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
| Intake
Swirl |
| lift |
.100
|
.200
|
.300
|
.400
|
.500
|
.600
|
.700
|
| rpm |
370
|
290
|
320
|
450
|
580
|
580
|
-
|
|
| |
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
| Intake
Swirl |
| lift |
.100
|
.200
|
.300
|
.400
|
.500
|
.600
|
.700
|
| rpm |
95
|
35
|
0
|
0
|
140
|
290
|
350
|
|
| |
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
| Intake
Swirl |
| lift |
.100
|
.200
|
.300
|
.400
|
.500
|
.600
|
.700
|
| rpm |
480
|
304
|
330
|
300
|
575
|
700
|
800
|
|
| |
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
| 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
| Intake
Swirl |
| lift |
.100
|
.200
|
.300
|
.400
|
.500
|
.600
|
.700
|
| rpm |
360
|
415
|
160
|
0
|
0
|
185
|
280
|
|
| |
|
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
| Intake
Swirl |
| lift |
.100
|
.200
|
.300
|
.400
|
.500
|
.600
|
.700
|
| rpm |
360
|
415
|
160
|
0
|
0
|
185
|
280
|
|
| |
|
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
| Intake
Swirl |
| lift |
.100
|
.200
|
.300
|
.400
|
.500
|
.600
|
.700
|
| rpm |
65
|
80
|
0
|
155
|
0
|
0
|
-
|
|
