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How much air to these throttle bodies shift?

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Old Jan 8, 2001 | 01:27 AM
  #1  
RMK's Avatar
RMK
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Joined: Apr 2000
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Car: 87 IROC
Engine: modded LB9
Transmission: Pro Built 700R4
How much air to these throttle bodies shift?

I'm trying to find out how much air the stock 48mm and a 52mm throttle body would shift. I have been able to find out that a 58mm unit would do about 1000cfm. Anyone know the rest?

Also, is it right that an air foil will add an extra 36 cfm of airflow?

Thanks for the help


Rob

------------------
1987 IROC-Z Auto (LB9)
Black/grey with the stance of a streetfighter

Mods
Custom exhaust. 4 Inch pipe from the headders all the way back to a single muffler at the rear. No Cat.

Future mods:
K&Ns
RAM Air
New Underdrive pulleys-either March performance pulleys or Auto Specialties Performance
Air foil
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Old Jan 8, 2001 | 02:35 PM
  #2  
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From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
The 48mm TB flows about 600 or 650cfm. The 52mm is around 700 or 750cfm.

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
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