615 Big Block Chevy DR20 Pro Series Drag Race Engine
Pro Series Drag Race

615 Big Block Chevy DR20 Pro Series Drag Race Engine $29,950

615 Big Block Chevy DR20 Pro Series Drag Race Engine Shown With Optional Equipment

New DR20 20° Head Design!

9.8" Low Deck Block

615/1215HP $29,950
Includes Carb & Ignition

Not Just New ... Revolutionary!! After A Year Of Testing We're Ready To Introduce To The World Our New And Exclusive "DR20" Design Cylinder Head And Custom Engine Package. Unparalled High RPM Stability With Its' Exclusive (1) Piece Stand Shaft Rocker System And "Clean Sheet Of Paper" Redesign Over The Currently Popular 20° BBC Cylinder Heads Out There.

A Completely New Valve Arrangement In The Combustion Chamber Not Only Allows For Bigger Intake And Exhaust Valves But Also Reducing Any Cylinder Wall Or Exhaust Valve Interferance that Normally Results In An Airflow Restriction. The End Result Is An Extremely Stable Cylinder Head That Accelerates Off The Line And Off Gear Changes To Produce Quicker ET's Over Engines With Similar Peak HP Numbers.

More Power, Better Valve Train Reliability And Increased Torque Where It Counts. The Best Part Of This "Trifecta" Is That It Comes To You At Virtually No Increase In Cost!!

  • Horsepower
  • Torque
  • Bore & Stroke
  • Compression Ratio
  • 1215 @ 7600 RPM
  • 920 @ 6200 RPM
  • 4.600 x 4.625
  • 15.5 to 1

Shafiroff Summer Sale
  • Dart Big "M" 9.8" Low Deck Block w/4 Bolt Splayed Caps
  • Manley 4340 Fully Center Counterweighted Forged Steel Crank
  • Callies Ultra H-Beam 4330M Timkin Steel Rods w/ARP H-11 Bolts
  • Clevite 77 "H" Series Main & Rod Bearings
  • SSRE/Diamond 15.5-1 Custom Gas Ported Pistons
  • .9/.9/3.0mm AP Steel Ring Set
  • SSRE 55mm Large Core 7/4 Swap Billet Roller Cam
  • Isky Red Zone .904" Solid Roller Lifters w/Hi-Pressure Pin Oiling
  • Jesel "Original Style" Belt Drive
  • New Design SSRE DR20 Fully CNC Ported 20° Heads
  • Titanium 2.400" Intake & 1.850" Exhaust Valves
  • PAC Racing 1.670" Triple Springs
  • Titanium Retainers & 10° Bead Locs
  • ARP Head Stud Kit w/Parallel Ground Washers
  • Exclusive Jesel "1 Piece Stand" Shaft Rockers
  • Super Duty Pushrods
  • Cometic MLS Head Gaskets
  • Dart Inner Valley Stud Kit
  • SSRE DR20 Big Plenum Fully Ported Single Dominator Intake
  • SSRE/Moroso Pro Eliminator Oil Pan w/Windage Tray
  • Moroso Winged Design Race Prepped Oil Pump
  • ATI Super Damper
  • APD 1250 Billet Enforcer 4500 Carb & Black Widow Spacer
  • Crank Trigger Ignition w/Moroso Shielded Wires
  • SR20 Spec SSRE Sheet Metal Valve Covers
  • Complete Assembly Internally Balanced
  • Individually Dyno Tested & Tuned
  • Actual Dyno Sheet Provided
Shafiroff Racing Engine Options
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!
APD 1250 CFM 4500 Series Carb Package includes: 3 Circuit Billet Carb, APD Black Widow Spacer, Aluminum AN Fuel Fittings, Studs & Gaskets. Dyno Tuned, Jetted and Calibrated on your engine.ImageShafiroff Racing Available Options Close$Included
MagnaFuel ProStar 500 Billet Gerotor Electric Fuel PumpImageShafiroff Racing Available Options Close$430
Igniton Components
MSD Electronic Ignition Package includes MSD Pro Billet Locked Distributor w/Ford HEI-Style Cap, Bronze Gear, Custom MSD 8.5mm Wire Set. Dyno Tested and Calibrated on your engine. $Included
MSD 7AL-2 Electronic Ignition Box (Direct Plug-in For Our MSD Distributors) $759
MSD 82613 HVC-2 Coil $265
Dart Steel Billet Main Cap Upgrade $450
Brodix Aluminum Block w/Steel Billet Caps, Special Head Stud Kit & Additional Machining (Slightly Less Peak HP) $4500
HIP® Process (Hot Isostatic Pressing) For Increased Durability With Aluminum Blocks $675
Pistons - Pins - Rings - Bearings
Tool Steel "Heavy Wall" Wrist Pins $250
Calico Coated Bearing Package $175
Isky Red Zone .904 Solid Roller Lifters w/EZX "Needle Free" Bearing Option $295
Morel "Black Mamba" Needleless Roller Lifters $595
Needle Bearing Tip Option for T&D Shaft Rockers $295
Oil Pumps - Oil Pans - Vacuum Pump
Moroso HD Billet Aluminum Oil PumpImageShafiroff Racing Available Options Close$345
Vacuum Pump Kit Includes: Moroso 3 Vane Vacuum Pump & Adjustable Relief Valve, Breather Tank, AN Fittings, Jones Mandrel & Bracket Kit w/Radius Tooth HTD Belt. ImageShafiroff Racing Available Options Close$1395
Additional Parts - Labor - Accessories
SFI Heavy Duty Flexplate & ARP Bolt Package $150
Boninfante Severe Duty SFI Flexplate & ARP Bolt PackageImageShafiroff Racing Available Options Close$229
Boninfante SFI Billet Flexplate & ARP Bolt PackageImageShafiroff Racing Available Options Close$395
PowerMaster Hi-Torque Mini StarterImageShafiroff Racing Available Options Close$229
Meziere 55GPH Electric Water PumpImageShafiroff Racing Available Options Close$575