Our LS 441CI 700HP crate engine package comes fully dyno-tested and ready for installation. This performance build is crafted with premium components throughout, offering exceptional quality at an affordable price. Key highlights include a Dart SHP iron block with four-bolt mains, a fully forged rotating assembly, a custom hydraulic roller camshaft, high-flow LS3/L92-style performance cylinder heads, full roller rocker arms, and a versatile muscle car oil pan compatible with most setups. We can also help you select the right motor mounts, headers, serpentine pulley system, and transmission to perfectly match your hot rod application.
- LS 441CI 700HP Crate Engine Build Spec’s:
- Fully Machined Dart SHP LS Next Iron Block
- 4340 Forged Steel 4.125” Stroke Crankshaft (Eagle, Scat, or LPC)
- H-Beam Rods 6.125” (Eagle, Scat, or LPC)
- Performance Forged Pistons (Mahle, Icon, DSS, or JE)
- Complete Assembly Balanced (Internal)
- Performance Rings Hand Filed To Match Application
- Custom Ground Hydraulic Roller Camshaft
- Hydraulic Roller Lifters
- Performance Timing chain set
- Melling Oil pump
- LS3/L92 Rectangle Port Aluminum Performance Cylinder Heads
- 2.165 Pro Series Intake Valves
- 1.590 Pro Series Exhaust Valves
- 1.295” Dual Performance Valve Springs
- 7 Degree Valve Retainers And Locks
- Roller Rocker Arms
- Chrome Moly Pushrods
- Main bolts (Dart/ARP)
- Head studs (ARP/Dart)
- Aluminum Timing And Rear Cover
- Aluminum Valley Tray
- Muscle Car Stroker Oil Pan
- Harmonic Balancer
- Aluminum Valve Covers (Black, or Polished)
- LS3 Style Coils
- Fabricated Aluminum Intake Manifold (Black, or Shinny)
- Cable Driven Throttle Body (Black, or Shinny)
- Fuel Injectors
- Fuel Rails
- Coil Harness
- Spark Plugs
- 8.5mm Ignition Wires
- Holley Terminator X ECU
- Engine Wiring Harness
- Fuel Injector Harness
- Wide Ban O2 Sensor
- Intake Air Temperature Sensor
- Crankshaft Position Sensor
- Camshaft Position Sensor
- Engine Coolant Temperature Sensor
- Manifold Air Pressure Sensor
- Oil And Filter
- Spark Plugs
- Build will be photo documented during the assembly process
- Engine will be hot run tested with base tune
- 2 Year Unlimited Miles Warranty
Every Proformance Unlimited turn-key LS engine package includes a complete engine harness and ECM, providing full engine management and optimized driving performance. Unlike many competitors who rely on outdated MEFI ECM systems and harnesses—limiting real-time adjustments to fueling, timing, and altitude compensation—our systems ensure your engine operates with the same precision and adaptability as a brand-new production vehicle. This modern control setup not only enhances power output but also improves overall fuel efficiency.
For those selecting the Fitech Ultimate EFI with transmission control, you’ll benefit from complete compatibility with GM’s electronically controlled four-speed overdrive transmissions, including the 4L60E, 4L65E, 4L70E, and 4L80E models—something MEFI-based systems cannot offer.
All of our turn-key packages come equipped with GM Performance aluminum valve covers, a coil pack relocation kit, and a GM Hot Rod Oil Pan Kit. Upgrade options for these components are available in the drop-down menus above. If you’re interested in an item not listed, simply contact us for a quote. The aluminum coil relocation kit lets you discreetly mount ignition coils anywhere under the hood, giving your engine bay a clean, professional look.
Each Proformance Unlimited turn-key engine package also includes a one-year, unlimited-mile warranty, provided all tuning is performed by our team. When you invest in a Proformance Unlimited engine, you’re not just buying high-quality components—you’re gaining our extensive knowledge, experience, and expertise. We know exactly what works and what’s needed to ensure a smooth, successful installation.
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