DN-9™ Series/9°

BP DN-9™
• 9° Valve Angle
• 540 cc Intake Ports
• 2.520 / 1.800 Valve Sizes
• Flows 588 cfm
• 100% CNC Ported
• 66 cc Combustion Chambers With Titanium Valves
• 70 cc Combustion Chambers With Steel Valves

 

 

The all new DN-9 represents the latest in cylinder head technology. The all new, shallow 9 degree valve angle makes this head the leader in its class. This head features raised 540 cc intake ports that flow over 588 cfm, and exhaust ports that flow over 354 cfm! This head utilizes a newly designed,
efficient combustion chamber that measures 66 cc. The DN-9 also features the most rigid rocker system on the market. This head comes standard with a 2.520 / 1.810 valve combination as well as copper intake/exhaust valve seats. These heads are machined to accept 1.740 valve spring cups and can
be used in conjunction with the BRODIX PM series of manifolds.

Package Heads

Facts and Related Components

• PS CB:
Valve Bowls Blended• PS MI:
Match Intake Port to MG 9001

• PS Valve Job:
Competition Valve Job

• Intake Valves:
2.520 x 6.920 o.a.l., 55° Seat Angle

• Exhaust Valves:
1.800 x 6.550 o.a.l.

• Valve Springs:
1.645 Roller Valve Spring – CC 948,
330 lb Closed, 915 lb Open,
2.100 Installed Height,
.850 Maximum Lift

• Retainers:
1.645 10° Titanium – MA 2001

• Valve Locks:
10° Jumbo – CC 611

• Valve Seals:
11/32 – US VS485V

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

• Intake Gaskets:
BRODIX MG 9001, FLATOUT FG 8414

• Head Gaskets:
4.600 – FEL-PRO 1057, COMETIC C5434

• Exhaust Gaskets:
FEL-PRO 1412

• Valve Cover Gaskets:
BRODIX MG 9000, FLATOUT FG 6143.2

• Head Studs:
Available Exclusively From BRODIX-
BRODIX BR HS/PB 2005 CI BLK (12pt) For Cast Iron Block
BRODIX SK HS PB 2005 (12 pt) For Aluminum Block

• Accessory Bolt Holes Are Drilled

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

• Spring Pockets:
May Not be Cut Any Larger
or Deeper Than 1.750

• Valve Angle:
9° and 4° Intake
5° and 4° Exhaust

• Angle Milling:
Not Available

• Flat Milling:
.0055 in Per cc

• Angle Machining:
Not Available

•Dowel Shift:
Not Available

• Pushrod Slots:
Standard

• Rocker Arms:
Shaft System – T&D 3074

• Lifters:
Standard

• Pistons:
Special 9°

• Pushrods:
Check Pushrod Clearance With Head Installed
on the Engine Block Before Final Assembly

• Intake Manifolds:
PM 1908 / PM 1918

Flow Chart cfm @ 28″ H20

Part Number Valve Size 0.200 0.300 0.400 0.500 0.600 0.700 0.800 0.900
BP DN-9
(CNC Ported)
2.520 Intake 55° 157 239 331 411 484 536 569 586
1.800 Exhaust 55° 119 177 225 269 308 332 347 354

Basic Easy Order Numbers

Part# Easy
Order #
Port
Vol.
Cham.
Vol.
Int/Ext
Valve
Spring Seat
Pressure
Spring
Diam.
Ret.
ST/TI
Per
BP DN-9 Bare
2190000 540 70         1
BP DN-9 Pkg
2191000 540 70 2.520 / 1.800 330 1.645 TI 1
BP DN-9 Pkg
2191001 540 66 2.520 TI / 1.800 TI 330 1.645 TI 1

 

 

2 Comments

  1. Knopf Claude says:

    Good day
    Are the PB 9000 heads also good for a 565 engine or too big. 4500-8000 RPM
    Thank you C. button