70 or 75 mm throttle body????? - Mustang Evolution

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Old 09-30-2004, 12:55 PM   #1
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70 or 75 mm throttle body?????

what size throttle body will i get the best results from70 or 75 mm? i was also thinking about getting a pleunum, which would be best deal for the buck. They all say the same but what do you think is the best. One more thing i noticed is that all the plenum are made for a 75 mm throttle body, will a 70 mm throttle body work with that or do i need to find the same size plenum opening.

news mods coming this week steeda underdrive pullies, and mac prochamber
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99 mustang gt auto vert
mac cold air
mac prochamber
mac cat back
c & l plenum, mac 70 mm throttle body
4.10 gears reinhart sct tuner
17 x 9 bullit chrome rims

vortech v-1, 42 lb injectors,lightning 90mm maf anderson power pipe,
before vortech dynoed 230.8 rwhp, 268.0 rwtp
with vortech 350 rwhp, 340 rwtp
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Old 09-30-2004, 02:44 PM   #2
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Check out www.modulardepot.com There is a big writeup with dyno testing and different throttle body/plenum combos
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Old 09-30-2004, 09:15 PM   #3
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thanks bro there was alot of good stuff there and basically they are all about the same. So i went with the c & l plenum with the mac 70 mm throttle body.
by next week my prochamber, underdrive pullies and plenum w/70 mm throttle body will be on the car. that should be a nice little extra jump with what i already got
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99 mustang gt auto vert
mac cold air
mac prochamber
mac cat back
c & l plenum, mac 70 mm throttle body
4.10 gears reinhart sct tuner
17 x 9 bullit chrome rims

vortech v-1, 42 lb injectors,lightning 90mm maf anderson power pipe,
before vortech dynoed 230.8 rwhp, 268.0 rwtp
with vortech 350 rwhp, 340 rwtp
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Old 11-02-2004, 02:23 PM   #4
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Exclamation So what's the verdict ?

Greg;

I'm in the same boat you were -- did the 70 mm TB and plenum make a sizeable difference in your response and give you a SOTP boost ?

CLiff
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Old 11-02-2004, 03:55 PM   #5
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well honestly, first i went with the c & l plenum and 70 mm tb. I went with that because there is another car just like mine and he was able to run 13.46 in the 1/4 mile with the same bolt ons. so i did and a few people did say that bigger is not always better. and i have stock cam and heads so there was no need for the bigger tb. as far as feeling the difference not really to be honest. but i believe it has helped with tb response and that was what i was basically looking for. i hope that helps. as far as true horsepower to the wheel that set up is like 6 horsepower together. i got my car dynoed like 2 weeks ago and i thought i woulda been a little better than it was but dynos don't lie. hope that helps and let me know if i can help u another way
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99 mustang gt auto vert
mac cold air
mac prochamber
mac cat back
c & l plenum, mac 70 mm throttle body
4.10 gears reinhart sct tuner
17 x 9 bullit chrome rims

vortech v-1, 42 lb injectors,lightning 90mm maf anderson power pipe,
before vortech dynoed 230.8 rwhp, 268.0 rwtp
with vortech 350 rwhp, 340 rwtp
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Old 11-03-2004, 10:51 PM   #6
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Trick Flow's plenum is about 20 bucks cheaper than the C&L. As for them all being specifically designed for a 75 mm tbody, I believe actually the accufab is designed for a 70mm, but will work with a 75 mm. Mac has a polished plenum out now, sells for about 179 and looks like a polished C&L. Real pretty! The 75 mm tbody is supposed to net you about 2 more hp, which you can't even feel, and that is a lot more money for a little bit more hp that you can't feel.
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Old 12-16-2004, 10:56 AM   #7
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Get the trickflow & paint it or have it polished. I got the mac 70 mm t. body & pleniem for 250 bucks! Not bad for around 10 rwhp. :rofl:
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I have an 01GT w/ frpp 3:73's, sportline springs, wms cold-air w/95mm mass-air, (ceramic) BBK equal length headers (ceramic) mac 70mm t. body, trickflow intake plenium, mac pro-chamber, flowmaster catback, Nitto drags, NX N20 150hp jets, & some good predator tuning! Best E.T. 11.79 @ 118.4mph :drive:

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Old 12-18-2004, 07:48 PM   #8
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DONT get a c&l .... they are not the best.... my friends c&l maf made his car idle like CRAP a proM totaly fixed it.
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Old 12-19-2004, 12:44 AM   #9
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I have been running C&L mafs on my GT and my V6 before that, its a good piece, gives you a great hp boost for the money. Pro M does their own electronics, and they aren't known for being consistent at all, C&L uses the Ford electronics, can't get any better than that. I am completely satisfied and my idle is fine. Always has been.
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Old 12-20-2004, 10:58 AM   #10
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I know I wish I bought my c&l instead of pro-m. I think mine is defective.
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I have an 01GT w/ frpp 3:73's, sportline springs, wms cold-air w/95mm mass-air, (ceramic) BBK equal length headers (ceramic) mac 70mm t. body, trickflow intake plenium, mac pro-chamber, flowmaster catback, Nitto drags, NX N20 150hp jets, & some good predator tuning! Best E.T. 11.79 @ 118.4mph :drive:

[IMG]C:\Documents and Settings\jon.straszewski\Desktop\TOP ****y to bar 020.JPG[/IMG]
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