They come fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as ARP rockers studs, PAC Racing springs, viton valve seals, AFR adjustable guide plates, machined bead valve locks (not stamped), hardened spring cups our one piece 8mm 21 4N Stainless Steel valves.

Combustion Chamber Volume (cc):
64
Intake Runner Volume (cc):
195cc
Exhaust Runner Volume (cc):
76cc
Cylinder Head Style:
Assembled
Cylinder Head Material:
Aluminum
Intake Port Shape:
Rectangular
Intake Valve Diameter (in.):
2.020 in.
CNC-Machined Combustion Chamber:
No
CNC-Machined Intake Runner:
No
CNC-Machined Exhaust Runner:
No
Combustion Chamber Style:
Heart
Intake Port Location:
Standard
Exhaust Port Shape:
Square
Exhaust Port Location:
Standard
Spark Plug Style:
Straight
Intake Valves Included:
Yes
Exhaust Valves Included:
Yes
Exhaust Valve Diameter (in.):
1.600 in.
Valve Springs Included:
Yes
Maximum Valve Lift (in.):
0.600 in.
Camshaft Style:
Hydraulic roller
Outside Diameter of Outer Spring (in.):
1.290 in.
Damper Spring Included:
Yes
Number of Springs Per Valve:
Dual
Retainers Included:
Yes
Retainer Material:
Chromoly steel
Locks Included:
Yes
Lock Style:
7 degree
Valve Stem Seals Included:
Yes
Rocker Arm Studs Included:
Yes
Rocker Arm Nut Thread Size:
3/8 in.-24
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
Yes
Guideplate Pushrod Size:
5/16 in.
Valve Cover Mounting Style:
Perimeter bolt
Accessory Bolt Holes Drilled:
Yes
Intake Valve Angle:
23
Exhaust Valve Angle:
23
Valve Guides Included:
Yes
Valve Seats Machined:
Yes
Valve Seat Machine Style:
3-angle
Valve Seat Material:
Ductile iron
Cylinder Head Color:
Natural
Steam Holes Drilled:
No
Oiling Style:
Through pushrod
Machined for O-Ring:
No
Heat Crossover:
No
Quantity:
Sold individually.

The post AFR 195cc SBC Enforcer Cylinder Heads 1001 appeared first on ATK High Performance Engine.

Combustion Chamber Volume (cc):
64
Intake Runner Volume (cc):
185cc
Exhaust Runner Volume (cc):
64cc
Cylinder Head Style:
Assembled
Cylinder Head Material:
Aluminum
Intake Port Shape:
Rectangular
Intake Valve Diameter (in.):
2.020 in.
CNC-Machined Combustion Chamber:
No
CNC-Machined Intake Runner:
No
CNC-Machined Exhaust Runner:
No
Combustion Chamber Style:
Heart
Intake Port Location:
Standard
Exhaust Port Shape:
Square
Exhaust Port Location:
Standard
Spark Plug Style:
Angle
Intake Valves Included:
Yes
Exhaust Valves Included:
Yes
Exhaust Valve Diameter (in.):
1.600 in.
Valve Springs Included:
Yes
Maximum Valve Lift (in.):
0.600 in.
Camshaft Style:
Hydraulic roller
Outside Diameter of Outer Spring (in.):
1.290 in.
Damper Spring Included:
No
Number of Springs Per Valve:
Dual
Retainers Included:
Yes
Retainer Material:
Chromoly steel
Locks Included:
Yes
Lock Style:
7 degree
Valve Stem Seals Included:
Yes
Valve Stem Seal Style:
Positive stop
Rocker Arm Studs Included:
Yes
Rocker Arm Nut Thread Size:
3/8 in.-24
Rocker Arms Included:
No
Rocker Arm Nuts Included:
No
Guideplates Included:
Yes
Guideplate Pushrod Size:
5/16 in.
Valve Cover Mounting Style:
Perimeter bolt
Accessory Bolt Holes Drilled:
Yes
Intake Valve Angle:
20
Exhaust Valve Angle:
20
Valve Guides Included:
Yes
Valve Guide Material:
Bronze
Valve Seats Machined:
Yes
Valve Seat Machine Style:
3-angle
Valve Seat Material:
Ductile iron
Cylinder Head Color:
Natural
Steam Holes Drilled:
No
Oiling Style:
Through pushrod
Machined for O-Ring:
No
Heat Crossover:
No
Quantity:
Sold individually.
Notes:
Installed valve springs are for hydraulic roller cams.

The post AFR 185cc SBF Enforcer Cylinder Heads 1351 appeared first on ATK High Performance Engine.

Frankenstein introduced another level of horsepower when The Monster was brought to life. FED poured our arsenal of precision engineering into a common cylinder head and woke the industry. Intake and exhaust chambers are 5-Axis CNC ported with our latest high performance program, meticulously hand blended and deburred. Our strict quality control processes ensure extreme attention to detail and precise tolerances. High quality components include FED’s premier stainless steel severe duty valves, custom PAC .700” lift valve springs, titanium retainers, bronze guides and hi-temp silicone exhaust o-ring gaskets.

