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Unread 09-22-2002   #1 (permalink)
98blackstang
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Default Size throttle body on my 98 GT?

Anyone know what size it is?Thanks
 
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Unread 09-22-2002   #2 (permalink)
shuterjl is offline Rookie


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Hmmm, doesn't the 98 have a 70 mm throttle body? I know the 2000 GT is that size and thought the 98 was the same.

Of course, I could be wrong
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Unread 09-22-2002   #3 (permalink)
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99-02 gt's have a 65mm TB
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Unread 09-23-2002   #4 (permalink)
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I think the 96-98's either had 65's or 60's. I'll check for sure and post back unless anyone else knows.
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Unread 09-23-2002   #5 (permalink)
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Quote:
Originally posted by hmarv347
99-02 gt's have a 65mm TB
Are you sure? I have a 2000 GT and could have sworn that the TB was 70 mm.
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Unread 09-23-2002   #6 (permalink)
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They aren't.
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Unread 09-23-2002   #7 (permalink)
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Thanks Stalker
 
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Unread 09-24-2002   #8 (permalink)
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if you were to go with a bigger throttle body, would you need bigger injectors? If so, what kind?


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Unread 09-24-2002   #9 (permalink)
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Quote:
Originally posted by StalkerStang
They aren't.
Wow, now I am really

I thought the stock throttle body on the 2000 GT was 70 mm but was restricted down to 60-65mm. And then once I replaced it with a Ford Racing Throttle body, it was a true 70 mm throttle body with no restrictions.

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Unread 09-24-2002   #10 (permalink)
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i placed my stock 65mm TB up against the 70mm and low and behold there is a difference. the stock intake opening where the TB mounts to is already 70mm. the stock TB is where it is reduced to 65mm. Upgradeing to the 70mm you may feel a decrease in low end torque for a slight increase in HP >8HP. I'm probably going back to the stock TB because I want the torque and the 65mm is good till around 400HP, so I've heard.

Search the posts for TB questions and you will see many pro's and con's pertaining to the 70mm TB's

Good Luck!
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2004 DSG Mach 1 w/IUP 5 speed (Born on Date: 10/09/03)
Dyno - 1/28/04 (1300 miles)K&N Drop-in Filter, SAE - 273.8 rwhp 302.5 rwtq
Dyno - 3/6/04 (3400 miles)K&N AirCharger, SAE - 282.5 rwhp 312.6 rwtq
Dyno 4/22/05 304rwhp 326rwtq
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