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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.
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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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11 STD X
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225 cc
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67 cc
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2.080/1.600
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Angle
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Standard
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40/60
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HV 1000/
HV 1002/
SE 100/
SE 102
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11 SP X
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225 cc
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67 cc
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2.080/1.600
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Angle
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Spread Port
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40/60
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HV 1000/
HV 1002/
SE 100/
SE 102
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KC 11 SP X
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231 cc
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67 cc
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2.100/1.600
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Angle
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Spread Port
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40/60
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HV 1000/
HV 1002/
SE 100/
SE 102
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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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11 STD X
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406 - 430
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12.5 Minimum
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Roller
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4000-7500
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Oval Track/
Drag Race
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11 SP X
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406 - 430
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12.5 Minimum
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Roller
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4000-7500
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Oval Track/
Drag Race
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KC 11 SPX
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406 - 430
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12.5 Minimum
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Roller
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4000-7500
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Oval Track/
Drag Race
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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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11 STD X
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2.080 Intake
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133
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191
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235
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272
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283
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284
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285
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1.600 Exhaust
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90
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126
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158
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184
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200
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204
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208
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11 SP X
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2.080 Intake
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133
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191
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235
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272
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283
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284
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285
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1.600 Exhaust
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103
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137
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166
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188
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201
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206
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211
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KC 11 SP X
(CNC Ported)
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2.100 Intake
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146
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203
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253
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293
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314
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314
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316
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1.600 Exhaust
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113
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149
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177
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198
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228
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233
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236
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• 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
Special Spread Port Exhaust Gaskets Are Available Exclusively From BRODIX®
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• 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
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11 STD X Bare
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Standard Exhaust
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1110005
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11 STD X Pkg
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Standard Exhaust
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1111010
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11 SP X Bare
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Spread Port Exhaust
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1110001
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11 SP X Pkg
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Spread Port Exhaust
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1111002
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KC 11 SP X Bare
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Spread Port Exhaust
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1118000
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KC 11 SP X Pkg
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Spread Port Exhaust
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1118100
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KC 11 SP X Pkg
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Spread Port Exhaust
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1118101
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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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