Throttle Body on Ported 18 manifold

[Skyrm_da]

I have a fbo 17 GT. I have an 18 manifold that’s ported. Would I see any benefit from going to a BBK 85mm or 90mm TB? I know there is some tune issues with the GT350 TB and basically zero gains. I’ve spoken to a tuner and they say the same, but I have to think my stock 80mm TB is a restriction vs my intake manifold inlet size of 87mm+. BBK is advertising 8-12hp gain without a tune. Also they say drivability is like stock. Any advice or experiences out there??

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[bluebeastsrt]

Lund told me the after market TBs aren't worth the tuning headaches. My car has always run good. So that advice is good enough for me.

 

[gameovergt]

Just got your stock TB ported. Mine is now 85MM. Cost $185.00.

 

[Skyrm_da]

Just got your stock TB ported. Mine is now 85MM. Cost $185.00.

Who ported your TB??

 

[Bluemustang]

Lund told me the after market TBs aren't worth the tuning headaches. My car has always run good. So that advice is good enough for me.

I choose to believe this as well which is why I won't be messing with my TB.

 

[meauxcg]

 

[WildHorse]

Lund told me

Lund does copy & paste tunes. That's there money maker. They won't sit there and try to make a larger TB work unless your willing to pay BIG BUCKS, then damn skippy it'll make some ponies. What you need to do is find a independant good tuner or another company that's willing to give it a shot. I'd try VMP or STEEDA.

 

[I Bleed Ford Blue]

Why don't you try the ford racing stage 2 power pack? It comes with a factory original 87 mm TB and the gt 350 CAI and a tune straight from the engineers at ford, and comes with a pro-cal device to load the tune. It also boasts a 40 lb ft gain at 1500 rpm. Well worth the 7 bills it will cost you. Considering an aftermarket 85 or 90 mm tb will run you about 500, and a custom tune and dyno session will run you another 500 and that is if you already have a tuning device like an X4 from SCT.

Now I have heard that the 85 and 90 mm tb's are easy to tune for but the 87 is a bitch, but the 87 is about 200 new and is a factory ford part, while the 85 and 90 are 500 plus and are not ford parts and the durability is questionable. For the money the stage 2 power pack is the best bang for the buck, factory parts that are durable and a ford racing tune that actually works quit well.

 

[Shadowdriver]

Plus 1 on the PP2 from Ford-i just did it, an hour of my time , 700 of my dollars and the gains were very well worth it.

 

[K4fxd]

The factory 80mm TB already flows 900 CFM. Unless you have a very tricked out engine or FI, it will never get near that flow.

900 CFM is about 66 lbs per min.

 

[Zelek]

Porting your TB is a waste. Porting your manifold is not. You don't need a bigger TB unless you're forced induction.

The reason Ford does the GT350 TB with the manifold is because it fits without an adapter. It doesn't make more power.

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