size of 94 gt stock mass air meter?

Discussion in '1994 - 1995 Specific Tech' started by amplifier28, Jan 25, 2009.


  1. amplifier28

    amplifier28 Member

    Joined:
    Apr 16, 2005
    Messages:
    221
    Likes Received:
    1
    Trophy Points:
    19
    i have a stock 94 gt vert. what is the size of the stock mass air meter?
  2. revhead347

    revhead347 I have face herpes.

    Joined:
    Jun 14, 2004
    Messages:
    6,126
    Likes Received:
    148
    Trophy Points:
    104
    Location:
    Acworth, GA
    Small.

    Kurt
  3. Venom351R

    Venom351R Founding Member

    Joined:
    Apr 27, 2002
    Messages:
    14,148
    Likes Received:
    36
    Trophy Points:
    98
    Location:
    MAINE
    I belive its 65MM
  4. amplifier28

    amplifier28 Member

    Joined:
    Apr 16, 2005
    Messages:
    221
    Likes Received:
    1
    Trophy Points:
    19
    i read somewhere that it was 70 mm. i want to make sure because i want to buy a 75 mm trickflow street intake maifold, 75mm manifold elbow and 75 mm throttle body. i want to match all components as much as possible. if the mass air meter is 70 mm i will stick with stock, but if it is 65 mm then i will buy a larger mass air meter. anybody knows for sure what size the stock air meter is?
  5. Venom351R

    Venom351R Founding Member

    Joined:
    Apr 27, 2002
    Messages:
    14,148
    Likes Received:
    36
    Trophy Points:
    98
    Location:
    MAINE

    They dont all have to match up, you wont gain or lose anything by it. My Throttle body is 75MM and my Mass Air Meter is 97MM. The biggest thing is matching your intake to your throttle body.
  6. amplifier28

    amplifier28 Member

    Joined:
    Apr 16, 2005
    Messages:
    221
    Likes Received:
    1
    Trophy Points:
    19
    thanks! anybody know the size?
  7. Venom351R

    Venom351R Founding Member

    Joined:
    Apr 27, 2002
    Messages:
    14,148
    Likes Received:
    36
    Trophy Points:
    98
    Location:
    MAINE
    whys it matter what the stock size is if your putting an aftermarket one on it anyway?
  8. final5-0

    final5-0 Mustang Master

    Joined:
    Apr 7, 2003
    Messages:
    6,817
    Likes Received:
    3
    Trophy Points:
    79
    Location:
    DFW Texas
    The OEM meter on 94-95 GT's & Cobra's is 70mm :)

    If you are staying fairly mild with your combo like bolt-ons and the like

    You really won't gain much ... if any ... with an aftermarket meter :(

    The same can be said about the tb ;)

    Most of the time ... the aftermarket meters are not as accurate as OEM :Word:

    It is not all that uncommon to see peeps who switch have drivability issues :bang:

    It all boils down to this fact :D

    With just bolt-on's .............
    You ain't movin enough air to overpower the OEM unit

    Many here have done the whole modding thing
    so
    It would be wise for you to share your long term plans

    That way .............
    You can work with the parts that give the best bang for the buck spent :nice:

    Grady
  9. amplifier28

    amplifier28 Member

    Joined:
    Apr 16, 2005
    Messages:
    221
    Likes Received:
    1
    Trophy Points:
    19
    i want to know because if it is 70mm then i stay stock, but if it is 65mm then i might upgrade to a C&L 73mm or a 76mm.
  10. amplifier28

    amplifier28 Member

    Joined:
    Apr 16, 2005
    Messages:
    221
    Likes Received:
    1
    Trophy Points:
    19
    thanks everybody for all the responses!
  11. revhead347

    revhead347 I have face herpes.

    Joined:
    Jun 14, 2004
    Messages:
    6,126
    Likes Received:
    148
    Trophy Points:
    104
    Location:
    Acworth, GA
    If you can get your hands on an old Pro-M, that's the way to go.

