The first step into the bedlam of Frankenstein power.
- 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
- Sold Per Set
Description
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)
Specifications
Description |
Specification |
Part Number |
Min. Bore Dia. |
4.000” |
|
Intake Port Volume |
273cc |
|
Exhaust Port Volume |
112cc |
|
Combustion Chamber Volume |
72cc |
|
Intake Valves |
2.165” x 5.405” x 45° |
913005 |
Exhaust Valves |
1.600” x 5.420” x 50° |
SS 913007/INC 913008 |
Valve Springs |
.700? Lift FED exclusive by PAC |
914005 |
Retainers |
FED Titanium-64 – LS Dual Spring |
914040 |
Valve Locks |
GM Valve Lock |
916051 |
Valve Seals |
U.S. Seal – Viton High Heat Seal |
U.S. Seal 805 |
Billet Rocker Stands |
913001 |
|
Exhaust Gaskets |
914032 |
|
Rocker Studs: |
ARP-234-7207 |
|
Head Bolts: |
ARP-134-3610 (Gen IV) |
|
ARP-134-3609 (Gen III) |
||
Head Studs: |
ARP-234-4110 (Gen IV) |
|
ARP-234-4316 (Gen III) |
||
Head Gaskets: |
4.125” Bore |
|
Spark Plug |
||
Spark Plug: |
||
Gasket Seat – .708” Reach PLEASE VERIFY |
||
Tapered Seat – .708” Reach PLEASE VERIFY |
||
Pushrods: |
8.100 – 8.250” Length x 3/8” Diam. |
|
Lifters: |
Standard |
|
Rockers: |
Standard LS3 w/Billet Rocker Stand |
|
w/Billet Rocker Stand – Standard |
Shaft Rockers |
JESEL – KPS462173 |