Monster’s crazy cousin “Boost Monster” is now available for power adders. The Boost Monster features CHE mag-bronze valve guides and Inconel exhaust valves for the increased heat. Both the Monster and Boost Monster fit all standard equipment such as valve covers, headers, LS3 Intakes, and OEM-type LS3 rocker arms. (Billet Rocker Stands Available Separately)

Configured for turbos, superchargers and boosted race applications.
Fully CNC Ported, 72cc Chamber Volume
273cc Intake Port, 112cc Exhaust Port and 11° Valve Angle
High Quality Components:
CHE Bronze Guides
Inconel Exhaust Valves
Black Nitride Stainless Steel Severe Duty Intake Valves
Custom PAC .700” Lift Valve Springs
Titanium Retainers
O-Ringed Exhaust Ports (Hi-Temp Silicone O-Rings Included)
2″ Headers Recommended

Rocker Stands Sold Separately

The post Frankenstein M311 273cc Boost Monster (LS3) 11deg. Cylinder Heads (SET) appeared first on ATK High Performance Engine.

Frankenstein introduced another level of horsepower when The Monster was brought to life. FED poured our arsenal of precision engineering into a common cylinder head and woke the industry. Intake and exhaust chambers are 5-Axis CNC ported with our latest high performance program, meticulously hand blended and deburred. Our strict quality control processes ensure extreme attention to detail and precise tolerances. High quality components include FED’s premier stainless steel severe duty valves, custom PAC .700” lift valve springs, titanium retainers, bronze guides and hi-temp silicone exhaust o-ring gaskets.

Monster’s crazy cousin “Boost Monster” is now available for power adders. The Boost Monster features CHE mag-bronze valve guides and Inconel exhaust valves for the increased heat. Both the Monster and Boost Monster fit all standard equipment such as valve covers, headers, LS3 Intakes, and OEM-type LS3 rocker arms. (Billet Rocker Stands Available Separately)

Fully CNC ported, 72cc chamber volume
273cc intake port, 112cc exhaust port and 11° valve angle
High Quality Components:
Black Nitride Stainless Steel Severe Duty Valves
Custom PAC .700” Lift Valve Springs
Titanium Retainers
O-Ringed Exhaust Ports (Hi-Temp Silicone O-rings Included)
2″ Headers Recommended

Rocker Stands Sold Separate

The post Frankenstein M311 273cc LS3 Cylinder Heads (SET) appeared first on ATK High Performance Engine.

Features & Benefits

-Bronze Valve Guides
-Dual valve springs for .650″ max lift
-CNC finished faces and bolt holes for extreme accuracy
-355-T6 high density aluminum
-Machined for screw in studs and guide plates
-All factory components will fit without modification
-Come fully assembled
-Sold individually

Cylinder Head Specifications

INTAKE:
Intake Runner Volume (cc): 252
Intake Port Location: Standard
Intake Valves Included: Yes
Intake Valve Diameter (in): 2.160 in.

EXHAUST:
Runner Volume (cc): 78.8
Exhaust Valve Diameter (in): 1.600 in.
Exhaust Valves Included: Yes
Exhaust Runner: No
Port Shape: Round
Exhaust Port Location: Standard

COMBUSTION CHAMBER:
Combustion Chamber Volume (cc): 69.4
CNC-Machined Combustion Chamber: No

VALVE SPECS:
Intake Valve Angle: 12 Degrees (3 degrees rolled)
Exhaust Valve Angle: 12 Degrees (3 degrees rolled)
Valve Guides Included: Yes
Valve Guide Material: Manganese Bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 5-Angle
Valve Seat Material: Chrome Nickle
Valve Stem Seals Included: Yes
Valve Stem Seal Style: Viton® Fluoroelastomer

SPRINGS:
Valve Springs Included: Yes
Maximum Valve Lift (in): .650 in.
Spring Pressure Open: 370 @ 1.150
Spring Pressure Closed: 142 @ 1.800
Outside Diameter of Outer Spring (in): 1.29 in.
Damper Spring Included: Yes
Number of Springs per Valve: Dual
Retainers Included: Yes
Retainer Material: Chromemoly Steel
Locks Included: Yes
Lock Style: 7 Degree

ROCKER ARMS:
Rocker Arm Studs Included: No
Rocker Arms Included: N/A
Rocker Arm Nut Thread Size (in): 8 x 1.25
Rocker Arm Nuts Included: No

MISC:
Head Style: Assembled
Cylinder Head Material: Aluminum
Cylinder Head Finish: Natural
Spark Plug Style: Standard
Cover Mounting Style: Standard
Steam Holes Drilled: No
Oiling Style: Through Pushrod
Machined for O-Ring: No
Heat Crossover: No
10mm Accessory Bolt Holes Machined On Ends of Heads

The post ATK 2CT13S1 LS3/L92 As Cast Cylinder Heads Assembled 255cc appeared first on ATK High Performance Engine.