What size is the stock OHV TB?

[Chrisbequick]

I tried a search and couldn't find anything. What size is it? I'm considering a BBK 66mm after I do my exhaust and I 'm trying to figure out if it's worth it. Also, is the stock intake manifold opening large enough for the 66?

-Chris

 

[TheJMan]

The stock OHV throttle body is pretty small, I think it's either 56 or 58mm. My brother put the BBK TB on his 1993 4.0 and it made a huge difference. Much better throttle response, and a cool whooshing sound during hard acceleration.

 

[weepy]

the bbk 66mm is well worth the money, it is a direct bolt on piece, so yes it will fit. I have one on my '99 sport and love it.