and the 318. A 1973 318 for sure is not a lockup, but the 1984 might be a lockup.

Chrysler used both types of transmissions from 1978 on.

The 727 also started using lockups in 1978 and used both types also.

A converter (factory core) usually has a decal on it. If it's a lockup converter it will have either a square or round decal. The decal typically says LS LOCKUP OR HS LOCKUP. The LS standing for LOW STALL, and HS for HIGH STALL.

Hope this helps.

transman
 
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