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FORDMUSCLE.com
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Edelbrock Performer, Performer 5.0, Performer RPM
Cost per pair: $1080
Material: Aluminum
Combustion Chamber Size: 60cc
Hardware: Complete or Bare
Rocker Mount Type: Screw-in studs 3/8" -or- Pedestal mount (Performer 5.0)
Runner Volumes: 170cc int. 60cc exh.
Valve Sizes: 1.90" intake* 1.60" exhaust
50 State Smog Legal: Performer models only

Notes: *Edelbrock offers the 2.02" intake valve on all of the heads. However the intake runner volume however remains at 170cc regardless of the larger valve. Therefore flow gains on the intake side are minimal, Edelbrock data shows only 5 cfm gain at .500 with the larger valve.
Contact: www.edelbrock.com


Edelbrock Performer
Edelbrock Performer
Intake Swirl
lift
.100
.200
.300
.400
.500
.600
.700
rpm
370
290
320
450
580
580
-
Edelbrock Performer Edelbrock Performer Edelbrock Performer
 
Holley Systemax
Cost per pair: $1100
Material: Aluminum
Combustion Chamber Size: 61cc
Hardware: Complete or Bare
Rocker Mount Type: Pedestal mount
Runner Volumes: 175.5cc int. 70.9cc exh.
Valve Sizes: 1.94" intake 1.60" exhaust
State Smog Legal: Yes

Notes: Exhaust ports raised 0.040"
Contact: www.holley.com

Holley Systemax


Holley Systemax
Intake Swirl
lift
.100
.200
.300
.400
.500
.600
.700
rpm
95
35
0
0
140
290
350
Holley Systemax Holley Systemax
 
Ford Racing GT40 X305
Cost per pair: $1200
Material: Aluminum
Combustion Chamber Size: 58cc*
Hardware: Complete or Bare
Rocker Mount Type: Pedestal mount
Runner Volumes: 178cc int. 62cc exh.
Valve Sizes: 1.94" intake 1.54" exhaust
50 State Smog Legal: Yes

Notes: GT40 X303 has 64cc combustion chamber
Contact:
www.fordracing.com


FRPP GT40X305

FRPP GT40X305
Intake Swirl
lift
.100
.200
.300
.400
.500
.600
.700
rpm
480
304
330
300
575
700
800
FRPP GT40X305

 
Brodix 5.0
Cost per pair: $1175
Material: Aluminum
Combustion Chamber Size: 60cc
Hardware: Complete or Bare
Rocker Mount Type: Pedestal
Runner Volumes: 171 cc int. [not listed] cc exh.
Valve Sizes: 1.94" intake 1.60" exhaust
50 State Smog Legal: No

Contact: www.brodix.com


Brodix 5.0

Brodix 5.0
Intake Swirl
lift
.100
.200
.300
.400
.500
.600
.700
rpm
115
140
75
60
250
400
-

 

World Products Windsor Sr.
Cost per pair: $850 iron / $1250 alum
Material: Iron or Aluminum
Combustion Chamber Size: 64cc
Hardware: Complete or Bare
Rocker Mount Type: Screw-in studs 7/16"
Runner Volumes: 200cc int. 64cce exh.
Valve Sizes: 2.02" intake 1.60" exhaust
50 State Smog Legal: Yes

Contact:
www.worldcastings.com

World Sr.


World Sr.
Intake Swirl
lift
.100
.200
.300
.400
.500
.600
.700
rpm
360
415
160
0
0
185
280
World Sr. World Sr.
 

World Products Windsor Jr.
Cost per pair: $850 iron / $1250 alum
Material: Iron or Aluminum
Combustion Chamber Size: 58cc
Hardware: Complete or Bare
Rocker Mount Type: Screw-in studs 7/16"
Runner Volumes: 180cc int. 64cce exh.
Valve Sizes: 1.94" intake 1.60" exhaust
50 State Smog Legal: Yes

Contact: www.worldcastings.com


World Jr.

World Jr.
Intake Swirl
lift
.100
.200
.300
.400
.500
.600
.700
rpm
360
415
160
0
0
185
280
World Jr. World Jr.
 

Trick Flow Twisted Wedge Street
Cost per pair: $1025
Material: Aluminum
Combustion Chamber Size: 61cc
Hardware: Complete or Bare
Rocker Mount Type: Stud mount 3/8"
Runner Volumes: 170cc int. 66cc exh.
Valve Sizes: 2.02" intake 1.60" exhaust
Smog Legal: Yes

Notes: 15 deg. intake valve centerline / 17 deg. exhaust valve centerline (stock is 20 deg. for both valves.) Requires custom pistons or flycutting with cams bigger than 224 deg. / .540 lift.

Contact: www.trickflow.com

TFS

TFS

Intake Swirl
lift
.100
.200
.300
.400
.500
.600
.700
rpm
65
80
0
155
0
0
-

TFS TFS TFS

 

(Strip Heads)
 
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