Originally posted by Big Jim:
The SVT throttle body is 60 mm and is commonly used on earlier Duratecs, with and without the manifolds. The non SVT throttle body is 54 mm.
The 60mm TB is
only used on the SVT.
The same casting is used on the 3L Duratec's (Taurus), but the machining is completely different and does not work.
All Non-SVT's used a 54mm TB.