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The BRODIX ST 5.0 cylinder head was developed to fit the Ford Windsor engine.
Out of the box, completely assembled ST 5.0 heads produce a 50 horsepower increase over other stock heads, and the combustion chambers may be milled into the mid 50 cc range. All existing stock 5.0 accessories can be used in the installation of the BRODIX ST 5.0.
A modified version, the BRODIX ST 5.0 R, allows the use of 7/16 Ford roller rockers.
The exhaust ports are raised .500 higher than stock Windsor heads on both versions. The KC CNC ported ST 5.0 R outflows all other heads in its class.
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Intake Port
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Chamber Volume
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Valve Sizes Intake/Exhaust
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Plug Angle
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Exhaust
Pattern
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Valve
Centerline
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Intake Manifold
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ST 5.0
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171 cc
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60 cc
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1.940/1.600
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Angle
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Standard
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53/119
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Small Block Ford
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ST 5.0 R
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171 cc
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60 cc
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1.940/1.600
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Angle
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Standard
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53/119
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Small Block Ford
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KC ST 5.0 R
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185 cc
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66 cc
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2.020/1.600
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Angle
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Standard
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53/119
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Small Block Ford
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Cubic Inch
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Compression
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Camshaft
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RPM
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Application
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ST 5.0
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289 - 347
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9.5 - 10.5
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Hydraulic/ Hydraulic Roller
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2000-6000
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Street/Pro Street
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ST 5.0 R
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289 - 347
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9.5 - 10.5
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Hydraulic/ Hydraulic Roller
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2000-6000
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Street/Pro Street
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KC ST 5.0 R
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289 - 408
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10.5 Maximum
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Hydraulic/ Hydraulic Roller
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2000-6500
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Street/Pro Street
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Valve Size
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0.200
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0.300
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0.400
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0.500
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0.600
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0.700
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ST 5.0
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1.940 Intake
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130
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186
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225
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237
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241
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1.600 Exhaust
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100
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132
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156
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172
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184
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ST 5.0 R
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1.940 Intake
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130
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186
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225
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237
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241
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1.600 Exhaust
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100
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132
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156
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172
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184
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KC SR 5.0 R
(CNC Ported)
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2.020 Intake
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145
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208
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245
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272
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277
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281
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1.600 Exhaust
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119
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150
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179
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198
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209
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216
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• PS CB:
Valve Bowls Blended
• PS MI:
Match Intake Port to FP 1250
• PS Valve Job:
Competition Valve Job
• Intake Valves:
1.940 x 4.920 o.a.l. - BR 60194D
2.020 x 4.920 o.a.l. - BR 6170DI
• Exhaust Valves:
1.600 x 4.940 o.a.l. - BR 6169DI
• Valve Springs:
1.470 Hydraulic Roller Valve Spring -
CC 987, 125 lb Closed, 325 lb open,
1.900 Installed Height
.575 Maximum Lift
• Retainers:
1.430 7° Steel - CC 743
• Valve Locks:
7° - PI PF-555
• Rocker Studs:
7/16 - BR 716L, AR RRS-4I (ST 5.0 R)
• Guide Plates:
5/16 - BR 289351 (ST 5.0 R)
• Valve Seals:
11/32 - US VS529V
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• Torque Heads:
100 ft-lb with 1/2" Studs
70 ft-lb with 7/16" Studs
• Torque Rocker Studs:
30 ft-lb
• Intake Gaskets:
FEL-PRO 1250
• Head Gaskets:
FEL-PRO 1011-1 or
FEL-PRO 1011-2
• Head Studs:
ARP 154-4005 for 289-302,
ARP 154-4203 for 351
• Head Bolts:
ARP 154-3605 for 289-302;
ARP 154-3603 for 351
• Exhaust Gaskets:
FEL-PRO 1487, BRODIX MG 1350
• Accessory Bolt Holes Are Drilled
• Spark Plug Starting Points:
CHAMPION C63CX or AUTOLITE 3922
• Spring Pockets:
May Not be Cut Any Larger or
Deeper Than 1.550
• Valve Angle:
20°
• Angle Milling:
Not Available
• Flat Milling:
.0060 in Per cc
• Pushrods:
Stock Length 6.250; May require
Special Length If Heads Are Milled
• Rocker Arms:
Ford Stock 5.0 Standard Non-Adjustable Rockers
(MOTORSPORTS Part # M6564-B351) for ST 5.0
Any Ford Roller Rockers with
7/16" Rocker Studs for ST 5.0 R
• Stud Girdle:
53/119 - BR 6430
• Air Tube:
Stock Air Tube can be Used with Minor Modifications
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ST 5.0 Bare
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60 Chamber
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1050000
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ST 5.0 Pkg
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60 Chamber
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1051000
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ST 5.0 R Bare
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60 Chamber
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1050001
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ST 5.0 R Pkg
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60 Chamber
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1051004
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KC ST 5.0 R Bare
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66 Chamber
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1058000
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KC ST 5.0 R Pkg
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66 Chamber
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1058100
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KC ST 5.0 R Pkg
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60 Chamber
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1058101
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Phone: (479) 394-1075 • Fax: (479) 394-1996 • 301 Maple • P.O. Box 1347 • Mena, Arkansas 71953
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| Not legal for sale or use on pollution controlled motor vehicles. |
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© 2008 by Brodix, Inc.
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