C4 X JEEP DANA 18/20 6 SPLINE (FULL AUTO)

Advance Adapter

Our Ford C4 adapter to the Dana 18 / 20 is 7.25” in length. The adapter material is 356 T-6 heat treated aluminum alloy and the adapter has a provision for a transmission mount. The adapter kit will include adapter housing, new C4 main shaft, vent plug, gasket, seal, fastening hardware, & adapter instructions.

Transfer case

This adapter assembly will fit any Dana Spicer 18 / 20, Scout version with a 6 tooth female drive gear. The transfer case index to the new adapter will require an index retainer & sealed bearing. Please I.D. the transfer case bore size (3-1/8”) small hole or (4”) large hole for proper retainer. Additional information can be obtained in our on-line catalog, Jeep & Scout Vehicle Section: Transfer Case Information, Jeeps 1941-79.

Transmission

The kit is designed for exclusive use with the Ford C4 automatic transmission. The Ford C4 is a 3 speed transmission was used between 1963-’82. The transmission bellhousing is removable, the overall length measures 17.00”.

Required Options

716001 Large Hole Retainer or

716002 Small Hole Retainer

Bill Of Materials

• ADAPTER- D18/20 TO NEW PROCESS / 51-7700
• ADAPTER- C4 TO D300 / 51-8100
• SHAFT- SPUD GM 27TF X JP 6TM / 52-1300
• SHAFT- C4 OUTPUT WITH GM27 / 52-8200
• VENT ASSY / C4 CASTING USE 303401 / 716061
• GASKET-N.P.208 TRANSFER CASE / 716517
• T.C. GASKET/JEEP or TOY L/C / 716568
• SEAL-TH400/TH350 TO TLC AND 18/20 ADAPTERS / 716700
• H.H.C.S. 3/8 -16 X 1-1/4 (GR5) zinc / 723722
• BOLT 3/8 -16 X 1.00″ SHCS ZINC / 723731
• 3/8 -16 X 1-1/2 S.H.C.S. zinc / 723740
• NUT-NYLON LOCK 7/8 -16 / 728701