    Kurt
  12. HISSIN50

    HISSIN50 "How long does it take to get help in here? SN Certified Technician

    Joined:
    Nov 30, 1999
    Messages:
    31,148
    Likes Received:
    13
    Trophy Points:
    79
    I'm with wise ol' Mr Grady here. Seems to me that you run out of injector before the meter becomes a hindrance anyhow......
  13. Bullitt95

    Bullitt95 Active Member

    Joined:
    Jun 13, 2007
    Messages:
    1,280
    Likes Received:
    24
    Trophy Points:
    39
    Location:
    Al Ain, United Arab Emirates
    The stock MAF housing has a bore of just over 70mm but it has a thick vertical bar running down the middle that's a big hindrance to airflow. If you just grind that away but leave the tube intact where the hot wire sensor sits, it'll improve airflow quite a bit especially if you also remove the mesh screen.
  14. revhead347

    revhead347 I have face herpes.

    Joined:
    Jun 14, 2004
    Messages:
    6,126
    Likes Received:
    148
    Trophy Points:
    104
    Location:
    Acworth, GA
    Already covered this in another thread not too long ago, you can't do that, it will ruin the sample volume.

    Kurt
  15. Stanger007

    Stanger007 Founding Member

    Joined:
    Sep 26, 2001
    Messages:
    2,020
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Baton Rouge, LA
    I've run quite a few H/C/I guys on the stock MAF. Switching to a 90mm Lightning setup was marginally beneficial on the guys spinning above 6k with well flowing heads but overall your money is best put elsewhere.

    What I would do is to probe your MAF with a volt meter and make a couple pulls with the meter set to hold peak or have someone watch - if the voltage is getting 4.9 or above I'd consider upgrading as this is where you'll start seeing a worthwhile difference. If it's around 4.7/4.8 I'd leave it alone unless you're dying to drop some coin. :)

    Wes
  16. Bullitt95

    Bullitt95 Active Member

    Joined:
    Jun 13, 2007
    Messages:
    1,280
    Likes Received:
    24
    Trophy Points:
    39
    Location:
    Al Ain, United Arab Emirates
    That's why I said you don't disturb the "calibration" tube part.
  17. revhead347

    revhead347 I have face herpes.

    Joined:
    Jun 14, 2004
    Messages:
    6,126
    Likes Received:
    148
    Trophy Points:
    104
    Location:
    Acworth, GA
    It has nothing to do with the electronics. The mass air meter is dependent on a certain percentage of the air volume bypassing the sample tube. If you increase the cross sectional area of the meter by removing any material from inside the meter, the total sample volume will change, therefore causing it to give innacurate readings.

    Kurt
  18. maypo59

    maypo59 New Member

    Joined:
    Oct 20, 2003
    Messages:
    194
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Central Kentucky
    Correct. Fluid dynamics 101.
  19. amplifier28

    amplifier28 Member

    Joined:
    Apr 16, 2005
    Messages:
    221
    Likes Received:
    1
    Trophy Points:
    19
    thanks everybody!
  20. blksn955.o

    blksn955.o Founding Member

    Joined:
    Mar 15, 2002
    Messages:
    3,267
    Likes Received:
    0
    Trophy Points:
    66
    Location:
    st.louis mo 314
    If you have a tuning device like the tweecer you can get away cheaper and better. I switched to a 80mm 98gt maf. It does not have the high end airflow the 90mm LMAF does so you get more use out of the curve/transfer and since they are not as "in demand" you can pick them up cheap. I have less than $90 in my maf setup including the cost of the pigtail. With the tweecerR/T great drivability and I know I am good to go with the voltage.

    Granted the stocker has been time and time again known to make good power at the 290-300rwhp mark. I did this just to play around and learn...and have had no issues with a good "middle of the road" maf for little $$$.

Share This Page