what is the stock size of throttle body? - Ford Mustang Forum
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post #1 of 26 (permalink) Old 08-16-2006 Thread Starter
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what is the stock size of throttle body?

What is the stock size throttle body on our 94/95 cars and with stock intake but 11psi powerdyne what would be a good upgrade choice 65mm or 70 mm aftermarket t/b? do i need any modification for proper fitment? ease of installation?
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post #2 of 26 (permalink) Old 08-16-2006
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i think stock is 60mm. with 11 psi. you may want to go with a 75mm or at least the 70mm. but i think the 75mm would be the best.
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post #3 of 26 (permalink) Old 08-16-2006
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Yes the stock TB is 60mm. Going to a 75mm TB with a stock intake will not do you any good. A 70mm will do just fine. In all honesty, changing the TB by itself with a stock manifold will not net you much power, even with 11 lbs from a s/c.

1995 Laser Red GT
Kenne Bell Blowzilla (8lbs), GT 40 lower intake, AFR165 heads, Cobra 1.7 rr's, Pro-M 80mm, AFM Power Pipe, CUSTOM TUNE (SCT), 42lb injectors, FRPP pulleys, 70mm throttle body, FRPP 1 5/8" shorties, Bassani cat-x, Bassani after cat, Steeda Tri-ax, Ford 3.55's
Full street oriented Suspension (springs, shocks/struts, uppers/lowers, subframes, diff. cover, Bullitt brakes 13"/11.65", C/C plates, bump steer kit, ......

376rwhp/385rwtq
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post #4 of 26 (permalink) Old 08-16-2006 Thread Starter
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when you say not much power is that like 10-15 hp max?
in your list of mods you have a gt-40 lower intake how bout the upper intake is that gt-40 and how good is the gt-40? i was planning on cobra lower n upper intake dunno yet
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post #5 of 26 (permalink) Old 08-16-2006
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With your set up, I would say 5-8 hp at most. The Cobra upper and GT 40 upper intakes use the same lower intake. I have no upper intake due to the Kenne Bell supercharger that takes the place of it.

1995 Laser Red GT
Kenne Bell Blowzilla (8lbs), GT 40 lower intake, AFR165 heads, Cobra 1.7 rr's, Pro-M 80mm, AFM Power Pipe, CUSTOM TUNE (SCT), 42lb injectors, FRPP pulleys, 70mm throttle body, FRPP 1 5/8" shorties, Bassani cat-x, Bassani after cat, Steeda Tri-ax, Ford 3.55's
Full street oriented Suspension (springs, shocks/struts, uppers/lowers, subframes, diff. cover, Bullitt brakes 13"/11.65", C/C plates, bump steer kit, ......

376rwhp/385rwtq
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post #6 of 26 (permalink) Old 08-16-2006 Thread Starter
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yeah kb i think is the best s/c for our cars hopefully one day i can get my hands on one
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post #7 of 26 (permalink) Old 08-17-2006
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I measured my T/B and it was 58 mm and the intake was 65mm do the 75 or 70 mm T/B will fit or do you need to grind-off the intake manifold.
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post #8 of 26 (permalink) Old 08-17-2006
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They will fit just fine. They will just be larger than the upper intake opening and therefore create turbulence in the intake track.

1995 Laser Red GT
Kenne Bell Blowzilla (8lbs), GT 40 lower intake, AFR165 heads, Cobra 1.7 rr's, Pro-M 80mm, AFM Power Pipe, CUSTOM TUNE (SCT), 42lb injectors, FRPP pulleys, 70mm throttle body, FRPP 1 5/8" shorties, Bassani cat-x, Bassani after cat, Steeda Tri-ax, Ford 3.55's
Full street oriented Suspension (springs, shocks/struts, uppers/lowers, subframes, diff. cover, Bullitt brakes 13"/11.65", C/C plates, bump steer kit, ......

376rwhp/385rwtq
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post #9 of 26 (permalink) Old 08-20-2006
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so the turbulence will help????
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Quote:
Originally Posted by 95STANG_GT
so the turbulence will help????
No, it will not. What you want, idealy, is smooth transistions between mating parts. This promotes smooth air flow. Turbulent airflow will ultimately lead to uneven air disturbution to the cylinders and less power.

1995 Laser Red GT
Kenne Bell Blowzilla (8lbs), GT 40 lower intake, AFR165 heads, Cobra 1.7 rr's, Pro-M 80mm, AFM Power Pipe, CUSTOM TUNE (SCT), 42lb injectors, FRPP pulleys, 70mm throttle body, FRPP 1 5/8" shorties, Bassani cat-x, Bassani after cat, Steeda Tri-ax, Ford 3.55's
Full street oriented Suspension (springs, shocks/struts, uppers/lowers, subframes, diff. cover, Bullitt brakes 13"/11.65", C/C plates, bump steer kit, ......

376rwhp/385rwtq
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Then like my stang uper intake is 65mm is better to install a 65 mm T/B?
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Quote:
Originally Posted by 95STANG_GT
Then like my stang uper intake is 65mm is better to install a 65 mm T/B?
That depends on what you want to do down the road. If you plan on more mods that will make use of a larger TB, then get a 70 or 75mm. Just keep in mind it is not optimal for your stock application and will not generate a noticeable boost in power. A 65mm, however, is optimal for a stock application. It boils down to what your long term plans with your car are.

1995 Laser Red GT
Kenne Bell Blowzilla (8lbs), GT 40 lower intake, AFR165 heads, Cobra 1.7 rr's, Pro-M 80mm, AFM Power Pipe, CUSTOM TUNE (SCT), 42lb injectors, FRPP pulleys, 70mm throttle body, FRPP 1 5/8" shorties, Bassani cat-x, Bassani after cat, Steeda Tri-ax, Ford 3.55's
Full street oriented Suspension (springs, shocks/struts, uppers/lowers, subframes, diff. cover, Bullitt brakes 13"/11.65", C/C plates, bump steer kit, ......

376rwhp/385rwtq
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I was just wondering, what are the typical horsepower gains with a bbk 65mm throttle body ???
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another question is that my brother has a 2000 mustang gt(stock) and i have a 1994 gt with all the mods listed above, i race my brother but he still spanks me, What can i do to drag his @ss... ??

2012 Mustang Gt track pack - stock for now
1994 Mustang GT - not stock
2004 Lancer Evolution 8 RS - 455whp 362tq sold
2003 Dodge Neon SRT4 - 280whp 302tq sold
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Typically, on a near stock application, you will only see about 5 hp at most.

Your brother started out with 45 more hp than you. You will need gears to get a good jump on him and intake/heads to beat him.

1995 Laser Red GT
Kenne Bell Blowzilla (8lbs), GT 40 lower intake, AFR165 heads, Cobra 1.7 rr's, Pro-M 80mm, AFM Power Pipe, CUSTOM TUNE (SCT), 42lb injectors, FRPP pulleys, 70mm throttle body, FRPP 1 5/8" shorties, Bassani cat-x, Bassani after cat, Steeda Tri-ax, Ford 3.55's
Full street oriented Suspension (springs, shocks/struts, uppers/lowers, subframes, diff. cover, Bullitt brakes 13"/11.65", C/C plates, bump steer kit, ......

376rwhp/385rwtq
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