70mm throttle body big enough for my supercharged GT?

Skid · 05-07-2002, 05:19 PM

Just got back from Fun Ford Weekend Here in Houston and picked up a new 70mm throttle body for $160. Should I have gotten a 75mm. I'm only pushing about 7 psi now but plan on bumping it up to 11 pounds soon. Anybody out there know if 70mm is enough, or is it the bigger the better. Also plan on getting an 80mm m/f next week. Is this big enough for what I plan to do???
Help me out guy's.

StoplightWarrior · 05-07-2002, 06:34 PM

An 80mm MAF and 70mm Throttle body will be fine for your application. 75 would also work, but 70 will do just as well as long as you're not making 500+hp.

SLOW 97 · 05-08-2002, 08:58 AM

With 7 PSI it should be fine but with 11 PSI your goning to want the bigger T-Body. Go with 75 mm and th 80mm C&L. That will be a good combo for your engine.

Skid · 05-08-2002, 09:24 AM

The guy here are the shop that installed my Supercharger says that I shouldn't need to replace my T/B. He says that he has always ran the stock ones on supercharged applications because there is no real horsepower increase. He said that I should have spent my money on a powerpipe instead. (good for 3 extra PSI). What do you guys think??

SLOW 97 · 05-08-2002, 02:19 PM

I'm not so sure I agree with the guy because yes it's true you won't gain any power from a t-body on a stock engine but on a blown application such as yours you should gain a fair amount of power. A solution to this decision is just buy both!

05-07-2002, 05:19 PM	#1
Skid Registered Member Join Date: Mar 2002 Location: League City, TX Posts: 2	70mm throttle body big enough for my supercharged GT? Just got back from Fun Ford Weekend Here in Houston and picked up a new 70mm throttle body for $160. Should I have gotten a 75mm. I'm only pushing about 7 psi now but plan on bumping it up to 11 pounds soon. Anybody out there know if 70mm is enough, or is it the bigger the better. Also plan on getting an 80mm m/f next week. Is this big enough for what I plan to do??? Help me out guy's. __________________ '99 GT under pressure.

05-07-2002, 06:34 PM	#2
StoplightWarrior Registered Member Join Date: Jun 2000 Location: Nor-Cal Posts: 1,311	An 80mm MAF and 70mm Throttle body will be fine for your application. 75 would also work, but 70 will do just as well as long as you're not making 500+hp. __________________ Black 2000 GT Auto V2-SQ, Full Steeda G-trac Suspension, Baer Brakes, Saleen Body Kit, Corbeau CR1s, Chrome Cobra R's, etc, etc... 341rwhp, 338 torque 1994 Cobra #4343 Bolt on's only... Cofounder of Raccoon Racing

05-08-2002, 08:58 AM	#3
SLOW 97 Registered Member Join Date: Feb 2002 Location: Arlington Heights,IL Posts: 231	With 7 PSI it should be fine but with 11 PSI your goning to want the bigger T-Body. Go with 75 mm and th 80mm C&L. That will be a good combo for your engine. __________________ '97 Laser Red GT Coupe Stock 2V (Pulled Silencer) 4R70W Automatic Ripped off a BLISTERING 15.37@90MPH With a 2.21 60ft Just Installed- K&N Air Filter Coming Soon...... -4.10's -Flowmaster A/T or Magnapack Cat-Back

05-08-2002, 09:24 AM	#4
Skid Registered Member Join Date: Mar 2002 Location: League City, TX Posts: 2	Just talked to the guy who installed it (Maybe wasted my money??) The guy here are the shop that installed my Supercharger says that I shouldn't need to replace my T/B. He says that he has always ran the stock ones on supercharged applications because there is no real horsepower increase. He said that I should have spent my money on a powerpipe instead. (good for 3 extra PSI). What do you guys think?? __________________ '99 GT under pressure.

05-08-2002, 02:19 PM	#5
SLOW 97 Registered Member Join Date: Feb 2002 Location: Arlington Heights,IL Posts: 231	I'm not so sure I agree with the guy because yes it's true you won't gain any power from a t-body on a stock engine but on a blown application such as yours you should gain a fair amount of power. A solution to this decision is just buy both! __________________ '97 Laser Red GT Coupe Stock 2V (Pulled Silencer) 4R70W Automatic Ripped off a BLISTERING 15.37@90MPH With a 2.21 60ft Just Installed- K&N Air Filter Coming Soon...... -4.10's -Flowmaster A/T or Magnapack Cat-Back

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