Small Block Ford Head Flow Data

  1. Introduction

    2. The following article is broken down into four sections, click on each to link to that section:

    1 - Definitions
    2 - Cast Iron Head Flow Data
    3 - Aluminum Head Flow Data
    4 - Cleveland Style Head Flow Data

    I have tried to combile many different sources of flow bench data so one could see what they could expect from a given set of heads. As new data becomes available it will be added to the charts. To print --> set your printer for "Landscape mode" (i.e. make it print sideways on a page), this should give you all the data.

  2. Cleveland Style Heads

    3. Note: all flows are given in cubic feet per minute (cfm) and taken with a port pressure differential of 28" of water

    Head Casting

    I / E

    Valve

    Size

    Lift

    Port Configuration

    Source

    0.100

    0.200

    0.300

    0.400

    0.500

    0.600

    0.700

    Cleveland 2V

    I

    2.03

    68.5

    142.2

    189.0

    199.5

    196.5

    198.0

    -

    Stock

    Mustang & Fords - Dec. 1999

    Cleveland 2V

    E

    1.67

    57.2

    89.7

    120.2

    143.5

    159.6

    162.7

    -

    Stock

    Mustang & Fords - Dec. 1999

    Cleveland 2V

    I

    2.05

    59

    114

    177

    202

    204

    210

    -

    Stage 3

    Walden’s Pond Website

    Cleveland 2V

    E

    1.65

    45

    83

    117

    150

    170

    179

    -

    Stage 3

    Walden’s Pond Website

    Cleveland 2V

    I

    2.05

    -

    -

    -

    -

    220

    -

    -

    Stage 3

    Tom Moranna

    Cleveland 2V

    E

    1.65

    -

    -

    -

    -

    180

    -

    -

    Stage 3

    Tom Moranna

    2V 2.19 / 1.71

    I

    2.19

    70

    139

    197

    216

    216

    218

    216

    Stage 3

    Walden’s Pond Website

    2V 2.19 / 1.71

    E

    1.71

    54

    102

    142

    166

    178

    181

    181

    Stage 3

    Walden’s Pond Website

    Cleveland 4V

    I

    2.19

    64.3

    115.8

    163.5

    210.0

    246.0

    273.6

    -

    Stock

    Mustang & Fords - Dec. 1999

    Cleveland 4V

    E

    1.67

    66.7

    103.7

    133.8

    154.4

    169.0

    178.4

    -

    Stock

    Mustang & Fords - Dec. 1999

    Cleveland 4V

    I

    2.19

    65

    107

    162

    208

    245

    267

    -

    Stock

    Walden’s Pond Website

    Cleveland 4V

    E

    1.71

    50

    85

    122

    145

    160

    167

    -

    Stock

    Walden’s Pond Website

    C302B

    I

    2.15

    -

    156

    224

    278

    306

    335

    358

    Pro Porter

    Super Ford - Sept. 1991

    C302B

    E

    1.65

    -

    129

    169

    200

    223

    245

    256

    Pro Porter

    Super Ford - Sept. 1991

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