The -11X may be purchased with a standard or spread exhaust port. This head is the best flowing 23° head out of the box that BRODIX offers. BRODIX recommends this head be installed on a 400 cu in or larger engine. The -11X requires a special stud girdle and longer pushrods. Piston valve notches must be checked for clearance. A valve length of .150 longer than stock is required. The BRODIX deck surface is the strongest in the industry allowing use of nitrous and blowers. Hardened valve seats are standard allowing use with unleaded fuels. Phosphorous bronze valve guides assure proper valve guide wear. When thinking of small block Chevy compatible heads - think BRODIX.
The -11X may not have the spring pockets cut any larger or deeper than 1.550.
Package Heads:
• PS CB: VALVE BOWLS BLENDED • PS MI: MATCH INTAKE PORT TO FP 1206 • PS Valve Job: COMPETITION VALVE JOB • Intake Valves: 2.080 X 5.065 o.a.l. - BR 60029 2.100 X 5.065 o.a.l. - BR 60028 (KC 11 SP X) • Exhaust Valves: 1.600 X 5.065 o.a.l. - BR 60030 • Valve Springs: 1.550 ROLLER VALVE SPRING - GA 1000, 240 lb CLOSED, 550 lb OPEN, 1.950 INSTALLED HEIGHT, .700 MAXIMUM LIFT • Retainers: 1.550 10° TITANIUM - MA 2398BR Valve Locks: 10° JUMBO - CC 611 • Rocker Studs: 7/16 - BR 716L, AR RRS-4I • Guide Plates: 5/16 - BR 5160 • Valve Seals: 11/32 - US VS529V
Facts And Related Components:
Torque Heads: 70 ft-lb • Torque Rocker Studs: 40-45 ft-lb • Intake Gaskets: FEL-PRO 1206, COMETIC C5414 • Head Gaskets: 350 - FEL-PRO 1003, COMETIC C5399 400 - FEL-PRO 1004, COMETIC C5403 • Exhaust Gaskets: STANDARD - FEL-PRO 1406, COMETIC C5415 SPREAD PORT - BRODIX MG 1500 • Head Bolts: ARP 134-3601, MANLEY 42313 • Head Bolt Washers: MANLEY 42102 • Head Studs: ARP 234-4301(12 pt) • Accessory Bolt Holes Are Drilled • Spark Plug Starting Points: NGK R5671A-9 FOR ALCOHOL NGK R5671A-8 FOR RACING GAS • Spring Pockets: MAY NOT BE CUT ANY LARGER OR DEEPER THAN 1.550 • Valve Angle: 23° • Angle Milling: .0078 in PER cc • Flat Milling: .0060 in PER cc • Angle Machining: NOT AVAILABLE • Dowel Shift: NOT AVAILABLE • Pushrod Slots: 40/60 • Stud Girdle: 40/60 - BR 6440 • Rocker Arms: STANDARD Lifters: STANDARD
Cylinder Head Specifications:
INTAKE PORT CHAMBER VOLUME VALVE SIZES INT./EXH. PLUG ANGLE EXHAUST PATTERN VALVE CENTERLINE INTAKE MANIFOLD
11 STD X 225 cc 67 cc 2.080/1.600 Angle Standard 40/60 HV 1000 / HV 1002 / SE 100 / SE 102
11 SP X 225 cc 67 cc 2.080/1.600 Angle Spread Port 40/60 HV 1000 / HV 1002 / SE 100 / SE 102
KC 11 SP X 231 cc 67 cc 2.100/1.600 Angle Spread Port 40/60 HV 1000 / HV 1002 / SE 100 / SE 102
Cylinder Head Recommendations:
CUBIC INCH COMPRESSION CAMSHAFT RPM APPLICATION
11 STD X 406 - 430 12.5 Minimum Roller 4000 - 7500 Oval Track / Drag Race
11 SP X 406 - 430 12.5 Minimum Roller 4000 - 7500 Oval Track / Drag Race
KC 11 SP X 406 - 430 12.5 Minimum Roller 4000 - 7500 Oval Track / Drag Race
Flow Chart CFM @ 28" H20VALVE SIZE 0.200 0.300 0.400 0.500 0.600 0.650 0.700
11 STD X 2.080 INTAKE 133 191 235 272 283 284 285
1.600 EXHAUST 90 126 158 184 200 204 208
11 SP X 2.080 INTAKE 133 191 235 272 283 284 285
1.600 EXHAUST 103 137 166 188 201 206 211
KC 11 SP X 2.100 INTAKE 146 203 253 293 314 314 316
(CNC Ported) 1.600 EXHAUST 113 149 177 198 228 233 236
BASIC EASY ORDER NUMBER:
• 11 STD X Pkg Standard Exhaust 1111010 MAKE OFFER PER 2
• 11 SP X Pkg Spread Port Exhaust 1111002 MAKE OFFER PER 2
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