Chevy LS 427 LS7 Aluminum Short Block
LS Series

Chevy LS 427 LS7 Aluminum Short Block $7,895

Chevy LS 427 LS7 Aluminum Short Block Short Deluxe Shown
427 LS7
Short Block $7,895

Legendary 427 Numbers! An Affordable, High Quality Precision Short Block For The LS Enthusiast. Brand New GM LS7 Aluminum Blocks Combined With Lunati 4340 Forged Steel Crank And Callies/Compstar 4340 Forged Steel H-Beam Rods. Custom Wiseco 2618 Forged Aluminum Pistons Complete This High Quality Build. Every Short Block Is Balanced, Clearanced And Hand Fitted By Our Experienced Team Of Race Engine Builders.

  • Bore & Stroke
  • Compression Ratio
  • 4.125 x 4.000
  • 11.0 to 1


Hand Built & Individually Assembled!

  • GM Performance LS7 Aluminum Block w/6 Bolt Billet Caps
  • Lunati 4340 "Wet Sump" Forged Steel Crank w/58T Reluctor Wheel (1,2)
  • Callies/Compstar 4340 6.125" H-Beam Forged Steel Rods w/ARP 2000 Bolts
  • Custom Wiseco 2618 Forged Aluminum Pistons w/Coated Skirts
  • 1.2/1.2/3.0MM GFX Steel Ring Set
  • Clevite 77 H-Series Main & Rod Bearings
  • Internally Balanced w/Mallory Heavy Metal
  • Professionally Blueprinted and Assembled
  • Footnotes:
  • (1) 58T Reluctor Wheel Standard. 24T Reluctor Wheel Available At No Extra Charge
  • (2) Available With LS7 Dry Sump Style Longer Crank Snout For An Additional $250
Camshaft Installation Package$850
Includes: Custom SSRE/Comp Cam Steel Billet Hydraulic Roller Cam, Cam Thrust Plate & Rollmaster Single Roller Timing Set w/IWIS Chain. Camshaft Installed and Degreed.

Custom Designed Camshaft Profile Based On Your Individual Application.
Deluxe Short Block Version
Includes Camshaft Package
$1995
Includes: UltraStreet Hydraulic Roller Cam, Cam Thrust Plate, Rollmaster Single Roller Timing Set w/IWIS Chain, GM Front Cover w/Seal, ATI Harmonic Balancer, Melling Hi-Performance Oil Pump, Rear Cover w/Seal and GM Performance Muscle Car Oil Pan w/Full Length Windage Tray & Pickup. Assembled With Camshaft Installed and Degreed.
Package Options
Hi-Rev Performance Hydraulic Roller Lifters (16), Lifter Buckets (4) and Bolts (4) $395
GM Vehicle Specific Oil Pan $Call
Holley Muscle Car Retrofit 6 Quart Oil Pan Includes Custom GM Full Length Windage Tray and Holley "Road Race" Baffle Kit $465
Moroso Street/Strip 7 Quart Welded Steel Oil Pan Includes Custom GM Full Length Windage Tray and Baffle KitImage Close$395
Boost Package$895
Designed For Blower, Turbo Or Nitrous Applications.

Includes: Diamond L2K 2618 (9.5 or 11.0 CR) Pistons with H13 Tool Steel Pins and Total Seal 1.5/1.5/3.0mm AP Steel Ringset. Clearances and Ring End Gaps Set For Boost.
Blocks
ARP Main Stud Kit (Installed Before Block Machine Work) $295
Drill Block For "Wet Sump" Dipstick $N/C
Crankshafts
Callies CompStar 4340 Fully Counterweighted Crankshaft w/8 Counterweights $495
Blocks
ARP Main Stud Kit (Installed Before Block Machine Work) $295
Drill Block For "Wet Sump" Dipstick $N/C
Additional Parts - Labor - Accessories
ARP Metric Head Stud Kit (15 Bolt Heads) $295
Cometic MLS (Multi Layered Steel) Head Gaskets (.040/.045/.051 Thickness) Each$125
Cometic MLS (Multi Layered Steel) Head Gaskets (.060/.066 Thickness) Each$145