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CALL SHANON 507 445 3235 WITH ANY QUESTIONS.
head is available in several port sizes to fulfill our customers’ needs.
Package Heads:
• PS CB: VALVE BOWLS BLENDED • PS MI: MATCH INTAKE PORT TO FP 1263 (WP 12 SP RI, WP 12 SP RI MC) MATCH INTAKE PORT TO FP
1209 (KC 12 SP B, STS 12 SP W B MC) • PS Valve Job: COMPETITION VALVE JOB • Intake Valves: 2.150 X 5.440 o.a.l. - BR 60415 (40/60)
2.200 X 5.440 o.a.l. (70/125) • Exhaust Valves: 1.600 X 5.440 o.a.l. - BR 60044 • 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: SHAFT SYSTEM REQUIRED • Valve Seals: 11/32 - US VS529V
Facts Related Components:
• Torque Heads: 70 ft-lb • Torque Rocker Studs: 40-45 ft-lb • Intake Gaskets: FEL-PRO 1263, ASK FOR COMETIC PART NUMBER (WP 12 SP RI, WP 12 SP RI MC) FEL-PRO 1209 (KC 12 SP B, STS 12 SP W B MC) • Head Gaskets: 350 - FEL-PRO 1003, COMETIC C5399
400 - FEL-PRO 1004, COMETIC C5403 • Exhaust Gaskets: SPREAD PORT - BRODIX MG 52464 (TRIM TO FIT), COMETIC C5424
• Head Studs: ARP 234-4723 (12 pt WITH 3/8 CENTER STUDS) • Accessory Bolt Holes Are Drilled • Spark Plug Starting Points: NGK R5671A-10 FOR ALCOHOL NGK R5671A-9 FOR RACING GAS • Spring Pockets: 1.550 OUT OF THE BOX, MAY BE CUT TO 1.625 - NO LARGER OR DEEPER
• Valve Angle: 15° • Angle Milling: .0065 in PER cc • Flat Milling: .0055 in PER cc • Angle Machining: NOT AVAILABLE
• Pushrod Slots: 40/60, 58/107, 70/125 • Stud Girdle: NOT AVAILABLE • Rocker Arms: SHAFT SYSTEM WITH 40/60, 58/107 OR 70/125
SPACING, CHECK HEADS FOR NTAKE OFFSET 40/60 - TD 2206, JESEL KPS 01204 58/107 - TD 2207
70/125 - TD 22071 • Lifters: .180 OFFSET • Pistons: SPECIAL 15° • Pushrods: SPECIAL LENGTH
• Intake Face Angle: BRODIX 10° STANDARD
Cylinder Head Specifications:
INTAKE PORT CHAMBER VOLUME VALVE SIZES INTAKE/EXHAUST EXHAUST PATTERN VALVE CENTERLINE INTAKE MANIFOLD
WP 12 SP RI 247/262 cc 60 cc 2.150/1.600 Spread Port 40/60 MS 89
WP 12 SP RI MC 262 cc 61 cc 2.170/1.600 Spread Port 58/107 N/A
KC 12 SP B 287 cc 61 cc 2.150/1.600 Spread Port 40/60 HV 1200 / HV 1201
STS 12 SP W B MC 305 cc 69 cc 2.200/1.600 Spread Port 70/125 HV 1200 / HV 1201
Cylinder head recommendations:
CUBIC INCH COMPRESSION CAMSHAFT RPM APPLICATION
WP 12 SP RI 358 - 410 13.5 Minimum Roller 4000-7500 Oval Track / Drag Race With Nitrous
WP 12 SP RI MC 358 - 410 13.5 Minimum Roller 4000-7500 Oval Track / Drag Race With Nitrous
KC 12 SP B 406 - 430 13.5 Minimum Roller 4000-7500 Oval Track / Drag Race With Nitrous
STS 12 SP W B MC 421 - 440 13.5 Minimum Roller 4000-7500 Oval Track / Drag Race With Nitrous
Flow Chart CFM @ 28" H20
VALVE SIZE 0.200 0.300 0.400 0.500 0.600 0.700 0.800
WP 12 SP RI -247 2.150 INTAKE 152 230 284 316 326 330
(CNC Ported) 1.600 EXHAUST 120 170 216 233 240 248
WP 12 SP RI - 262 2.150 INTAKE 150 228 282 322 330 335
(CNC Ported) 1.600 EXHAUST 120 170 216 233 240 248
WP 12 SP RI MC - 262 2.170 INTAKE 155 224 282 329 335 347
(CNC Ported) 1.600 EXHAUST 117 177 218 231 240 247
KC 12 SP B 2.150 INTAKE 155 230 284 320 343 354
(CNC Ported) 1.600 EXHAUST 120 168 216 232 240 247
STS 12 SP W B MC 2.200 INTAKE 159 233 290 334 361 372
(CNC Ported) 1.600 EXHAUST 106 145 190 221 235 247
BASIC EASY ORDER NUMBER:
CALL SHANON 507 445 3235 WITH ANY QUESTIONS.
CONTACT US THE PRICE IS NEGOTIABLE BEST OFFER
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Ships within 48 hours · Estimated delivery Jun 21 - Jun 26
US$40
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