ok i have whats in sig? if i purchase n e of these will i see a increase of like 3-8 rwhp? plus maybe a new intake or a ported intake?
randy

 

48mm with your setup right now...

52mm after your H/C...

58mm after a blower/lots of N20...

 

My buddy Kevin Herbert made 380 through a stock TB, heads, 230/236 Cam in his auto. 52mm might give you some gains, cant hurt, neither would a 58mm.

 

I would go 52mm with your set up, even when combined with a ported intake. You would need to be making some serious power to need a 58mm...I regret having one on my Z28 (see sig). I never got to see how it ran with a 52mm, but I think it would have been a little faster.

 

I don't think a new TB would help you a whole lot. Deffiantly don't get a new intake. If you do anything get the 58mm and port match your intake. That way if you have bigger plans, you didn't just waste your money on a 52mm.

 

what kind of cam did you have? and that was your best? cause im hoping to see mid 12's with my setup with out spray...

 

Those are wussy throttle body's...........

Go with a nice round number like 100mm!
Just don't start up your car with small children close to an open hood.

 

PM 'NOMAD' off of here...he and his wife sell ported stock throttle bodies that they ported to 52mm...$150 and I don't believe they ask for a core...

Mine has worked great for over a year...