MOPAR PERFORMANCE 
BLOCKS & RELATED COMPONENTS

 

HEMI

 

CAST IRON 426 STREET HEMI BLOCK
Maintains 4.25" bore size and water flow between the cylinders for improved cooling and sealing durability. If you want to drop in a Hemi where a Big Block used to be, select the block with cast/drilled ears to accommodate the Big Block engine mounts.

P5155072 Rough bored at 4.19" $ 2,579.95
P5007668AB Finish bored at 4.25" $ 2,579.95
P5007669AB Big Block engine mount ears finished at 4.25" cast $ 2,480.00
P5007670AB Stress-relieved - rough bored at 4.19" $ 2,440.00
P5007648AB No Tappet Machining $ 2,440.00

 

HEMI CAST IRON SIAMESED BORE BLOCKS
Siamesed-Bore 426 Hemi® Blocks give engine builders flexibility. Blocks can be bored to the stock size of 4.25", but are specifically designed to be bored larger. Remember to sonic check each block if you approach or exceed the 4.50" bore diameters.
P5007622AB Hemi Cast Iron Siamesed Bore Block - Rough bored at 4.19" $ 2,440.00
P5007623AB Hemi Cast Iron Siamesed Bore Block - Rough bored at 4.498" $ 2,520.00
P5007627AB Hemi Cast Iron Siamesed Bore Block - Raised Cam, Rough Bored at 4.498" $ 2,520.00

 

 

BIG BLOCK

 

 BIG BLOCK CAST IRON SIAMESED BORE BLOCKS
 Mopar Siamesed-Bore Big Blocks can be bored to the stock size of 4.25", but are specifically designed to be bored larger. Mopar recommends that you sonic check each block if you approach or exceed the 4.50" bore diameters.
P5007625AB 440 Big Block Cast Iron Siamesed Cross-Bolt Block - Rough Bored at 4.50" $ 2,499.95
P5007626AB* 440 Big Block Cast Iron Siamesed Cross-Bolt Block - Raised Cam, Rough Bored at 4.498" $ 2,499.95
P5007624AB 440 Big Block Cast Iron Siamesed Cross-Bolt Block - Rough Bored at 4.19" $ 2,499.95

*Please see 2005 MP Catalog or call for special modifications needed for this block. 

 

BIG BLOCK CAST IRON WEDGE BLOCKS
Cast Iron Wedge Blocks feature factory-size bores and maintain water flow between the cylinders (not siamesed) for improved cooling and sealing durability. These blocks are fully water-jacketed.
P5007671AB 426 Max Wedge Cast Iron Block - 2-Bolt Mains, Finish Bored at 4.25" $ 2,499.00
P5007815AB 440 Wedge Cast Iron Block - 2-Bolt Mains, Finish Bored at 4.32" $ 2,524.95

 

 

SMALL BLOCK

 

CAST IRON "R3" RACE ENGINE BLOCKS
Building on our heritage, the R3 race block family offers the latest in design technology along with the options to meet your specific needs.
P4876381AB Small Block Cast Iron "R3" Race Engine Block — Siamese $ 2,999.00
P4876671AC Small Block Cast Iron "R3" Race Engine Block — Siamese $ 2,899.00
P4876672AC Small Block Cast Iron "R3" Race Engine Block — Non-Siamese $ 2,199.00
P4876673AC Small Block Cast Iron "R3" Race Engine Block — Siamese $ 2,899.00
P4876674AC Small Block Cast Iron "R3" Race Engine Block — Non-Siamese $ 2,199.00
P4876791AC Small Block Cast Iron "R3" Race Engine Block — Siamese $ 2,199.00
P4876792AC Small Block Cast Iron "R3" Race Engine Block — Non-Siamese $ 2,249.00
P4876793AC Small Block Cast Iron "R3" Race Engine Block — Siamese $ 2,199.00
P4876795AB  Small Block Cast Iron "R3" Race Engine Block — Non-Saimese $ 2,049.00
P5007360AB Small Block Cast Iron "R3" Race Engine Block — Siamese $ 3,699.00

 

 

340 REPLACEMENT ENGINE BLOCK
Machined to work with all 340 production components. Special features include brand-new castings made from high nickel cast iron. It has thicker webbing and pan rail, a thicker deck surface and thicker bore walls in major/minor thrust directions.
P5007552 340 Replacement Engine Block — Non-Siamese

$ 2,499.00

 

 

ENGINE BLOCK COMPONENTS

 

REAR MAIN BEARING RETAINER SEAL KIT
Kit contains engine rear main seal retainer, retainer bolts and seal package.
P4529732 Rear Main Bearing Seal Retainer Kit (426 Hemi® and Big Block)

$ 99.95

 

 

OIL SEAL PACKAGE
Oil Seal Package includes crank seals and installation tool.
P4271961 Oil Seal Package (426 Hemi® and Big Block)

$ 8.95

 

 

BLOCK HARDWARE PACKAGE
 This Block Hardware Package includes all necessary dowels, plugs, bushings and keys, as well as core plugs, rear cam bearing plug, drive gear bushing and head dowels.
P5249259  Block Hardware Package (426 Hemi® and Big Block) $ 34.95
P5249261  Block Hardware Package (Small Block) $ 34.95

