Chevy LSx 454 700hp COMPLETE ENGINE


Base Price $17,799

The LSx 454 700hp Crate Engine 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: 725bhp @ 6700 rpm
Peak Torque: 580lb/ft @ 5200 rpm
Compression Ratio: 11.5:1
Operating Range: 2500 – 6700rpm
Required Fuel: 91+ Octane Pump Gasoline 



  • New GM LSx Cast Iron Block
  • Zero Decked
  • Bored 4.185”
  • Honed with Torque Plates and Pressure Washed
  • New Durabond Cam Bearings Installed
  • Line Honed
  • ARP Main Studs


  • Mahle Forged pistons with Anti-Friction Coating


  • Clevite H-Series Main and Rod Bearings


  • Comp Cams Hydraulic Roller


  • GM Oil Pan (Camaro, Corvette, GTO or Truck)
  • GM Timing Cover
  • GM Rear Cover
  • GM Lifter Valley Cover
  • GM Valve Covers


  • Powerbond SFI
  • ARP Damper Bolt


  • Callies Comp Star 4340 Forged Steel
  • 4.125” stroke
  • Internally Balanced Front and Rear
  • 24x or 58x Reluctor Wheel


  • Callies Comp Star Forged Steel H-Beam
  • 6.125” Length
  • ARP 2000 Rod Bolts


  • Mahle Plasma Moly


  • Comp Cams Hydraulic Roller

Timing Sets:

  • Cloyes Billet Roller Hex Adjust 4X

Oil Delivery:

  • Katech Performance Dry Sump or Melling Wet Sump
  • GM Pick Up Tube
  • GM Windage Tray


  • GM MLS Head Gaskets .050”
  • GM Cover Gaskets



  • Golen Aftermarket LS Aluminum CNC Ported
  • Three angle performance valve job

Intake Valves:

  • Stainless Steel 2.20”

Exhaust Valves:

  • Stainless Steel 1.6”

Head Bolts: 

  • ARP Performance

Intake System:

  • Fast LSXR 102mm Intake
  • 102mm Billet Throttle Body
  • Fast 50lb Uscar Fuel Injectors
  • Fast Billet Fuel Rails

Combustion Chamber:

  • 70cc


  • 380CFM @ .650” Lift


Spring Kit:

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


Rocker Arms:

  • GM Factory 1.7 Ratio



  • Smith Brothers 3/8 .083” Wall Hardened


Ignition System:

  • Autolite Racing Spark Plugs


Dyno Test Service:

  • Run Engine for Full Break In and Power Test
  • 2 Oil Changes using Joe Gibbs Break In Oil
  • Graphs Listing HP, Torque and all Engine Vitals


We are able to build your 454 LSx 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 one 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 LSx 454 crate 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 “One 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!