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Old 07-13-2014, 09:59 AM   #1
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Gt throttle body on a v6

Looking at a wrecked 5.0 and noticed the throttle body is about 80 mm. Does this plug directly into the same connector as the v6 throttle body and would it work like the bbk 73mm? 7 mm is not much of a difference and it would make for an inexpensive mod that would give good results.

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Old 07-13-2014, 11:02 AM   #2
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7 mm is pretty big in terms of throttle bodies don't think you would really see that much of a benefit from it especially when your intake is limited to a certain airflow anyway. I'm gonna take a guess here and say an 80mm tb won't even work properly/ fit on your v6.
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Old 07-13-2014, 11:40 AM   #3
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Yeah but the housings are nearly the same size. The location of the connector is different but it would match up. I am curious what would be the result of an 80mm. Would the engine be smooth, jumpy, bog down, etc. I really just see it hard to justify 400 bucks on a 73mm when a gt has an 80 and they are easily available for cheap. The intake manifold opening behind the throttle body is 80mm wouldn't matching it be better

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Old 07-13-2014, 11:50 AM   #4
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OEM 3.7 tb should be fine unless you go FI
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Old 07-13-2014, 11:51 AM   #5
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What's the gains of going bigger though? The dyno results show descent gains unless they are bs

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Old 07-13-2014, 11:59 AM   #6
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You simply just won't see any gains or be able to utilize are larger tb until you start adding a lot more power. This topic has been covered before in the 3.7 section.
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Old 07-13-2014, 12:01 PM   #7
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Even if you were to swap it, without a custom tune to accommodate for more airflow it'd just be a paperweight.
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Old 07-13-2014, 12:10 PM   #8
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It's a 5.0 tb swap discussion not a 73mm like bbk sells. 50$ is a cheap mod if the gains are little or if I can use it and then be ready for a pro charger

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---------- Post added at 11:10 AM ---------- Previous post was at 11:09 AM ----------

I am tuned by the way and would get it retuned

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Old 07-13-2014, 01:10 PM   #9
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Just wondering if it's a straight swap and if it would run with a tune

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Old 07-13-2014, 03:44 PM   #10
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I'm just saying any larger tb in general. Well if you're tuned and it bolts right up, I guess you've got really nothing to lose for a price of $50. I wouldn't know if it would fit or not.

Also, I don't know who tuned your pony, but it may be hard for email tuners to update your tune since the 5.0 tb isn't a common mod. It'd probably have to be re dyno tuned to dial in precision.
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Old 07-13-2014, 04:17 PM   #11
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I got the steeda tune and I love it. It seems really good. I am not sure if they would be able to dial in the tune with a larger throttle body through data logging and emails or not. I would like to keep using them due to here rep and customer service. I ordered the throttle body. It was a from another car but it was actually never even used and it was off a brand new motor so we will see If it bolts up and causes anything to change or not.

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Old 07-13-2014, 04:23 PM   #12
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I wouldn't run it on your car unless you have a proper tune for it first. Should call your tuner and see what they say.
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Old 07-13-2014, 06:18 PM   #13
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Think about it- Think a lot

Unless your going to be racing a lot at upper RPM's the large throttle body will be awful on the street. It would be like putting too big of a carburetor on your engine as was done in the good old days. Great for top end but sure sucked around town.
You probably already know it is really not needed unless you have a way of increasing the amount of air going into the engine to compensate for the larger amount of gas. Probably larger injectors and a good(I mean """GOOD"") Dyno tune to get the mixture right.
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Old 07-13-2014, 06:52 PM   #14
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Quote:
Originally Posted by 14mustang View Post
It's a 5.0 tb swap discussion not a 73mm like bbk sells.
You're the only one who mentioned bbk. Everyone else said that ANY larger tb is really a waste until you go FI. No one's even certain that it's a direct fit. I personally think you would need to modify it or use an adapter of some sort for it to fit, otherwise someone who's already FI would have tried it by now. If you do decide to pick one up, by all means let us know if it fits and how it runs. We're all curious.
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Old 07-13-2014, 07:53 PM   #15
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I definitely will. It is being shipped to me this week. I checked every thing looks to be the same as in connector and bolts. But still it will be an experiment. I do know that the intake manifold is 80mm my theory is that an 80mm tb would actually flow better from intake to manifold without a choke point. I mentioned 73mm bbk early in regards to it being discussed l, but I really think someone had to have tried the stock 5.0 tb by now. Maybe it didn't work and that's why it hasn't been discussed. I know it's not just air in air out but if headers and x pipe are free flowing the intake being more free flowing would help, at least I would think.

