8Pro™,8™,10™ and 11/23°

 

 

[tabs title=”” type=””]
[tab title=”Description”]
BRODIX offers all versions of 23° heads ranging from out-of-the-box castings to completely assembled packages. There is a BRODIX head for virtually every small block engine.
Combustion chambers are available in sizes from 56 cc – 67 cc. Valve sizes range from 2.020 to 2.080 depending on bore sizes and valve centerlines. Most of our 23° heads have angled spark plugs, but straight plugs may be installed in some versions upon request. The BRODIX deck surface is the strongest in the industry allowing the use of nitrous and blowers. Hardened valve seats are standard allowing use with unleaded fuels. Phosphorous bronze valve guides assure proper valve guide wear.
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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 1204 (-8 PRO)
Match Intake Port to FP 1206 (-8, -10, -11)

• PS Valve Job:
Competition Valve Job

• Intake Valves:
2.020 x 4.920 o.a.l. – BR 6170DI (-8 PRO)
2.055 x 4.920 o.a.l. – BR 60005 (-8 PRO)
2.080 x 4.965 o.a.l. – BR 81019
(-8 PRO, -8, -10, -11)

• Exhaust Valves:
1.600 x 4.940 o.a.l. – BR 6169DI (-8 PRO)
1.600 x 4.965 o.a.l. – BR 81021 (-8,-10,-11)

• Valve Springs:
1.470 Hydraulic Roller Valve Spring –
CC 987, 125 lb Closed, 325 lb Open,
1.900 Installed Height,
.575 Maximum Lift (-8 PRO)

1.550 Roller Valve Spring – GA 1000,
240 lb Closed, 550 lb Open,
1.950 Installed Height,
.700 Maximum Lift (-8, -10, -11)

• Retainers:
1.430 7° Steel – CC 743 (-8 PRO)
1.500 10° Titanium – MA 2398BR (-8, -10, -11)

• Valve Locks:
10° Jumbo – CC 611

• Rocker Studs:
3/8 – BR 318S (-8 PRO)
7/16 – BR 716L, AR RRS-4I (-8, -10, -11)

• Guide Plates:
5/16 – CC 4808

• Valve Seals:
11/32 – US VS529V

 • Torque Heads:
70 ft-lb• Torque Rocker Studs:
40-45 ft-lb

• Intake Gaskets:
FEL-PRO 1204, COMETIC C5416 (-8 PRO)
FEL-PRO 1206, COMETIC C5414 (-8, -10, -11)

• Head Gaskets:
350 – FEL-PRO 1003, COMETIC C5399
400 – FEL-PRO 1004, COMETIC C5403

• Exhaust Gaskets:
FEL-PRO 1404, COMETIC C5417 (-8 PRO)
FEL-PRO 1406, COMETIC C5415 (-8, -10, -11 STD)
MG 1500, COMETIC C5424 (-8, -10, -11 SP)

• Head Bolts:
MANLEY 42313

• Head Bolt Washers:
MANLEY 42102

• Head Studs:
ARP 234-4301

• Accessory Bolt Holes Are Drilled

• Spark Plug Starting Points:
CHAMPION RN12YC or AUTOLITE 3924
for Pump Gas (-8 PRO)

AUTOLITE 51 or NGK B9ES
for Alcohol (-8, -10, -11)

AUTOLITE 51 or NGK B8ES
for Gas (-8, -10, -11)

• Spring Pockets:
May Not Be Cut Any Larger or
Deeper Than 1.550 (-8 PRO)
1.550 out of the Box,
May Be Cut to 1.625-
No Larger or Deeper (-8, -10, -11)

• Valve Angle:
23°

• Angle Milling:
.0078 in per cc

• Flat Milling:
.0060 in per cc

• Angle Machining:
Not Available

• Dowel Shift:
Not Avaiable

• Pushrod Slots:
Standard

• Stud Girdle:
Standard – BR 6435
40/60 – BR 6440

• Rocker Arms:
Standard

• Lifters:
Standard

• Valve Centerline:
Standard

• Intake Manifold:
HV 1016 (-8 Pro)
HV 1000 Series (-8, -10, -11)

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[tab title=”Head Specification”]

Cylinder Head Specifications

 
Intake Port
Chamber Volume
 Valve Sizes Intake/Exhaust Plug Angle Exhaust
Pattern 		Valve
Centerline 		Intake Manifold
-8 PRO 185 cc 67 cc 2.020, 2.050, 2.080/1.600 Straight/ Angle Standard Standard HV 1016
-8 194 cc 67 cc 2.080/1.600 Straight/ Angle Standard/ Spread Port Standard HV 1000 Series
-10 210 cc 67 cc 2.080/1.600 Straight/
Angle		 Standard/ Spread Port Standard HV 1000 Series
-11 221 cc 67 cc 2.080/1.600 Angle Standard/ Spread Port Standard HV 1000 Series

[/tab]
[tab title=”Head Recommendations”]

Cylinder Head Recommendations

 

 
Cubic Inch
Compression
Camshaft
RPM
Application
-8 PRO 355-406 9.1 Minimum Hydraulic/
Flat Tappet		 3500-6500 Street/Pro Street
-8 355-377 11.0 Minimum Flat Tappet/
Roller		 3800-6800 Short Oval Track/
Bracket Race/
Pro Street
-10 355-406 11.5 Minimum Flat Tappet/
Roller		 4000-7000 Oval Track/
Bracket Race/
Pro Street
-11 377-434 12.0 Minimum Roller 4500-7500 Long Oval Track/
Bracket Race

[/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
-8 PRO 2.080 Intake 134 191 230 240      
1.600 Exhaust 106 135 153 160      
-8 2.080 Intake 134 191 230 240      
1.600 Exhaust 110 139 155 161      
-10 2.080 Intake 145 195 240 253 262 262 262
1.600 Exhaust 110 139 155 161 166 168 168
-11 2.080 Intake 132 188 232 260 256 258 258
1.600 Exhaust 109 138 155 161 166 167 167

[/tab]
[tab title=”Easy Order Numbers”]

Basic Easy Order Numbers

8 PRO Bare Straight Plug 1080000
8 PRO Pkg Straight Plug 1081002
8 PRO Bare Angle Plug 1080001
8 PRO Pkg Angle Plug 1081005
8 SP Bare   1080002
8 SP Pkg   1081012
8 STD Bare   1080003
8 STD Pkg   1081014
10 SP Bare   1100000
10 SP Pkg   1101000
10 STD Bare   1100002
10 STD Pkg   1101003
11 SP Bare   1110000
11 SP Pkg   1111000
11 STD Bare   1110004
11 STD Pkg   1111008

[/tab]
[tab title=”Instruction Sheet”]smallblockheadinstructions
[/tab]
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