Frankenstein Engine Dynamics M311 Ls3 Cylinder Head Rect-Port Assembled 113002
Cylinder Head - M311 - Assembled - 2.165 / 1.600 in Valve - 273 cc Intake - 71 cc Chamber - Aluminum - LS3 - GM LS-Series - Each
The Monster Series is the first threshold into HP creation far beyond any OEM head.
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)
| Attributes | |
|
Product Line
|
M311
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|
Assembled/Bare
|
Bare
|
|
Chamber Volume
|
71 cc
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|
Intake Runner Volume
|
273 cc
|
|
Exhaust Runner Volume
|
93 cc
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|
Intake Port Shape
|
Square
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|
Intake Port Location
|
Stock
|
|
Intake Port Height
|
2.670 in
|
|
Intake Port Width
|
1.400 in
|
|
Exhaust Port Shape
|
Round
|
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Spread Exhaust Port
|
Yes
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|
Exhaust Port Location
|
Stock
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|
Exhaust Port Height
|
1.700 in
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|
Exhaust Port Width
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1.860 in
|
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Exhaust Port Bolt Pattern
|
Stock
|
|
Intake Valve Size
|
2.165 in
|
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Intake Valve Included
|
No
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Exhaust Valve Size
|
1.600 in
|
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Exhaust Valve Included
|
No
|
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Valve Spring Included
|
No
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Valve Spring Retainers Included
|
No
|
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Valve Locks Included
|
No
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Valve Seal Included
|
No
|
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Rocker Stud Size
|
8 mm x 1.25
|
|
Pushrod Guide Plate Included
|
No
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Valve Guide Included
|
Yes
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|
Valve Guide Material
|
Bronze
|
|
Center Mount Valve Cover
|
Yes
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Valve Seat Included
|
Yes
|
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Intake Valve Seat Material
|
Ductile Iron
|
|
Exhaust Valve Seat Material
|
Ductile Iron
|
|
Valve Seat Finish
|
Machined
|
|
Combustion Chamber Finish
|
CNC Machined
|
|
Intake Runner Finish
|
CNC Machined
|
|
Exhaust Runner Finish
|
CNC Machined
|
|
Intake Valve Angle
|
11 Degree
|
|
Exhaust Valve Angle
|
11 Degree
|
|
Accessory Bolt Holes
|
Drilled and Tapped
|
|
Material
|
Aluminum
|
|
Color
|
Natural
|
|
Finish
|
Natural
|
|
Quantity
|
Each
|
