Throttle body size?

[Bubu]

I keep changing setups in my head so I started buying parts to force myself to one setup.But i have a couple of questions that i need advice on. Throttle size? 90mm, 95 mm or other? Injector size? Are the ID 1000's enough or more than i need? I purchased the efi intake manifold, and will be buying the intake elbow together with the throttle, once i know what size im going with.

Target of 550 & 600 hp mainly street. Its a 340 la. Fuel tech ecu, coil on plug, twin turbos, e85.

Im pretty sure ill keep changing my mind.

Thanks.

 

[1968FormulaS340]

Holley 800 Double Pumper.

 

[67Dart273]

TB should not be that critical. The problem is that if it's vastly oversized, throttle "gearing" becomes a problem. This means that when you barely crack the throttle in physical movement, you will be opening a huge amount of opening. This is made worse if you are using a single barrel body as opposed to (in my case) the progressive 4bbl design my Holley uses.

 

[strokedracer05]

i agree with the 4bbl design i agree with 67dart273 when your that big with a throttle body it does cause problems i had problems tuning with that big of a throttle body and also had part throttle boost problems. you may not on twins but on a single i did