 

 

FREEZE PLUGS
These round, press-in engine block Freeze Plugs fit standard or Mopar Performance race cast iron blocks.
P5249708 Brass Freeze Plugs (426 Hemi® and Big Block) $ 24.95
P5249706 Brass Freeze Plugs (Small Block) $ 24.95

 

 

MAIN BEARING CAP BOLT PACKAGE
This Main Bearing Cap Bolt Package was engineered to original factory specifications for repair and maintenance on your engine package. Magna-fluxed and hardness checked. Includes the necessary hardware for a complete engine kit.
P4120096 Main Bearing Cap Bolt Package — 2-Bolt Application

$ 79.95

 

 

 

ENGINE TEARDOWN GASKET SETS
Includes all gaskets needed for bearing, bore, or cylinder head or race inspection teardown. Includes oil pan, cylinder head, valve cover, chain case cover, intake manifold, and oil pump gaskets.
P4120692 340-360 standard (340 & 360) $ 62.95
P3690850 383 V8 engine (383 & 440) $ 56.95
P3690175 440 V8 engine (426 W & 440) $ 54.95
P4452112 "B" Race engine (383 & 400) $ 119.95
P4452113 "RB" Race engine (426 W & 440) $ 119.95
P3412083 426 Hemi V8 engine (1966 & later) $ 103.95

 

DOUBLE ROLLER TIMING CHAINS AND SPROCKET SETS
 High strength double roller for added durability and decreased rotational friction versus the production silent-chain. Magna-fluxed to ensure reliable performance.

P5249267 Small Block, 5.2L/5.9L Magnum/Jeep Engines One Bolt Mount, 3 Matched Keyways  $ 61.95
P5249268 383-440-426 Hemi Engines, One Bolt Mount $ 72.95
P5249269 383-440-426 Hemi Engines, Three Bolt Mount $ 89.95

 

ALL- OUT RACE ROLLER TIMING CHAIN AND SPROCKET SETS
Matched sprockets and double roller chain for all-out race applications. Kit features three matching keyways to adjust cam timing. Includes magna-fluxed sprockets and roller timing chains.
P5249131 Small Block Replacement Double Roller Chain (Cloyes Race Application) 

$ 52.95
P4876560 Small Block Oversize Race Chain & Sprockets 0.010" oversize  $ 74.95
P4876559 Small Block Oversize Race Chain & Sprockets 0.005" oversize  $ 156.95
P3690866 Standard Size Race Chain & Sprockets $ 149.95
P4452815 All-Out Race - 383-440-426 Hemi Engines, Three Bolt Mount, Standard Size $ 114.95

 

P4349816 shown

CHROME PLATED FRONT TIMING CHAIN COVER
Chrome-Plated Front Timing Chain Cover includes cover, seal and gasket.
P4349816 Chrome-Plated Front Timing Chain Cover (1968-91 426 Hemi® and Big Block) $ 41.95
P4876377 Sand Cast Race Timing Chain Cover — 9.560" Deck Height (Small Block and V6) $ 359.95
P4876631 Sand Cast Race Timing Chain Cover — 9.00"-9.20" Deck, Standard Water Pump (Small Block, V6) $ 279.95
P4876632 Sand Cast Race Timing Chain Cover — 9.00"-9.20" Deck, Race Water Pump/Front Motor Plate $ 359.95
P5249930 Production Timing Chain Cover — 9.560" Deck, Non-Chrome (Small Block and V6) $ 114.95

 

 

P4529256 shown

CHROME BOLT PACKAGE FOR FRONT TIMING COVER
Engine chrome dress-up projects are incomplete without chrome bolts.
P4452795 Chrome Bolt Package for Front Timing Cover (426 Hemi® and Big Block) $ 21.95
P4529256 Chrome Bolt Package (Small Block) $ 37.95

 

 

FRONT TIMING COVER GASKET & SEAL
P4876280 Front Cover Seal (426 Hemi®, Big Block, Small Block) $ 10.95
P4876769 Front Cover Gasket (426 Hemi® and Big Block) $ 6.95
P4876700 Front Cover Gasket — for Short Deck (9.00"-9.20") Race Blocks, Use with Covers (P4876631-32) $ 7.95
P4876701 Front Cover Seal Retainer for Sand-Cast Race Cover $ 15.95

 

 

TIMING CHAIN TENSIONER
This Timing Chain Tensioner stabilizes cam timing by reducing timing chain slack. It can be used in place of thrust plate P5249637.
P5007709 Timing Chain Tensioner (Small Block and 3.9L, 5.2L, 5.9L Truck Magnum/Jeep® Engines)

$ 31.95

 

 

FORGED STEEL CONNECTING RODS

These durable connecting rods are forged from 4340 super high strength steel as a single piece. Includes nut and bolt.
P5249898 Hemi engine - floating pin 6.86" center to center

$ 109.95

 

 

FORGED ALUMINUM PISTONS
This forges aluminum piston features valve notches and floating pin. Top & second rings measure 1/16", while oil ring measures 3/16". 
P4876026 Hemi Forged Aluminum Piston

$ 71.95

 

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