70 mm vs 65 mm Throttle body

jonesy

New Member
Apr 17, 2005
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has anyone dynoed to see if there is much difference between the two being natualy aspirated? With my mods which is Typhoon intake ( extensively worked over) 65 mm tb, early 351 w heads w/ 2.02 in, 1.60 ex, shorty headers, Mac x pipe, 24 lb inj., underdrive pulleys, F 303 cam, Harlan Sharpe roller rockers, smog deleted,3.73 gears chomping at the bit to try it at the track, ran 14.90 stock w/ the 3.73's launching at 1500. This is a vert and hoping to be in 13's some where. back to my question did anyone ever dyno their car comparing the 2 size tb's?

thx ,

Jonesy Niles , Mi. :shrug:
 
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