CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.
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.
Package Heads:
• 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
Facts And Related Components:
• Torque Heads: 100 ft-lb WITH 1/2” STUDS 70 ft-lb WITH 7/16” STUDS• Torque Rocker Stands: 30 ft-lb (ST 5.0)
• Torque Rocker Studs: 40-45 ft-lb (ST 5.0 R, KC ST 5.0 R)• 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.
Cylinder Head Specifications:
INTAKE CHAMBER VALVE SIZES PLUG EXHAUST VALVE INTAKE
PORT VOLUME INT./EXH. ANGLE PATTERN CENTERLINE MANIFOLD
ST 5.0 171 cc 60 cc 1.940/1.600 Angle Standard 53/119 Small Block Ford
ST 5.0 R 171 cc 60 cc 1.940/1.600 Angle Standard 53/119 Small Block Ford
KC ST 5.0 R 185 cc 66 cc 2.020/1.600 Angle Standard 53/119 Small Block Ford
Cylinder Head Recommendations:
CUBIC INCH COMPRESSION CAMSHAFT RPM APPLICATION
ST 5.0 289 - 347 9.5 - 10.5 Hydraulic / Hydraulic Roller 2000 - 6000 Street / Pro Street
ST 5.0 R 289 - 347 9.5 - 10.5 Hydraulic / Hydraulic Roller 2000 - 6000 Street / Pro Street
KC ST 5.0 R 289 - 408 10.5 Maximum Hydraulic / Hydraulic Roller 2000 - 6500 Street / Pro Street
Flow Chart CFM @ 28" H20
VALVE SIZE 0.200 0.300 0.400 0.500 0.600 0.700
ST 5.0 1.940 INTAKE 130 186 225 237 241
1.600 EXHAUST 100 132 156 172 184
ST 5.0 R 1.940 INTAKE 130 186 225 237 241
1.600 EXHAUST 100 132 156 172 184
KC ST 5.0 R 2.020 INTAKE 145 208 245 272 277 281
(CNC Ported) 1.600 EXHAUST 119 150 179 198 209 216
Basic easy order numbers:
ST 5.0 Pkg 1051002 Int Vol 171 55 Cha 1.94/1.6 1.47 ST Ret MAKE OFFER PER 2
ST 5.0 Pkg 1051003 Int Vol 171 55 Cha 2.02/1.6 1.47 ST Ret MAKE OFFER PER 2
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