mjorgensen Woodhouse
Enthusiast
Gen5 Heads and cam package release info
The specifications and pricing for the Arrow/ Viper Exchange H/C package have been released.
Camshaft specification:
• Fixed billet camshaft core – 5160 heat treated
• Arrow Custom Grind
• Intake lobe is 234 duration and 0.617” valve lift
• Exhaust Lobe is 242 duration and 0.617” valve lift
• 115 LSA with a +1 degree advance
• Production 5 tooth timing wheel in Gen V position timed in lock pin position
Spring:
• Stock spring will not permit over 0.600” lift so we went to our race proven dual spring that is micro polished
• Permits 0.700” lift
• Higher load to control the spring up to 8400 rpm – required as we are running tight Piston to Valve clearance
• Requires custom spring seat, seal, and retainer
Cylinder Head:
• Increased Intake valve size from 2.080” to 2.125”
• Increased throat size and port volume (297cc / 105cc) on both the intake and the exhaust to take advantage of the increased lift and duration
• Increased flow of about 20 cfm at 0.617” lift.
• New Steel valve with back cut for improved air flow\
Lifters:
• Low travel hydraulic elite link bar lifter (0.050” total travel vs. 0.120” total travel from production)
• Required for Piston to Valve clearance control
• Fits in production machined cylinder block
Pushrods:
• One piece chrome molly thick with tapered ends to fit the current gasket and clear the cylinder head
• Stiffness required for valvetrain control (Piston to Valve)
Thrust Plate:
• Double disc ground CNC machined out of a billet of aluminum bronze plate • Oil slots machined to oil the chain and the sprocket interface
• Proven over the last 5 years in all of our racing applications
Oiling modifications:
• Custom billet plug inserted where the Oil Control Valve was to control the oil to the Front Camshaft journal and the trust plate
Calibration:
• All of the same features OF the Track Pak #1 off-road controller
• Elimination of the VVT system – Software is all developed for Lock – Pin position.
• EXTREMELY CRITICAL TO DO THE LEARN FUNCTION FOR EACH APPLICATION! (tooth error is critical as the window has no room for accommodating edge stack up error).
• DO NOT FLASH ON ANOTHER CAR AND THINK THAT THIS IS GOING TO WORK!!!! MUST BE ON THE CAR WITH THE ENGINE!!!!!!
Performance on the Engine Dynamometer:
• Flywheel horsepower 738 BHP @ 6200 RPM
• Flywheel Torque of 689 Lb-Ft @ 5100 RPM
Parts package $10,991.03 without exhaust if you have your own or you can add a full ARH exhaust for $3000 additional.
Installed pricing at one of the 3 dealers may vary slightly, but all parts pricing will be the same. Heads and cam cores need to be returned to Arrow Racing to avoid core charges, they must be packaged and shipped without damage to avoid the core charge.
Camshaft specification:
• Fixed billet camshaft core – 5160 heat treated
• Arrow Custom Grind
• Intake lobe is 234 duration and 0.617” valve lift
• Exhaust Lobe is 242 duration and 0.617” valve lift
• 115 LSA with a +1 degree advance
• Production 5 tooth timing wheel in Gen V position timed in lock pin position
Spring:
• Stock spring will not permit over 0.600” lift so we went to our race proven dual spring that is micro polished
• Permits 0.700” lift
• Higher load to control the spring up to 8400 rpm – required as we are running tight Piston to Valve clearance
• Requires custom spring seat, seal, and retainer
Cylinder Head:
• Increased Intake valve size from 2.080” to 2.125”
• Increased throat size and port volume (297cc / 105cc) on both the intake and the exhaust to take advantage of the increased lift and duration
• Increased flow of about 20 cfm at 0.617” lift.
• New Steel valve with back cut for improved air flow\
Lifters:
• Low travel hydraulic elite link bar lifter (0.050” total travel vs. 0.120” total travel from production)
• Required for Piston to Valve clearance control
• Fits in production machined cylinder block
Pushrods:
• One piece chrome molly thick with tapered ends to fit the current gasket and clear the cylinder head
• Stiffness required for valvetrain control (Piston to Valve)
Thrust Plate:
• Double disc ground CNC machined out of a billet of aluminum bronze plate • Oil slots machined to oil the chain and the sprocket interface
• Proven over the last 5 years in all of our racing applications
Oiling modifications:
• Custom billet plug inserted where the Oil Control Valve was to control the oil to the Front Camshaft journal and the trust plate
Calibration:
• All of the same features OF the Track Pak #1 off-road controller
• Elimination of the VVT system – Software is all developed for Lock – Pin position.
• EXTREMELY CRITICAL TO DO THE LEARN FUNCTION FOR EACH APPLICATION! (tooth error is critical as the window has no room for accommodating edge stack up error).
• DO NOT FLASH ON ANOTHER CAR AND THINK THAT THIS IS GOING TO WORK!!!! MUST BE ON THE CAR WITH THE ENGINE!!!!!!
Performance on the Engine Dynamometer:
• Flywheel horsepower 738 BHP @ 6200 RPM
• Flywheel Torque of 689 Lb-Ft @ 5100 RPM
Parts package $10,991.03 without exhaust if you have your own or you can add a full ARH exhaust for $3000 additional.
Installed pricing at one of the 3 dealers may vary slightly, but all parts pricing will be the same. Heads and cam cores need to be returned to Arrow Racing to avoid core charges, they must be packaged and shipped without damage to avoid the core charge.
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