Shafiroff Racing Drag Race Engines
Shafiroff Racing Pump Gas Crate Engines
632/945HP $17,250
Less Carb & Ignition

Designed And Built For The Street Enthusiast That Believes "Some Is Good, More Is Better, And Too Much Is Just Enough!" This 632 UltraStreet Big Dawg Has Been Engineered To Deliver Incredible Race Engine Performance In A Reliable Pump Gas Friendly Package.

  • Horsepower
  • Torque
  • Bore & Stroke
  • Compression Ratio
  • Fuel Requirement
  • 945 @ 6300 RPM
  • 845 @ 5500 RPM
  • 4.600 x 4.750
  • 10.75 to 1
  • 92/93 Octane

  • Dart Big "M" Tall Deck Block w/Splayed 4 Bolt Main Caps
  • Manley 4340 4.750" Stroke Steel Crank
  • Manley 4340 6.700" H-Beam Steel Rods w/ARP 2000 Bolts
  • Clevite 77 "H" Series Main & Rod Bearings
  • JE/SSRE Custom 10.75-1 Forged Aluminum Pistons
  • Total Seal Plasma Moly Ring Set
  • SSRE/Comp Cams Custom "Street Roller" Camshaft (1)
  • Comp Cams Solid Roller Lifters
  • Cloyes Billet True Roller Timing Set w/Torrington Bearing
  • Brodix BB3X 380 Fully CNC Ported Rectangle Port Alum. Heads
  • 1.640" Manley Nextek Roller Springs
  • 10° Titanium Retainers
  • ARP Head Studs w/Parallel Ground Washers
  • SSRE/Harland Sharp 1.7 Diamond Aluminum Roller Rockers
  • Chromemoly (1) Piece .080" Wall Pushrods
  • FelPro HP Head Gaskets w/Pre-Flattened Steel Wire
  • Edelbrock Super Victor 632 Dominator Aluminum Intake
  • SSRE/Moroso Pro Windage Series Oil Pan
  • Moroso Race Prepped Oil Pump w/Tig Welded HD Pickup
  • GM Performance Chrome Cover w/Billet Timing Pointer
  • Hi-Performance Harmonic Balancer
  • Complete Assembly Internally Balanced
  • Individually Dyno Tested & Tuned
  • Actual Dyno Sheet Provided
E85 Version $295

If This Fuel Is Readily Available In Your Area, Our E85 Version Offers Much Greater HP And Torque Numbers Over Its' Gasoline Equivalent. E85 Fuel's Ability To Operate Without Detonation Under Much Higher Cylinder Pressure Allows Us To Significantly Raise The Compression Ratio And Slightly Alter Cam Timing To Produce These Dramatic Improvements. You Must Run An E85 Specific Carb Or Program Your Aftermarket Fuel Injection To Work With This Engine.

"HHR" Hot Hydraulic Roller $595

For Those That Want Virually All The Power Of "The Big Dawg Classic" Without The Hassle Of Ever Having To Adjust Valves, The HHR Is For You! We Use Special "Proprietary Grinds" On Our Custom Hot Hydraulic Roller Cam Along With "Ultra Hi-Rev" Hydraulic Roller Lifters And Premium Alloy Valve Springs To Maintain Race Engine Performance With Hydraulic Roller Convenience.

  • Comp Cams Custom "Proprietary Grind" Hydraulic Roller Cam
  • High Rev Hydraulic Roller Lifters
  • Isky "Enduro Design" Premium Valve Spring Package
  • Horsepower
  • Torque
  • Compression Ratio
  • Fuel Requirement
  • 895 @ 5700 RPM
  • 845 @ 4200 RPM
  • 10.75 to 1
  • 91 Octane
Nitrous Package$465

Planning On Adding Nitrous? We've Put Together A Preferred Option Package Of Our Most Popular And Highly Recommended Heavy Duty Components ... With The Added Bonus Of Savings!!

●  Calico Coated Bearing Package$150
●  Hellfire® Rings$175
●  Cometic MLS (Multi Layered Steel) Head Gaskets$95
●  Dart Inner Valley Stud Kit (Improved Head Gasket Sealing)$95

Total Package Value = $515 - Save $50!

