what throttle body?

jake2582

New Member
Jan 8, 2007
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tallapoosa
i got a 92' 5.0 5 speed
mods: F-cam, ported/polish early model heads with 1.94/1.60 valves, roller rockers,ported and polished edelbrock performer 5.0 intake, 24lb injectors, bbk longtubes, bassani X-pipe, flowmaster single chamber mufflers, 3.55 gears, and a shot of happy gas later.

after i get it going i am going top get a custom dynotune*
65mm
70mm
75mm

which one?

what will happen if i just buy the 75mm and its too much? anything?