11 SP X exhaust

11 X™ Series/23°

 

 

[tabs title=”” type=””]
[tab title=”Description”]

The -11X may be purchased with a standard or spread exhaust port. This head is a great 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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[tab title=”Details”]

Package Heads

Facts and Related Components
• 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 (BP 11 SP X)

• Exhaust Valves:
1.600 x 5.065 o.a.l. – BR 60030

• Valve Springs:
1.550 Roller Valve Spring – PAC 1941,
255 lb Closed, 610 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

 • 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

• Valve Centerline:
40/60

• Intake Manifold:
BM 1000 / HV 1000 /
HV 1002 / SE 100 / SE 102

[/tab]
[tab title=”Flow Chart”]

Flow Chart cfm @ 28″ H20

 

  Valve 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
BP 11 SP X
(CNC Ported)		 2.100 Intake 146 203 253 293 314 314 316
1.600 Exhaust 113 149 177 198 228 233 236

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[tab title=”Easy Order Numbers & More”]

Basic Easy Order Numbers

 

Part# Easy
Order #		 Port
Vol.		 Cham.
Vol.		 Int/Ext
Valve 		Spring Seat
Pressure		 Spring
Diam.		 Ret.
ST/TI		 Per
11 SP X Bare
 1110001 225 67         2
11 SP X Pkg
 1111002 225 67 2.080 / 1.600 240 1.550 TI 2
11 SP X Pkg
 1111003 225 64 2.080 / 1.600 240 1.550 TI 2
11 SP X Special
 1119001 Custom Order           2
11 STD X Bare
 1110005 225 67         2
11 STD X Pkg
 1111010 225 67 2.080 / 1.600 240 1.550 TI 2
11 STD X Pkg
 1111011 225 64 2.080 / 1.600 240 1.550 TI 2
11 STD X Special
 1119005 Custom Order           2
BP 11 SP X Bare
 1118000 231 67         2
BP 11 SP X Pkg
 1118100 231 67 2.100 / 1.600 240 1.550 TI 2
BP 11 SP X Pkg
 1118101 231 64 2.100 / 1.600 240 1.550 TI 2
BP 11 SP X Combo
 9991016 231 67 2.100 / 1.600 240 1.550 TI 1

[/tab]

[tab title=”Instruction Sheet”]smallblockheadinstructions

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