World Merlin IV Big Block Chevy Race Block

World Merlin IV Big Block Chevy Race Blocks


AwesomeEngines® offers all the new World Merlin IV Big Block Chevrolet Redesigned Race Blocks. Incorporating numerous new improvements and features such as; thicker main webs for increased strength, thicker cylinder walls which are now nominally .310″ @ 4.600 bore, revised oiling system with enlarged passages and cross overs in front, uses simple pipe plug type restrictors, relocated .500″ 55mm cam does not require lifter bushings, block accepts cam journals to 2.480″ or 60mm babbitt and 1.060″ lifter bores, new deck heights from 9.500″ to 9.850″ and 10.200 to 12.250″

Fully Race Prepped Includes


Align honed • CNC blueprint bored • CNC blueprint square decked 90° from crank and cam bar to your required deck height • Plate honed from 4.125″ to 4.600″ bore sizes • Brass plugs, cam bearings installed then hot washed for a ready to install your rotator or a new one into this brand new totally redesigned block. 4.120″ 396/402ci bore 9.8 Nodular to a 4.600″ 10.200 Billet Cap 55mm race block

Complete Rotator Installed

Callies, Dart, Eagle, K1 or Scat, your pick from 4.000 to 4.750″ 4340 Crank, internally balanced on a CWT Multi-Bal 5000 Machine to .30 oz inch ­ ­• 6.135 to 6.800″ I or H Beam Rods • 8:1 to 15:1 Compression JE, Wiseco or Mahle Forged Pistons 1/6 3/16 or .043 3.0mm • Total Seal, Plasma Moly, TNT, Hell Fire or Tool Steel Rings • Clevite or King Race Main, Rod Bearings and Rear Seal Installed



Fully Race Prepped and Ready to Assembly Option
+ $ 895.00
55MM Cam and .904″ Lifter Bore with 4.495 to 4.595 Bore 9.800/10.200 for Nodular Cap Merlin IV Block;
+ $ 250.00
55MM Cam and .904″ Lifter Bore with 4.495/4.595″ Bore 9.800/10.200 for Billet Cap Merlin IV Block
+ $ 643.25
55mm Roller Cam Bearings
+ $ 495.00
60mm Babbitt Cam Bearings
+ $ 695.00
9.850 or 10.250 Deck Height
+ $ 250.00
4.630″ Bore Option
+ $ 100.00
Dart 4340 4.0-4.75″ Internally Balanced Steel Crank, 6.135-6.800″ H Beam Steel Rods, ARP Rod Bolts, JE, Wiseco or Mahle Pistons, Rings, Race Bearings
+ $2095.00
Comp Cams Hydraulic or Solid Flat Tappet Camshaft Kit Below
+ $ 295.00
Hydraulic or Solid Roller Camshaft Kit with Torrington Bearing or Bushing Timing Set
+ $ 595.00
Hydraulic or Solid Roller Deluxe Short Block Kit
+ $ 995.00
Cometic or Fel Pro MLS Stainless Steel Marine or Power Adder Head Gaskets
+ $ 195.00
ARP Head Bolt or Stud Kit Used For Plate Honing the Block (from)
+ $ 150.00
Internal Flex-plate and Damper for 396 t0 632ci
+ $ 150.00
SFI Rated Internal Flex-plate and Damper for 393 to 632ci
+ $ 295.00

Cam Shaft Kit

  1. Comp Cams or Erson Up To .600″ Lift Hydraulic or Solid Flat Tappet Camshaft Kit  (roller ava)
  2. Heavy Duty True Double Roller Timing Set Installed
  3. Degree Camshaft to Proper Intake Opening

Deluxe Short Block Kit

  1. Above Hydraulic or Solid Flat Tappet Cam Shaft Kit Installed Properly (roller ava)
  2. Solid Polished Aluminum Timing Cover Kit Installed
  3. AwesomeEngines® TDC Adjustable Timing Pointer
  4. New Internally Balanced Damper TDC Verified
  5. Melling Oil Pump Kit and Proper Pick Up
  6. Moroso 7 Quart Oil Pan Installed
  7. One Piece Oil Pan Gasket

Internally Balanced Short Blocks Come with Blue Print, Balance Sheet, Product Information, Stickers and Contingency Information

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