Which size throttle body to get?

2fastfox · 06-14-2008

hi guys i need to know what size throttle body to get? i just bot a cobra intake and i have stock motor. later down the road i will be buying heads and cam like gt40x or dart.ex..and maybe 24lb injectors. and depending on what size TB I get do I need to change the MAF or is that only with the injectors? and also with these changes can i stay with stock injectors?

**RLG34750** · 06-14-2008

i would go with a 70mm TB

it will grow with any mods that you wil do....

i would go with 24# injectors the will feed most mods unless you go with a supercharger....

if that is case you will have to change the calibration tube to match the injectors

i sure some of the forced injection guys will chime in....

if i am wrong .....

johnny2350 · 06-14-2008

Go with a 70mm i did that to my car and it made the car more responsive.

04KenneBellGT · 06-14-2008

Yes 70mm is all you need and i would change the MAF anyways. Since you are getting heads and cam i would go ahead and get the 24lb injectors too. If ya get to big of a tb on a n/a car i hear it can actually take away power.

VFAST · 06-14-2008

Iwouldn't buy a t/b til you get the other parts.....I would how ever buy a larger maf right now since it's 5mm small than your stock t/b and is where the intake restriction is on your car at the moment..you can get a 76mm c/l and all you have to do is make a sample tube change when you go to 24's

2fastfox · 06-14-2008

thanks for the info guy but when i run 24lb injector do i need a bigger fuel pump? and also sence i bot the cobra intake i dont need a egr spacer do I?

76Ford90LX · 06-14-2008

Quote:

Originally Posted by VFAST

Iwouldn't buy a t/b til you get the other parts.....I would how ever buy a larger maf right now since it's 5mm small than your stock t/b and is where the intake restriction is on your car at the moment..you can get a 76mm c/l and all you have to do is make a sample tube change when you go to 24's

+1 with vfast
All that stuff would be breathing thru a 55mm hole.
Get a larger MAF housing and do it all at once.

**EagleAutosports** · 06-14-2008

Either way, you won't get much benefit without the other, plan on getting one of them and next payday get the other, then install both.