11 X™ Series/23°

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[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

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[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
11 STD X	1.600 Exhaust	90	126	158	184	200	204	208
11 SP X	2.080 Intake	133	191	235	272	283	284	285
11 SP X	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
BP 11 SP X (CNC Ported)	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

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[tab title=”Instruction Sheet”]smallblockheadinstructions
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11 X™ Series/23°

Package Heads

Facts and Related Components

BRODIX News

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