CBM MOTORSPORTS™ PRO-X™ CNC PORTED 6 BOLT LS3 CYLINDER HEADS COMPLETE WITH ROCKERS

CBM Motorsports™ Pro-X™ CNC Ported 6 Bolt LS3 Cylinder Heads Complete with Rockers

• Brand: CBM Motorsports
• Part Number: CBM-PROX-C-WR-6
• Other Part Number: PROX-C-WR-6
• Part Type: Cylinder Heads
• Cylinder Head Style: Complete with rockers
• Assembly Required: No
• Cylinder Head Material: Aluminum
• Cylinder Head Finish: Natural
• Combustion Chamber Volume (cc): 70cc
• CNC-Machined Combustion Chamber: Yes
• Intake Runner Volume (cc): 280cc
• Exhaust Runner Volume (cc): 105cc
• CNC-Machined Intake Runner: Yes
• CNC-Machined Exhaust Runner: Yes
• Combustion Chamber Style: Open
• Intake Port Shape: Rectangular
• Intake Port Location: Standard
• Exhaust Port Shape: D-port
• Exhaust Port Location: Standard
• Valve Seats Machined: Yes
• Steam Holes Drilled: Yes
• Oiling Style: Through Pushrod
• Heat Crossover: No
• Accessory Bolt Holes Drilled: Yes

Complete with Rockers Includes

• Cylinder Heads
• Intake Valves
• Exhaust Valves
• Valve Springs
• Damper Spring
• Retainers
• Locks
• Valve Stem Seals
• Rocker Arm Studs
• Rocker Arms
• Rocker Arm Nuts
• Guideplates
• Valve Guides

Notes

• Quantity: Sold In Pairs
• In Store Pickup: Colton, CA, USA

CBM/R.E.V. Lightweight Stainless Steel Intake Valves.

• Head Diameter: 2.200"
• Stem Diameter: .3133"
• O/A Length: 5.453"
• Tip Length: .290"
• Underhead Angle / Radius: 12° x 3/8”
• Margin: .070"
• Seat Width: .100"
• Top of Head: 7° Dish
• Groove Type: Bead Roll
• Valve Material: 21-4n Stainless steel
• Wgt/Grams: 131gms

CBM/R.E.V. Lightweight Stainless Steel Exhaust Valves.

• Head Diameter: 1.600"
• Stem Diameter: .3136"
• O/A Length: 5.453"
• Tip Length: .290"
• Underhead Angle / Radius: 25° x 7/16”
• Margin: .065"
• Seat Width: .100"
• Top of Head: 18° Dish
• Groove Type: Bead Roll
• Valve Material: 21-4n Stainless steel
• Wgt/Grams: 102gms

Manley Professional Valve Springs.

• Max Valve Lift: .700"
• OD: 1.550”
• ID: .725"
• Installed Pressure: 225 @ 1.950”
• Open Pressure: 580 @ 1.250”
• Rate (lbs/in): 507
• Coil Bind: 1.190"
• Wgt/Pr: 159gms

Manley Titanium Retainers.

• Valve Spring Diameter: 1.550”"
• Degree: 10°
• Dimension A: 1.500”
• Dimension B: 1.105”
• Dimension C: .710”
• Height: std.

Manley I.D. Valve Spring Locator's.

• Locator ID: .570”
• Locator OD: 1.535”
• Thickness: .062"
• Wall Shoulder Height: .140"
• Shoulder Diameter: .720"

Manley Machined Valve Locks.

• Valve Stem Diameter: 0.311"
• Groove Type: Bead Loc
• Angle: 10°
• Wgt/Pr: 3.9gms

Jesel Pro Aluminum Series Rocker Arms.

• Type: Shaft Roller
• Material: Jesel 7000 Series.
• Finish: Shotpeened.
• Mounting Hole: 7/16”
• Rocker Ratio: 1.75”/1.75”
• Rocker Body: Standard Slot 1.650 Pivot BB Rocker
• Wgt/Pr: 202gms

Download specifications and flow sheet here.

Designed for LS style engines with a 4.065” or larger bore and LS3/L92 intake ports.

CBM Motorsports™ products are warranted to be free from defects in material and workmanship for a period of 90 days from the date of purchase. CBM Motorsports™ electronic components and products are warranted to be free from defects in material and workmanship for a period of 30 days from the date of purchase. If the any part does not meet the limited warranty criteria an RMA number will have to be initiated to set up an exchange or refund.

The part must be returned to CBM with an RMA number assigned to it, and if it is in acceptable condition, CBM will issue credit directly to the customer. In addition, CBM Motorsports™  limited warranty specifically does not apply to products which have been modified or altered in any way, subjected to adverse conditions such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water, corrosion or faulty repair, or used in racing activities or competitive  applications other than those recommended by CBM Motorsports™ . This warranty does not warrant and disclaims all liability for products used in racing activities and/or applications, other than those specifically recommended by CBM Motorsports™.