GM Powertrain - Performance Build Center

Northstar V-8 SC 4.4L Engine (LC3)

• Flagship "V" Series Cadillac vehicles require high performance with refinment and technical sophistication
  
  
• Northstar V-8 SC allows Cadillac to competitively market the STS-V and XLR-V against global competition
  
  
• Engine is based on Northstar architecture with significant upgrades for added thermal and mechanical loads

• VVT and GMPT patented integral supercharger/intercooler/intake manifold delivers exceptional specific output with uncommon refinement
  
  
  • Specific output:
    • 101 hp/L, 94 lb-ft/L, 90% of peak torque from 2,200-6,200 (XLR-V)
    • 107 hp/L, 100 lb-ft/L, 90% of peak torque from 2500 to 6100 (STS-V)
    
    
  • High efficiency Laminova intercoolers provide excellent heat transfer and noise reduction with reliable system life
    
    
  • Exceptional idle quality, linear part load feel, and WOT breathing enabled with 4-cam VVT
    
    
  • Low radiated noise from excellent engine structure, acoustic tuning
  
  
  

Northstar LC3 XLR-V Engine

• Structure builds on Northstar lineage, but with new upper block, heads, head gasket, pistons and rods for robust durability. Basic architecture (upper block/lower crankcase) provides for further increases in output

• Hand built at the GMPT Performance Build Center in Wixom, Michigan, to ensure quality at low volume