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throttle bodies-whats the best bang for the buck?

S

sic40th

New member
can someone tell me which is the best choice as far as what tb to go with.(my blower is not ported). and my mods are below. thanks
 


Bang for the buck, ported stocker is probably better since all you need is a dremel and JB weld. The N* is bigger though, and you'll need a MAF tune either way.
 
The max theoretical flow of a 68 mil TB is 550-600 cfm or so.

Thats what a gen V with a 3.4 will pull in.

So anything past that, larger throttle blade.
 


bluegtp91 said:
Which is like a 3.1-3.2" on a GenIII blower...hence why I say...ported stocker.
Click to expand...

Eh, I've never seen any evidence to suggest the gen III is that much worse, or how much better a gen V is or how porting a gen III affects it.

Vendors won't share either.

Lets use GPF math.
 
On that Matt, the best I can do is give you some unscientific messing around I've done. I ported the hell out of a Gen 3, smoothed and you name it. It helped, really did. Didn't compare with a Gen V though.

Tempwise the Gen V was about 100F cooler than a Gen 3 on the same run. Obviously different engines, both cars run the same though. Even if the airflow is the same (M90 to M90) the cooler charge should make up the difference.
 
matt5112 said:
Eh, I've never seen any evidence to suggest the gen III is that much worse, or how much better a gen V is or how porting a gen III affects it.

Vendors won't share either.

Lets use GPF math.
Click to expand...

Like Bill said, you can't even begin to compare a GenV to a fully ported GenIII.

Get to researching, research man.

You'll see what I mean.
 


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