Originally posted by Dan Nixon:
"something else to think about... shoshop tested tb's for the 3.0L and decided 63mm was the right size for them, you don't think they tried to use a larger tb then 63mm?"
Actually this is a bit odd...
63mm has 31.1 cm2 of flow area or only about 10% more than the 28.3 cm2 flow area of the SVT 60mm
So why only increase TB size 10% with an increase in displacement of 20% (not to mention increased CR, headers, porting/polishing etc)?
Bret, are you SURE they checked larger T.bodies on the dyno. Id guess that if they had, a bigger T.body may work better. But this is just a guess.
by that logic the proper tb size for a 10.0:1 5.0L would be like 100mm...