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Old 07-13-2014, 07:58 PM   #16
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Well u could always sale it u got it for 50$ and I'm sure it's worth more

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Old 07-13-2014, 08:06 PM   #17
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True. I see them online for 150-250. So I could actually make money and gain some info on this topic for everyone interested in the tb upgrade

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Old 07-14-2014, 11:13 AM   #18
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First off to mount the TB you need an adapter plate.


Secondly the opening to your intake manifold can not be opened to 80mm so that is why it is a waste.
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Old 07-14-2014, 11:25 AM   #19
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The intake manifold opening is 80mm. And the bolt patterns are identical size/shape. The internal bore is what's bigger. This saves money on the assembly line, to have similar parts for all engines and cars ford makes.

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---------- Post added at 10:25 AM ---------- Previous post was at 10:25 AM ----------

What would happen if it were opened to 80mm at the tb?

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Old 07-14-2014, 12:26 PM   #20
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Not sure if it was this forum or Mustang Source but I've asked the same question and to my disappointment I was told up and down it will not work. Bolt it up will require an adapter plate and even once it's on the gains will be little to no notice due to the overall airflow in the 3.7. For you to notice any gain you'll need a full I/H/E bolt on system and FI. It's just not worth the trouble. Explains why this engine has been around almost 5 years and no one's posted testimonials as to this working or even fully tested yet.

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Old 07-14-2014, 12:29 PM   #21
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Ya it was on here:
GT throttle body on V6
GT throttle body on V6

GT throttle body on V6

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Old 07-14-2014, 01:12 PM   #22
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Well I guess I will either keep it or sell it. I plan on a pro charger down the road at some point.

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Old 07-14-2014, 02:22 PM   #23
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If you manage to get it to fit fairly easy let us know. I wouldn't mind seeing how it was done.
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Old 07-14-2014, 02:38 PM   #24
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Will do. I am very curious to see the gains and if it's possible. Much cheaper than 400$ for 73mm, especially if the gains are similar

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Old 07-14-2014, 03:15 PM   #25
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Well the stock TB is approx. 68mm.


You will need an adapter plate to mount the coyote TB.


The opening to the intake manifold is approx. 75mm.


Here is a plate for sale if you are interested and a picture to see how it is mounted......
going to open my throttle body to 70 mm - Technical Discussion - FastFordMuscle.com
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Old 07-14-2014, 03:52 PM   #26
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I used a micrometer from my shop and got a reading of 79.8 on the opening. Oh well. Any idea what brand that adapter plate is and where to get it

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Old 07-14-2014, 04:09 PM   #27
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Please check the link I sent you. The bolt holes don't even line up.


Measure it again as the ones I have seen measure under 75mm.
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Old 07-14-2014, 04:25 PM   #28
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I checked the link. It doesn't say who sells it. I guess I will just join that forum and buy it from that guy if no one but him makes it

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Old 07-14-2014, 04:26 PM   #29
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Theres an assload of throttle bodies and spacers on craiglist in my area for the 3.7

Each one was used for like under a month so im gonna assume that they dont do squat.
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Old 07-14-2014, 04:57 PM   #30
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What area is that? They would be great with a fi setup

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Old 07-14-2014, 05:39 PM   #31
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Toronto canada.
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Old 07-14-2014, 05:40 PM   #32
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What area is that? They would be great with a fi setup

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I think it may have actually been kijiji that i saw it. But same area, toronto.
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Old 07-14-2014, 07:54 PM   #33
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Cananda....damn that's far from me

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Old 07-14-2014, 09:31 PM   #34
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Quote:
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I checked the link. It doesn't say who sells it. I guess I will just join that forum and buy it from that guy if no one but him makes it

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It was custom made for him

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Old 07-15-2014, 07:44 AM   #35
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Correct it was custom made as they are not a production piece.


This is not a spacer but an adapter plate as the GT TB does not mate up with the 3.7 intake manifold.
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