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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-

70mm throttle body upgrade?

  • Thread starter Thread starter 95opelstanggt
  • Start date Start date May 10, 2019
9

95opelstanggt

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#1
  • May 10, 2019
  • #1
Currently have the stock 56mm throttle body on my 95 302. Upgrades in consideration of airflow is a BBK cold air intake, BBK headers, and aftermarket exhaust and mufflers (not positive about the brand, definitely aftermarket with better than stock airflow though). I have a 70mm throttle body laying around, and was wondering if it would be a good idea to throw it on and try it. The car seems to rev pretty slowly from 1000-3000rpm, so i am hoping to find a bit more responsiveness in that area. No internal engine upgrades, thanks.
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
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May 10, 2019
#2
  • May 10, 2019
  • #2
What intake manifold is on the car?

The 70mm prob won't hurt anything if you put it on, but with the stock manifold, it probably won't help either.
 
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95opelstanggt

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  • May 10, 2019
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stock intake manifold.. also have a set of long tube headers that will be installed this summer... I've heard that as little as a cold air intake and long tube headers + exhaust upgrade is enough to compliment the 70mm throttle body regardless of the intake manifold. is this false?
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,236
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May 10, 2019
#4
  • May 10, 2019
  • #4
You still have stock e7 heads. You can only do so much with those plus the stock manifold.

Think of an hourglass. The narrow part is your heads. You can have the biggest TB and exhaust but you can only get so much through the heads/intake.
 

Wayne Waldrep

Before I post a pic, do you have one of yours?
20+ Year Stangneter
Apr 14, 2003
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May 10, 2019
#5
  • May 10, 2019
  • #5
I've ran a 70mm TB since 1989. Stock intake with the hole blended by me....which back then seems scary..lol. Excellent response and zero negatives. Long tubes are overkill. I've made great HP with several engines and never once needed the other 6hp that they give you....not to mention all the pita you pay for that.
 
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95opelstanggt

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  • May 10, 2019
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Mustang5L5 said:
You still have stock e7 heads. You can only do so much with those plus the stock manifold.

Think of an hourglass. The narrow part is your heads. You can have the biggest TB and exhaust but you can only get so much through the heads/intake.
Click to expand...

Thanks apprecaite it
 
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95opelstanggt

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  • May 10, 2019
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95opelstanggt said:
Thanks apprecaite it
Click to expand...
any other thoughts on why i may be slow off the start? was considering buying a custom tune off of american muscle. Car seems to be a bit of a dog off the line. Best 60ft ive put out was about 2.10 seconds i believe. runs 14.6s in the 1/4
 

Wayne Waldrep

Before I post a pic, do you have one of yours?
20+ Year Stangneter
Apr 14, 2003
1,338
659
143
Cuba, AL
May 10, 2019
#8
  • May 10, 2019
  • #8
95opelstanggt said:
any other thoughts on why i may be slow off the start? was considering buying a custom tune off of american muscle. Car seems to be a bit of a dog off the line. Best 60ft ive put out was about 2.10 seconds i believe. runs 14.6s in the 1/4
Click to expand...
What would you be tuning? Isn't it stock?
 
9

95opelstanggt

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Ive read multiple places that tuning can increase performance even if the whole car is bone stock.
 

mikestang63

SN Certified Technician
Aug 27, 2012
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May 10, 2019
#10
  • May 10, 2019
  • #10
95opelstanggt said:
Ive read multiple places that tuning can increase performance even if the whole car is bone stock.
Click to expand...

just burn the money...it will save you wasting time tuning a stock engine...70mm TB won't add anything with stock intake and heads
 
D

Deleted member 215073

May 10, 2019
#11
  • May 10, 2019
  • #11
As far as poor throttle response, what's your base timing set at? Adequate fuel pressure? Good fuel flow? My 100% stock powertrain responds very quick off idle.

A chip is a waste of money. Your stock computer can handle quite a bit before that is necessary.
 
Last edited by a moderator: May 10, 2019

General karthief

wonder how much it would cost to ship you a pair
20+ Year Stangneter
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May 11, 2019
#12
  • May 11, 2019
  • #12
Go to our tech forum and you'll find the 'technical/how to thread'
Lots of info there, start with how to check for codes.
 

Steel1

Mustang Master
Aug 18, 2017
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May 11, 2019
#13
  • May 11, 2019
  • #13
What gears are in it?
If stock, replacing them with a set of 3:55 or 3:73 will make get off the line quicker and feel like it has more power.
 
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