Can anyone tell me what the standard motor and trans. for a '66 Riv was? 401 nailhead? 400 TH? Thanks in advance? Norm
1966 45,348 (Includes 5,718 GS Option) Standard: Wildcat 465 425 cu. in. V8 Option: Super Wildcat 425 cu. in. V8 Note:The SUPER WILDCAT option (dual 4bbl) was a dealer option until 3/66. The engine code MZ was stamped on the engine block only after 3/66.