We offer Cummins swap adapters for the Ford ZF6 transmissions used from 1999 to 2008 . These come in two types, the 7.3 bell-housing in 99-02 trucks, and the 6.0/6.4 version from 03+. The 7.3 model will require a crankshaft spacer but the 6.0/6.4 one does not . All adapters use the 6.0/6.4 starter . Some Modifications are needed to use this Adapter with a 7.3 transmission for details Check out this page
The best flywheel for a single disk clutch is a LUK LFW300 flywheel Modified for the correct input shaft bearing. 6205 for 6.0 input or 6303 for the 7.3 transmission input shaft . Most engine machine shops will install this bearing for $50-$75. If you don’t have old adapter mounting bolts we recommend buying flange head M12-1.75 x 40 MM grade 10.9 bolts . We also recommend using a 6.4 starter, there have been some issues with 6.0 starter interference with the 7.3 transmission .
Both ZF6 use the 1.375 input shaft, So there are a lot of 13″ clutch options . LUK 07168 clutch part number being for fairly stock engines.
LUK 07181 is a Cerametallic upgrade clutch for engines that are turned up 250-350hp or heavy towing .
ANYTHING over 350+ hp recommend just buying a clutch and flywheel conversion package from SOUTHBEND
Pricing is $600 shipped for 6.0/6.4 Zf6 , and $500 shipped for 7.3 Zf6
We offer both these Adapters to fit 03+ Cummins CR (common rail) engines also . They are currently special order and are $750 each .