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The BRODIX Spec. heads are made for tracks wanting cylinder heads that are cost effective and equal for all competitors. These cylinder heads are very durable and user-friendly. Replaceable phosphorous bronze guides are installed along with ductile iron seats. The Spec. head is 100% CNC machined. Do not cut spring seats any larger or deeper than 1.550.
Contact your local association for exact rules. Please advise BRODIX of your track affiliation.
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SP CH
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Intake Port
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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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SP CH*
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215 cc
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2.080/1.600
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Straight/Angle
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Standard
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Standard
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See Rule Book
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SP FO*
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195 cc
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2.080/1.600
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Angle
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"N" Style
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53/119
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See Rule Book
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SP MO*
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192 cc
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2.080/1.600
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Angle
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Standard
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Standard
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See Rule Book
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* Available in several versions to comply with rule requirements.
Please advise BRODIX sales staff of you track affiliation when ordering heads.
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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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0.650
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0.700
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SP CH
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2.080 Intake
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121
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176
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223
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249
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261
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265
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269
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1.600 Exhaust
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92
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134
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158
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172
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179
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182
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182
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SP FO
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2.080 Intake
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120
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180
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224
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255
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267
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268
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270
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1.600 Exhaust
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103
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130
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159
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179
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191
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198
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202
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SP MO
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2.080 Intake
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129
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180
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221
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249
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263
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267
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269
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1.600 Exhaust
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119
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160
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182
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190
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195
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196
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198
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• PS CB:
Valve Bowls Blended
• PS MI:
Match Intake Port to FP 1206
(SP CH)
Match Intake Port to FP 1262
(SP FO)
Match Intake Port to FP 1213
(SP MO)
• PS Valve Job:
Competition Valve Job
• Intake Valves:
2.080 x 4.965 o.a.l. - BR 81019
(SP CH or SP FO)
2.080 x 5.065 o.a.l. - BR 60029
(SP MO)
• Exhaust Valves:
1.600 x 4.965 o.a.l. - BR 81021
(SP CH or SP FO)
1.600 x 5.065 o.a.l. - BR 60030
(SP MO)
• 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° Steel - CC 752
• Valve Locks:
10° Jumbo - CC 611
• Rocker Studs:
7/16 - BR 716L, AR RRS -4I
(SP CH or SP FO)
Shaft System Required
(SP MO)
• Guide Plates:
5/16 - CC 4808
(SP CH)
5/16 - BR 289351
(SP FO)
Not Available
(SP MO)
• Valve Seals:
11/32 - US VS529V
SP MO
SP FO
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• Torque Heads:
70 ft-lb With 7/16" Studs
• Torque Rocker Studs:
40-45 ft-lb
(SP CH or SP FO)
• Torque Rocker Shaft:
30 ft-lb (SP MO)
• Intake Gaskets:
FEL-PRO 1206 (SP CH)
FEL-PRO 1262 (SP FO)
FEL-PRO 1213 (SP MO)
• Head Gaskets:
350 - FEL-PRO 1003
(SP CH)
FEL-PRO 1011-1 or FEL-PRO 1011-2
(SP FO)
FEL-PRO 1008
(SP MO)
• Exhaust Gaskets:
FEL-PRO 1406 (SP CH)
(SP CH)
BRODIX MG 1351
(SP FO, "N" Bolt Pattern)
FEL-PRO 1413
(SP MO)
• Head Studs:
ARP 234-4301 (SP CH)
ARP 154-4203 (SP FO)
ARP 144-4204 (SP MO)
• Accessory Bolt Holes Are Drilled Except on SP MO
• 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° (SP CH)
20° (SP FO)
18° (SP MO)
• Angle Milling:
Check Rules for Your Association
• Flat Milling:
.0060 in Per cc
(SP CH or SP FO)
.0055 in Per cc
(SP MO)
• Angle Machining:
Not Available
• Dowel Shift:
Not Available
• Pushrod Slots:
Standard (SP CH)
53/119 Spacing (SP FO)
Special (SP MO)
• Stud Girdle:
Standard, BR 6435
(SP CH)
53/119 BRODIX 6430
(SP FO)
Shaft System Required
(SP MO)
• Rocker Arms:
Standard
(SP CH or SP FO)
Shaft System Required
(SP MO)
• Lifters:
Standard
• Pushrods:
Special Length
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SP CH Bare*
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67 Chamber
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Custom Order
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SP FO Bare*
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67 Chamber
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Custom Order
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SP MO Bare*
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67 Chamber
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Custom Order
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*Please advise BRODIX sales staff of your track affiliation when ordering heads.
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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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