CHEVY LSx 427ci BOOSTED LONG BLOCK

CHEVY LS7 427ci 650hp LONG BLOCK

Base Price $14,599

The LSx 427ci makes max power and torque with a hydraulic cam which is very street able but also gives you the sound you are looking for!!

Peak Horsepower: 700bhp @ 6700 rpm
Peak Torque: 600lb/ft @ 5200 rpm
Compression Ratio: 11.5:1
Operating Range: 3000 – 7000rpm
Required Fuel: 91+ Octane Pump Gasoline 

BLOCK SPECIFICATIONS

Block:

  • New GM LSx Cast Iron Block
  • Bore Size 4.125"
  • Zero Decked
  • Honed with Torque Plates and Pressure Washed
  • New Durabond Cam Bearings Installed
  • Line Honed
  • ARP Main Studs


Pistons:

  • Wiseco Forged Boost Ready


Bearings:

  • Clevite H-Series Main and Rod Bearings


Lifters:

  • Comp Cams Hydraulic Roller


Gaskets:

  • Cometic MLS Head Gaskets

Crank:

  • Dragon Slayer 4340 Forged Steel
  • Stroke 4.125”
  • Internally Balanced Front and Rear


Rods:

  • Callies Ultra H-Beam Forged Steel
  • 6.125” Length


Rings:

  • Wiseco Stainless Steel


Camshaft:

  • Comp Cams Hydraulic Roller Boost Grind


Timing Sets:

  • Cloyes Billet Hex Adjust Roller


Oil Delivery:

  • Melling Select Performance



CYLINDER HEAD SPECIFICATIONS

Type:

  • Trick Flow LS7 Aluminum CNC Ported, 6-Bolt


Intake Valves:

  • Stainless Steel 2.16”


Exhaust Valves:

  • Stainless Steel 1.6”


Head Bolts: 

  • ARP Performance, 6-Bolt

Combustion Chamber: 

  • 70cc


Flow:

  • 360CFM @ .600” Lift


Spring Kit:

  • PAC Racing Polished Double Valve Spring
  • Light Weight Tool Steel Retainers and Hardened Locks


Rocker Arms:

  • GM Factory 1.7 Ratio


Pushrods:

  • Smith Brothers 3/8 .083” Wall Hardened



We are able to build your engine to match just about any specs you desire, so if you do not see it just ask us! Each Golen Engine comes standard with a three year no mileage limit warranty to keep you confident and covered. When you purchase one of our LS HP or Hot Rod Series Street Engines you will receive a full spec sheet listing the exact components your engine was built with. We will also provide you with a complete Set Up Guide as well as full phone tech support to aid you with the installation process. It is mandatory for you to contact Golen Engine Tech Support before starting your engine for the first time and you can reach our Tech Support Line at 1-800-591-9171 ext 2. Each Golen Engine Performance Street Engine comes standard with a “Three Year no Mileage Limit Warranty” to keep you confident and covered! Feel free to contact us anytime for help choosing the perfect performance engine combination!!