427 LS Power Adder Short Blocks

427 LS Power Adder Short Blocks

427 LS Power Adder Short Blocks Basic Short w/Cam Package Shown

Supercharged/Turbo/Nitrous

New! 427 LS Next Short Blocks

Looking To Run An LS Platform Engine With A Turbo, Supercharger Or Nitrous? You're Going To Need One Of These!!

Order One Of Our 427 Short Blocks For A Strong And Reliable Foundation. Just Pick Your Level Of Strength And We Supply Those High Quality Parts Along With Our World Famous Precision CNC Machine Work And Balancing. The Finishing Touch Is One Of Our Ultra Experienced Race Engine Assemblers Puts Your Short Together With Exact Blueprint Tolerances And The Extra Care Only A True Professional Can Deliver.

  • 427 Bore & Stroke
  • Compression Ratio
  • 4.125 x 4.000
  • See Chart
LS3 15°Chamber Vol.69cc71cc
-3cc11.3811.14
-15cc10.099.90
-21cc9.569.39
LS7 12°Chamber Vol.69cc71cc
-4.8cc11.1610.93
-20cc9.649.47
Ratio Computed With .002 Deck & .051 Gasket

Stage I

Rated For Up To 1200 HP

  • Dart SHP LS Next Block
  • ARP 7/16" Main Cap Bolts
  • Manley 4340 Forged Steel Crank (1)
  • Molnar 4340 Turbo Forged Steel Rods
  • ARP 2000 Asymmetrical Rod Bolts
  • Diamond LSX 2K 2618 Forged Pistons
  • H13 Steel Wrist Pins
  • AP Steel Ring Set
  • Clevite 77 "H" Series Main & Rod Bearings
  • Complete Assembly Internally Balanced
  • Mallory Heavy Metal Included
$ 6,995

Stage II

Rated For Up To 1500 HP

  • New! Dart SHP "Pro" LS Next Block
  • ARP 7/16" Main Cap Studs
  • Dragonslayer 4340 Forged Steel Crank (1)
  • Callies Ultra-H 4340 H-Beam Forged Rods
  • ARP 2000 Rod Bolts
  • Diamond LSX 2K 2618 Forged Pistons
  • H13 Steel Wrist Pins
  • AP Steel Ring Set
  • Clevite 77 "H" Series Main & Rod Bearings
  • Complete Assembly Internally Balanced
  • Mallory Heavy Metal Included
$ 8,595

Stage III

Rated For Up To 2000 HP

  • New! Dart SHP "Pro" LS Next Block
  • ARP 7/16" Main Cap Studs
  • Callies Magnum Fully CCW 4340 Steel Crank (1)
  • Callies Ultra-I 4340 I-Beam Forged Rods
  • Callies/ARP Ultra Bolts
  • Diamond LSX 2K 2618 Forged Pistons
  • H-13 Steel Wrist Pins
  • AP Steel Ring Set
  • Clevite 77 "H" Series Main & Rod Bearings
  • Complete Assembly Internally Balanced
  • Mallory Heavy Metal Included
$ 9,595
Camshaft Installation Package$750
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.
Package Options
Hi-Rev Performance Hydraulic Roller Lifters (16), Lifter Buckets (4) and Bolts (4) $395
Deluxe Short Block Version
Includes Camshaft Package
$2195
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 Holley Retrofit Hot Rod Pan & Pickup. Assembled With Camshaft Degreed And TDC Verified And Set
Package Options
Hi-Rev Performance Hydraulic Roller Lifters (16), Lifter Buckets (4) and Bolts (4) $395
Holley Retrofit Muscle Car Oil Pan "Road Race" Baffle $225
Blocks
1/2" Head Bolt Holes. Stage II or III Only $250
Dart LSNext Aluminum Block $3500
Crankshafts
3.622" (388 Cu.In.) Stage I, Stage II or Stage III $Call
3.750" (401 Cu.In.) Stage III Only $Call
Pistons - Pins - Rings - Bearings
Custom Compression Ratios Available $Call
Coated Bearing Package $150
Additional Parts - Labor - Accessories
Cometic MLS (Multi Layered Steel) Head Gaskets (.040/.045/.051 Thickness) Each$95
Cometic MLS (Multi Layered Steel) Head Gaskets (.060/.066 Thickness) Each$115