648 Big Block Chevy Drag Race Short Block
Drag Race Short Blocks

648 Big Block Chevy Drag Race Short Block $8,795

648 Big Block Chevy Drag Race Short Block Basic Version Shown
New! 648TALL DECK $8,795

There's An Old Saying There's No Substitute For Cubic Inches And Those Words Are Still True Today. With Just A Little Of Our "Special Sauce" Trickery We're Now Able To Offer This 648 Cubic Inch Short With Just A Very Modest Bump In Price Over Our Tried And True 632. Limited Availability So If You Want One Get Your Order In Soon...

Different Compression Ratios Available

New For 2026!
  • Dart Big "M" 4 Bolt Race Prepped Block w/Splayed Caps
  • Manley 4340 4.875" Stroke Forged Steel Crank
  • Manley 4340 6.700" H-Beam Steel Rods w/2000 Bolts
  • Wiseco Q8/Q16 15.2-1 Gas Ported Pistons w/.043 Rings
  • Total Seal Plasma Moly Ring Set
  • Clevite 77 "H" Series Main & Rod Bearings
  • Complete Assembly Internally Balanced
Shafiroff Racing Engine Upgrade Packages
Camshaft Installation Package$895
Includes: Custom Steel Billet Roller Cam, Cloyes Billet True Roller Timing Set w/Torrington Bearing, Official GM Performance Chrome Timing Cover, Cam Button And ARP Cam Bolts. Camshaft Installed And Degreed, Cam Button Shimmed To Installed Front Cover.
Camshafts
7/4 Swap Firing Order Cam $100
Large Core Cam (Block Machining Required) $100
Lifters
Morel HIPPO/Black Mamba or Isky Red Zone/EZX Roller Lifters. Call For Details. $Call
Timing
Cloyes 2 Piece Aluminum Timing CoverImageShafiroff Racing Available Options Close$195
Jesel "Original 2 pc" Belt Drive $1145
Deluxe Short Block Version$2095
Includes: Custom Steel Billet Roller Cam, Rollmaster Billet Timing Set w/IWIS Chain & Torrington Bearing, Cam Button & ARP Cam Bolts, Chrome GM Timing Cover And Tavia Pointer, SFI Harmonic Balancer, Moroso Custom Pro Eliminator Steel Stroker Pan w/Louvered Tray and Main Cap Partitions, Moroso Oil Pump & Severe Duty Tig-Welded Pick-Up. All Gaskets, Seals And Hardware. Completely Assembled With Camshaft Installed and Degreed.
Camshafts
7/4 Swap Firing Order Cam $100
Large Core Cam (Block Machining Required) $100
Harmonic Balancer
ATI SFI Approved Super Damper Balancer (Includes Hone To Fit Labor) $295
Lifters
Morel HIPPO/Black Mamba or Isky Red Zone/EZX Roller Lifters. Call For Details. $Call
Timing
Cloyes 2 Piece Aluminum Timing CoverImageShafiroff Racing Available Options Close$195
Jesel "Original 2 pc" Belt Drive $1145
Oil Pumps - Oil Pans - Vacuum Pump
Moroso "Winged Design" Race Prepped Oil Pump (Requires Pro Pan) $50
Moroso HD Billet Aluminum Oil PumpImageShafiroff Racing Available Options Close$395
Moroso 20385 Aluminum Pro Eliminator Pan $425
Shafiroff Racing Engine Options
Blocks
Machine Block and Install Lifter Valley Screen Kit $125
Machine Block for .904 Lifters (for .937 - Call) $350
Machine Block for Large Core (55MM) Camshaft $350
O-Ring Block w/Stainless Steel Wire (requires copper head gaskets) $395
Dart Steel Billet Main Cap Upgrade $600
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 $865
Crankshafts
Callies USA Made 4340 Magnum Pro Series Crank $2045
Connecting Rods
Molnar Severe Duty 4340 H-Beam Rods w/ARP 2000 Asymmetrical Bolts $225
Callies Ultra H-Beam 4330M Timken Steel Rods w/ARP H-11 Bolts $1220
Oliver Steel Billet Rods $1120
GRP Aluminum Rods $Call
Pistons - Pins - Rings - Bearings
Wiseco Nitrous Version Gas Ported Pistons w/.043 Rings $195
Custom Diamond/JE Pistons (Any Compression Ratio) From$395
H13 Tool Steel "Heavy Wall" Wrist Pins $250
Total Seal AP Steel Nitrous Rings $175
Tool Steel "M2" Rings for Extreme Nitrous $395
Calico Coated Bearing Package $175
Additional Parts - Labor - Accessories
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
Heavy Metal Installed If Required. (Large Diameter Over 1" Slightly Higher) Per slug$95
Weld Caps (if required) Per cap$35
Cam Cut Counterweights (if required) $Call
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
Lucas Break In Oil. Call For Viscosity Recommendation. Priced Per Quart. Quart$8