454 to 565ci BBC Street or Marine Short Block

454 to 565ci BBC Street or Marine Short Block


These short blocks are direct replacement 2 bolt main blocks for Stock, Street, Pro Street or Marine grade short blocks. The block is totally reconditioned on a Centroid 4-Axis CNC machining center to a blueprint perfect specification better than brand new blocks and radial clearance for 4¼ stroke. Acceptable to 600hp with power adders if  hypereutectic or forged pistons are used. 91-93° pump gas friendly @ 10:1 compression and 5500 rpm with 34-36° total timing


Core block hot tanked, brushed oil galleys, block inspected • Align honed if needed • CNC blueprint bored • CNC blueprint square decked 90° from crank and cam bars • Plate honed up to 4.310″ • Hot washed, brass freeze plugs and cam bearings are installed • Assembled with a rotator listed below (up to 4.310 bore x 4.0 stroke = 468ci /4.310 x 4.25 stroke = 496ci) NOTE, Dead on 45° bores and deck surfaces can only be machined with a 4 axis cnc machine with probing to know where proper banks angles are off the cam and crank.


AwesomeEngines® Recon .010/.010 or .020/.020 Cast Steel Crank Externally Balanced on a CWT Multi-Bal 5000 Machine to .30 oz inch­ ­• AwesomeEngines® 6.135″ Recon I Beam Steel Rods with ARP Bolts • Up to 10:1 Compression Federal Mogul or Speed Pro Cast Pistons • Moly Rings • Clevite or King Main and Rod Bearings • Rear Main Seal Installed (454 external dampener and flex-plate or flywheel is required)



GM 4 Bolt Main Blocks when available
+ $ 695.00
Steel Billet 3 Center 4 Bolt Main Caps Installed and block Aline Bored then Honed to Specifications
+ $ 995.00
Like Brand New GM Gen V 94-99 take out 4 bolt main one piece rear main seal blocks fully race prepped 4.251/4.28/4.31 only
+ $895.00
Dart M-IV 31243344 Marine or Pro Street Full Water Series new High Performance Block (1 piece ava)
+ $1495.00
AwesomeEngines® One Piece Brand New Splayed Cap 4 Bolt Main Race Block (up to 4.500″ bore) (4.600 add $200)
+ $1495.00
New Scat 9000 Series Cast Steel 4.000″ Stroke Crank and Balance Job
+ $ 295.00
New Scat 9000 Series Cast Steel 4.25″ Stroker Crank up to 496ci with 4.310 Bore, Special Pistons and Balance Job
+ $ 495.00
New 4340 Internally Balanced Steel 4.0″ Stroke Crank, New I Beam 7/16 Rods and Forged Pistons
New 4340 Internally Balanced Steel 4.25″ Crank, I or H Beam Rods, Radial Clearance Block for large stroke and Forged Pistons
+ $1695.00
JE SRP, Mahle or Wiseco Pro True Forged Racing Pistons with Total Seal Hi-Performance Ring Set
+ $ 495.00
Scat 6.135 I-Beam Rods with ARP Bolts for Rotator Listed
+ $ 195.00
Scat 6.385″ I-Beam Rods with 7/16 ARP Bolts for 496ci Rotator Listed and Special Pistons
+ $ 395.00
540 or 565ci 4.500 to 4.600″ Bore, Forged 4340 Crank, H Beam Rods, Forged Pistons with AwesomeEngines® New Race Block
+ $2195.00
Cam Shaft Kit Installed
+ $ 395.00
Deluxe Short Block Kit Installed
+ $ 795.00
Hydraulic Roller Version of Cam Shaft Kit Installed
+ $ 695.00

Cam Shaft Kit Installed

  1. Comp Cams Up To .550″ Lift Hydraulic or Solid Flat Tappet Camshaft (or your choice!)
  2. Install Camshaft, Degree to Proper Specifications Required for Application
  3. Heavy Duty True Double Roller EPW or Liberty Timing Set
  4. 16-Hydraulic  or Solid Flat Tappet Lifters
  5. Camshaft Fastener Kit Installed

Deluxe Short Block Kit Installed

  1. Cam Shaft Kit, Flat Tappet or Hydraulic Roller Installed Properly
  2. Solid  Polished  Aluminum  Timing  Cover Kit Installed
  3. AwesomeEngines® Billet Timing Pointer TDC Set
  4. 6¼” Steel Light Weight Damper TDC Verified
  5. M77HP Oil Pump Kit & Proper Pick Up
  6. Moroso 6qt. Pro Street Oil Pan
  7. All Gaskets to Finish

Ext/Int Balanced Short Blocks Come with Blue Print, Balance Sheet, Product Information, Stickers and Contingency Information

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