Chevy LS 427 LS7 HHR Pump Gas Engine
LS Series

Chevy LS 427 LS7 HHR Pump Gas Engine $17,995

Chevy LS 427 LS7 HHR Pump Gas Engine Shown With Optional Equipment
427/745HP $17,995
Less Carb & Ignition

715HP From Our 427 LS7 Doesn't Seem To Be Enough For Some Of You Power Hungry Guys. Scott Got Tired Of Hearing That And Sprayed A Little Magic "Pixie Dust" On That Popular LS7 Combo And Came Up With An HHR Version That Makes 745 HP At 6800 RPM!! Utilizing The Latest Brodix BR7 Heads And A New Design Hi Rev Hydraulic Roller Cam And Valve Train Package Make This Baby Scream!! If You Love Horsepower And RPM, This Is The Engine For You!! Ready To Ship Today!!

  • Horsepower
  • Torque
  • Bore & Stroke
  • Compression Ratio
  • Fuel Requirement
  • 745 @ 6800 RPM
  • 615 @ 5300 RPM
  • 4.125 x 4.000
  • 10.95 to 1
  • 92/93 Octane


  • GM Performance LS7 Aluminum Block w/6 Bolt Steel Billet Caps
  • Lunati 4340 "Wet Sump" Forged Steel Crank w/58T Reluctor Wheel
  • Callies/Compstar 4340 6.125" H-Beam Forged Steel Rods w/ARP 2000 Bolts
  • Clevite 77 "H" Series Main & Rod Bearings
  • Mahle 2618 Forged Aluminum Pistons w/Coated Skirts
  • 1.0/1.0/2.0 MM Ultra Lightweight Steel Ring Set
  • SSRE/Comp Cams Custom Hydraulic "Street Roller" Camshaft
  • Hi-Rev Hydraulic Roller Lifters
  • Rollmaster Billiet Timing Set w/IWIS Chain
  • Brodix BR7 LS7 Heads
  • PAC Racing Hydraulic Roller Springs w/Titanium Retainers
  • ARP High Performance Head Bolt Kit
  • GM LS7 Rocker Arms w/Bushing Trunion Kit
  • Chromemoly 3/8 .080" Wall Pushrods
  • GM MLS Head Gaskets
  • Edelbrock Super Victor 4500 Aluminum Intake
  • Melling Race Prepped Oil Pump
  • GM Performance Muscle Car Oil Pan w/Full Length Windage Tray
  • GM Calibrated "Wet Sump" Dipstick
  • GM Aluminum Front Cover
  • GM Aluminum Rear Cover w/Seal
  • ATI Super Damper SFI Harmonic Balancer
  • Holley Polished Aluminum Valve Covers w/Coil Bosses
  • Complete Assembly Internally Balanced
  • Individually Dyno Tested & Tuned
  • Actual Dyno Sheet Provided
  • 2 Year Warranty
Holley Sniper EFI Package$1995
Includes: Holley Super Sniper EFI Unit, Sniper EFI Touchscreen LCD Programmer, Bosch LSU 4.9 Wideband Oxygen Sensor, Stainless Steel Clamp-On Oxygen Sensor Installation Kit (May Also Be Welded). Base Tuneup and Parameters Set and Calibrated On Your Engine.
Igniton Components
Ignition Package Includes: (8) Coil Packs, Spark Plug Wires, Cam Sensor, Crank Sensor w/Engine Wiring Harnesses $895
MSD LS Controller (6014) Programmable Electronic Ignition Box (For 24T/58T Reluctor Wheel). Available in Black or Red. $405
Fuel System Components
Why Buy A Carburetor From Us?

Yes, you can certainly purchase a stock carb from the big mail order companies but we've seen carbs out of the box down on power as much as 40HP and between 15-20HP is common. That's why we disassemble and blueprint EVERY carburetor before we ever bolt it on your engine. We then tune, adjust and jet your carb on your engine so you get every ounce of power that you paid for.

Even if you're considering one of our Engine Kits or simply looking for a replacement carb, the same blueprint work is done and we dyno test it on a comparable engine to yours before it ships!
 $Priceless
APD 1050 CFM 4500 Series Carb Package includes: 2 Circuit Billet Carb, Phenolic Spacer, Aluminum AN Fuel Fittings, Studs & Gaskets. Dyno Tuned, Jetted and Calibrated on your engine.Image Close$1395
Igniton Components
Ignition Package Includes: (8) Coil Packs, Spark Plug Wires, Cam Sensor, Crank Sensor w/Engine Wiring Harnesses $895
MSD LS Controller (6014) Programmable Electronic Ignition Box (For 24T/58T Reluctor Wheel). Available in Black or Red. $405
Blocks
ARP Main Stud Kit (Installed Before Block Machine Work) $295
Drill Block For "Wet Sump" Dipstick $N/C
Oil Pumps - Oil Pans - Vacuum Pump
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
Additional Parts - Labor - Accessories
Master Power Silent Drive Vacuum Pump Kit For Power BrakesImage Close$589
Billet Specialties Tru Trac Serpentine SystemImage Close$Call
Billet Specialties V-Track Pulley SystemImage Close$Call
Holley (2) Piece "Chevrolet" Valve Covers.Image Close$Call
C.F.M Breather w/One Way Check Valve For Holley "Exposed Coil" Valve Covers. Available In Chrome Or Flat Black.Image Close$79
Custom Powder Coating Packages Available $Call