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!
QuickFuel 1050 CFM FX-4710 Carb Package includes: Carb w/Billet Metering Blocks & Throttle Body, Phenolic Spacer, Aluminum AN Fuel Fittings, Studs & Gaskets. Dyno Tuned, Jetted and Calibrated on your engine.$1095
QuickFuel 1150 CFM FX-4711 Carb Package includes: Carb w/Billet Metering Blocks & Throttle Body, Phenolic Spacer, Aluminum AN Fuel Fittings, Studs & Gaskets. Dyno Tuned, Jetted and Calibrated on your engine.$1195
Mechanical Fuel Pump Package Includes: High Volume Race Design 6 Valve Pump, Composite Fuel Pump Rod (Required For Our Custom Cams), XRP -8 Braided Fuel Line Inlet Kit w/8AN Lines, Fittings and Fuel Filter. Plumbed, Installed & Dyno Tested On Your Engine.$475
Aeromotive Phantom In-Tank Electric Fuel Pump Includes: In-Tank Fuel Pump, Black Anodized Hanger Assembly, Internal Baffling System. (Uses -6AN Fittings and Requires Return Style Fuel System). Rated for up to 750HP.$439
Aeromotive Phantom In-Tank Electric Fuel Pump Includes: In-Tank Fuel Pump, Black Anodized Hanger Assembly, Internal Baffling System. (Uses -6AN Fittings and Requires Return Style Fuel System). Rated for up to 1000HP.$549
Aeromotive A1000 Electric Fuel Pump. Rated for up to 1200HP$375
Aeromotive A1000 Regulator for A1000 Fuel Pump$175
Race Gas Fuel Additave - "Pump Gas Without The Detonation". Available by the quart or the case. Mixing 1 oz. per gallon will yield 2 full octane points.$Call
Igniton Components
MSD Electronic Ignition Package Includes: MSD Pro Billet Distributor, Hi Perf Gear, Custom Moroso 8mm Wire Set. Custom Curved and Calibrated To Your Engine.$395
MSD 6AL Digital Electronic Ignition Box w/Hi-Speed Rev Limiter$245
MSD 6AL-2 Digital Electronic Ignition Box w/Launch Control & Hi-Speed Rev Limiter$282
MSD Blaster 3 Hi Performance Ignition Coil w/HEI Style Post$49
Composite Distributor Gear (if required)$125
Machine Block and Install Lifter Valley Screen Kit$75
Dart Inner Valley Stud Kit (Improved Head Gasket Sealing)$95
Brodix/Dart Aluminum Block w/Special Head Stud Kit & Additional Machining
(Slightly Less Peak HP)
Callies USA Made 4340 Dragonslayer Crank w/Dura-tough Heat Treating$645
Callies USA Made 4340 Magnum Plus Pro Series Crank$1145
Connecting Rods
Callies Ultra H-Beam 4330M Timken Steel Rods$395
Callies Ultra I-Beam 4330M Timken Steel Rods$795
Oliver Steel Billet Rods$795
Pistons - Pins - Rings - Bearings
Hellfire® Rings$175
Tool Steel "Heavy Wall" Wrist Pins$225
Calico Coated Bearing Package$150
HIPPO Severe Duty Roller Lifters w/Hi-Pressure Pin Oiling (Extended Lifter Life)$295
HIPPO Severe Duty Pressure Fed Roller Lifters w/Solid Bushed Rollers (No Needle Bearings)$595
Isky Red Zone Solid Roller Lifters w/EZX "Needle Free" Bearing Option$795
SSRE Stud Girdle w/CNC Machined 2-Piece Valvetrain Stabilizer & Locking Hex Head Adjusting Nuts$295
T&D Shaft Rocker System Available In 1.70, 1.75 or 1.80 Ratio (Split Ratio Sets No Extra Charge)$1395
Crower Stainless Steel Shaft Rocker Arm System. Designed For Severe Duty Street Use.$1595
Jesel "Solid One Piece" Belt Drive$895
Oil Pumps - Oil Pans
Custom Locking & Calibrated Dipstick$95
Additional Parts - Labor - Accessories
Cometic MLS (Multi Layered Steel) Head Gaskets$95
SFI Approved Harmonic Balancer (Required At All Race Tracks)$150
ATI SFI Approved Super Damper Balancer (Includes Hone To Fit Labor)$295
Moroso Vacuum Pump Kit w/Adjustable Relief Valve (Installed)$975
SFI Heavy Duty Flexplate & ARP Bolt Package$125
JW "The Wheel" Severe Duty SFI Flex Plate$225
PowerMaster Hi-Torque Mini Starter$229
Painless Performance Hot Shot Relay Kit (Recommended for above starter)$39
Edelbrock Aluminum "High Volume" Mechanical Water Pump (Short or Long Version)$250
Meziere 55GPH Electric Water Pump$450
Billet Specialties Tru Trac Serpentine System$Call
Billet Specialties V-Track Pulley System$Call
Polished Cast Aluminum Front Cover (Oil Pan Restrictions May Apply)$50
EnduraShine Intake Finish w/ARP Stainless Steel Hardware (Edelbrock Intakes Only)$225
Custom Powder Coating Packages Available$Call
Custom Locking & Calibrated Dipstick$95
SSRE Engraved Sheet Metal Valve Covers w/Breathers$350
Show Quality Polished Chrome Plated Finish For Sheet Metal Valve CoversAdditional$275