Air Flow

ALL INFORMATION PROVIDED TO BE USED AS REFERENCE ONLY.  THE PARTS USED IN TESTING ARE UNMODIFIED ITEMS UNLESS OTHERWISE SPECIFIED.  THE DATA HAS BEEN COLLECTED OVER SEVERAL YEARS OF TESTING.  ALL CFM ROUNDED TO THE NEAREST WHOLE NUMBER.

What is CFM? The air flowing through a product is measured in Cubic Feet per Minute, CFM.  It's important to flow test a performance throttle body and find the CFM rating.  A 75mm Brand A throttle body, may not equal the performance of a 75mm Accufab throttle body.

This airflow analysis is important because, basically, an engine is an air pump.  Based on the size of the engine and how fast it will be spinning, it will pump out a certain amount of air. Of course, there are many variables to CFM requirements, such as cylinder head flow capabilities, intake and exhaust manifold flow capabilities, etc... but the basic engine block will pump a certain amount of air over a specified period of time, measured in CFM.  An Accufab throttle body is designed to outflow the stock throttle body, hence, providing more air to the engine for it to utilize accordingly.

PRODUCTS TESTED:

All CFM ratings shown @ 28”:

Buick GN, 1986-1987

65mm – 649 cfm

70mm – 711 cfm

Dodge Viper

RT-10, Gen 1, 1992-1996 – 65mm – 611 cfm each

GTS Gen 2, 1996-2002 – 70mm - 697 cfm each

Chevy LS-1, 1998-1999 and up (with mechanical linkage)

Stock – 798cfm

75mm – 920cfm

90mm – 1369cfm

Ford Mustang 5.0L, 1986-1993

Stock – 495cfm

65mm – 664cfm

70mm – 787cfm

70mm (Race) – 896cfm

75mm – 924cfm

75mm (Race) – 1045cfm

80mm – 1142cfm

85mm – 1322cfm

90mm – 1369cfm

105mm – 1550cfm

Ford Mustang 4.6L, 1996-2004

70mm – 628cfm

75mm – 632cfm

Stock throttle body and plenum – 498cfm

70mm and Accufab plenum – 680cfm

75mm and Accufab plenum – 686cfm

Ford Mustang 5.0L, 2011-2012

84.5mm – 1183cfm

Ford Mustang Cobra, 1996-1998

and Mustang Bullitt, 2001

Stock – 1089cfm

Elliptical Mono Blade – 1284cfm

Oval Mono Blade – 1696cfm

Ford Mustang Cobra, 1999-2001

and Mustang Mach 1, 2003-2004

Dual 60mm – 1147cfm

Ford Mustang Cobra, 2003-2004

and Ford Lightning Pick-up, 1999-2004

Oval Mono Blade – 1696cfm

Ford GT, 2005-2006

Stock – 1590cfm

Dual 75mm – 1807cfm

Oval Mono Blade – 2090cfm 

Accufab 4-Barrel Throttle Body

4150 style - 1215cfm

4500 style – 2128cfm

8500 style – 3600cfm

Mountain Motor “split Dominator style”

Dual 2.75-inches – 1849cfm (per unit)