Welcome to Felber Horsepower Solutions!
Our High Velocity Engines are very similar to our Severe Duty’s. The main difference is that they’re more aimed at a performance/speed application. Mainly in the fact that they use higher compression and more aggressive camshafts to achieve higher RPM power. These engines are great for somewhat lighter/hobbyist boats, using higher RPM/less aggressive thrust-curve props. Meaning, acceleration and speed, rather than running over tree stumps with 6 people in the boat. This is basically the “Hot Rod” engine for a big boat. But be careful, they are higher maintenance, require higher-octane fuel, and don’t have as good of “manners”/drivability.
Fuel Requirement; 93 (R+M/2) Octane Compatible 100 No-Lead Recommended
Recommended RPM at WOT; 5600+
Warranty; No warranty given or implied due to extreme application
Components
* All Aftermarket Components
* Shortblock;
o Dart Big M Block
o ARP Main Studs
o All Internally Balanced Reciprocating Assembly
o 4340 Forged Nitrided Lightweight Crankshaft
o 4340 H Beam Forged Full-Floating Connecting Rods w/L19 or ARP2000 Bolts
o Forged Lightweight Pistons
o Tool Steel Wrist Pins
o Plasma-Moly or Hellfire Rings
o Michigan “H” Series Race Bearings
o Brass Freeze Plugs
* Lightweight Billet Harmonic Balancer w/Indexed Timing pointer and ARP Bolt
* JW “Wheel” HD Flexplate for use w/Softdrives
* FHS Custom Solid Roller Cam w/Hardened Distributor Gear for Endurance
* COMP/Crane High Endurance/Severe Duty Roller Lifters
* True Double Roller Timing Set Cloyes or Crane Billet
* COMP Pushrod Guideplates
* ARP Large Radius Rocker Studs
* System 1/Melling High Volume Oil Pump w/Billet Drive and ARP Stud
* 10 Qt High Capacity Oilpan and P/U with Windage Tray and external sight glass
o Designed to reduce Heat, foaming and power robbing windage losses
* COMP .083 Wall Pushrods
* Scorpion Billet Roller Rockers
* Fel-Pro Race Gaskets Throughout
* Heads;
o DART/FHS Ported Cylinder Heads
o Ferrea Super Alloy/Manley Inconel Valves
o PSI Valvesprings designed for NASCAR use
o DelWest Titanium Retainers
o Billet/Hardened Valve Locks
o Premium Valve Seals
* DART Ported Intake Manifold
* Sheetmetal Valve Covers
* Dual Valvecover Breathers for Airboat Use
o Dual Pipe Nipples Installed for Evac per Customer Request
* Stainless Steel Hardware on all external fasteners and accessories
Labor Included
* Full “Race” Prep and Assembly;
o Block Bored and Honed w/Torque Plates
o Block Squared and Decked to set optimum Quench
o Block Clearanced for Stroker Crank
o Pistons Tops Radiused and Surface-Prepped for Heat Resistance
o Reciprocating Assembly balanced within 1g
o Rotating/Crankshaft Balanced w/50% rec factor
o Stage II Head Porting for Maximized Volumetric Efficiency
o Competition Valve job developed explicitly for Airboat Use
o Oil System “Ported” for increased flow and oil quality
o All clearances CHECKED and set for endurance application
+ Piston to Bore
+ Piston Rock
+ Piston to Head
+ All Bearing Clearances
+ Crankshaft Endplay and Runout
+ Camshaft Endplay
+ Valve to Piston
+ Valve stem to Valve guide
+ Retainer to Valve guide
+ Coil Bind
+ Rocker to Pushrod and Spring Retainers
+ Rocker to Valvecover
+ Distributor Gear to Camshaft
o Camshaft Degreed/Phased for maximum performance
o Harmonic Balancer Degreed/Phased for accurate Timing
o Valve train Geometry Checked and Pushrod Length optimized
o Build/Spec Sheet Provided w/Final Assembly Weight
