'55.1 to '59 have a 6 bolt 3.90.

A Bosch type relay can be used as well as a DPDT toggle switch in lieu of the kick-down switch. Here's how I wired mine.



















"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.