4.500 Bore Spacing Series Cylinder Heads/10°/12°/13°

 
 

 

 


The BRODIX 4.500 bore spacing series opens a whole new world of development for the small block Chevrolet compatible engine. This 4.500 bore spacing feature allows for a cylinder bore of 4.250 to be utilized which greatly enhances durability and airflow. This new series offers a variety of different valve angles, port locations, and port sizes. Special components needed for proper installation include: headers, shaft rocker system, sheet metal valve covers, head stud kit, and cam core.

Package Heads

Facts and Related Components

• PS CB:
Valve Bowls Blended

• PS MI:
Match Intake Port

• PS Valve Job:
Competition Valve Job

• Intake Valves:
Call for Options

• Exhaust Valves:
Call for Options

• Valve Springs:
1.550 Roller Valve Spring – IS 9985,
260 lb Closed, 600 lb Open,
1.950 Installed Height,
.700 Maximum Lift

• Retainers:
1.550 10° Titanium – MA 2398BR

• Valve Locks:
CC 611

• Rocker Studs:
Shaft System Required

• Valve Seals:
11/32 – US VS529V

• Torque Heads:
70 ft-lb

• Torque Rocker Studs:
40-45 ft-lb

• Intake Gaskets:
Custom – Hand Fabricated

• Head Gaskets:
Fel-Pro 26476

• Exhaust Gaskets:
Custom – Hand Fabricated

• Valve Cover Gaskets:
COMETIC VC 261188 ML (WP FF 13 STD)

• Head Studs:
SK HS BD 45 (WP BD 4510)
SK HSSB 13/45 (WP FF 13 STD)

• Accessory Bolt Holes Are Drilled

• Spark Plug Starting Points:
NGK R5671A-10 for Alcohol
NGK R5671A-9 for Racing Gas

• Spring Pockets:
1.550 Out of the Box, May Be
Cut to 1.625- No Larger or Deeper

• Valve Angle:
12° (WP BD 4510)
13° (WP FF 13 STD)

• Angle Milling:
.0065 in Per cc

• Flat Milling:
.0055 in Per cc

• Angle Machining:
Not Available

• Pushrod Slots:
Ported are Cut, Unported are Left Uncut

• Stud Girdle:
Not Available

• Rocker Arms:
JESEL or T&D Shaft System –
T&D 22202 (WP BD 4510),
T&D 2291 (WP FF 13 STD)

• Lifters:
.180 All to the Left (WP BD 4510)
.180 (WP FF 13 STD)

• Pistons:
Special 12° (WP BD 4510)
Special 13° (WP FF 13 STD)

• Pushrods:
Special Length

• Intake Face Angle:
BRODIX 5°

• Valve Centerline:
88/184

• Intake Manifold:
Sheet Metal (WP BD 4510)
EDELBROCK 2845 for Standard Deck (WP FF 13 STD)
EDELBROCK 28458 for Tall Deck (WP FF 13 STD)

Flow Chart cfm @ 28″ H20

  Valve Size
0.200
0.300
0.400
0.500
0.600
0.700 0.800
WP BD 4510
(CNC Ported)
2.200 Intake 159 243 307 356 378 390 402
1.600 Exhaust 114 155 196 229 251 258 263
WP FF 13 STD
(CNC Ported)
2.200 Intake 159 238 304 356 377 386 389
1.600 Exhaust 114 155 194 237 253 260 265

Basic Easy Order Numbers

Part# Easy
Order #
Port
Vol.
Cham.
Vol.
Int/Ext
Valve
Spring Seat
Pressure
Spring
Diam.
Ret.
ST/TI
Per
FF 10 STD CNC Bare
1450002             2
FF 13 STD CNC Bare
1450001 290 49         2
WP FF 13 STD Bare
1458001 290 49         2
WP BD 4510 Bare
1458000 292 50         1

 

 

 

 

 

 

 

 

 
 
 

 

 

 

1 Comment

  1. Tony Veresuk says:

    Hello
    Interested in some more info on the 10deg 4.5 bore space wedge head for sbc please. What are the max valve dia. you can install in the offered part #. Also what are the guide spacing centers measurements? Also can the castings be purchased bare with customers own specs on guide spacing? Can you give all info on the #1450002 cc of int. and exh. vol. Max valve dia.’s Flow #’s also offered combustion cc? Thank you
    Tony