Engine Blocks & Parts | Summit Racing

World Products Merlin IV Engine Blocks 091100

World Products Merlin IV Engine Blocks 091100

Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.245 in. Bore, 2-Piece Seal, 9.800 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091100

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

World Products Merlin IV Engine Blocks 091107

Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.595 in. Bore, 2-Piece Seal, 9.850 in. Deck, Chevy, Big Block, Each

Part Number: WRL-091107

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

World Products Merlin IV Engine Blocks 091107-55

Engine Block, Cast Iron, 4-Bolt Mains, 4.590 in. Bore, 9.850 in. Deck, 55mm Cam Bore, Nodular Iron Main Cap, 2-Piece Rear Seal, Chevy, Big Block, Each

Part Number: WRL-091107-55

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

World Products Merlin IV Engine Blocks 095010-55

Engines, Bare Block, Cast Iron, Merlin IV BBC, 9.800 in. Deck, 4.495 in. Bore, Billet Caps, 55mm Babbitt Cam Bearings and 0.904 in. Lifter bores, Each

Part Number: WRL-095010-55

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

World Products Merlin IV Engine Blocks 095012-55

Engines, Bare Block, Cast Iron, Merlin IV BBC, 9.800 in. Deck, 4.595 in. Bore, Billet Caps, 55mm Babbitt Cam Bearings and 0.904 in. Lifter bores, Each

Part Number: WRL-095012-55

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

World Products Merlin IV Engine Blocks 095017

Engine Block, Cast Iron, 4-Bolt Mains, 4.595 in. Diameter Bore, 9.850 in. Deck, Billet Steel Main Caps, 2-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: WRL-095017

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

World Products Merlin IV Engine Blocks 095100

Engines, Bare Block, Cast Iron, Merlin IV BBC, 10.200 in. Deck, 4.245 in. Bore, Splayed Billet Caps, Standard Cam Bearings and Lifter bores, Each

Part Number: WRL-095100

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

World Products Merlin IV Engine Blocks 095110-55

Engines, Bare Block, Cast Iron, Merlin IV BBC, 10.200 in. Deck, 4.495 in. Bore, Splayed Billet Caps, 55mm Babbit Cam Bearings and 0.904 Lifter, Each

Part Number: WRL-095110-55

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

World Products Main Cap Fasteners 701416

Main Studs, 4-Bolt Main, Merlin IV, Billet Main Caps, Chevy, Big Block, Kit

Part Number: WRL-701416

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

S&S Cycle Powersports Engine Fasteners 31-2003

S&S Cycle 5/16-24 UNF x 5.750in Crankcase Alignment Stud

Part Number: SSY-31-2003

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

S&S Cycle Oil Filter Components 31-2011-S

S&S Cycle 70-99 BT .340in x .420in x 1.375in Crankcase Oil Screen Spring

Part Number: SSY-31-2011-S

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

World Products Main Caps 703370-5

BILLET MAIN CAPS

Part Number: WRL-703370-5

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

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Estimated Ship Date: Jan 20, 2026 if ordered today

Cylinder Works Powersports Cylinders CW50010K01

CYLINDER KIT 95MM/STD KTM

Part Number: CLW-CW50010K01

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

PRW Main Cap Stud Kits 1045422

Main Studs, 8740 Chromoly, 200,000 Psi Tensile Strength, 2-Bolt Main, Chevy, Big Block, Kit

Part Number: PQX-1045422

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Pioneer Performance Freeze Plugs PE-100-R

Freeze Plugs, Steel, Chevy, 267, 283, 302, 305, 307, 327, 350, Kit

Part Number: PIO-PE100R

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Jan 8, 2026 if ordered today

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Estimated Ship Date: Jan 8, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ Freeze Plugs SUM-G1581

4.75 out of 5 stars ( 48 )

Estimated Ship Date: Monday 12/22/2025

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Pioneer Automotive Engine Expansion Plugs PE-101-R

BLOCK PLUG KIT

Part Number: PIO-PE101R

Not Yet Reviewed

Estimated Ship Date: Jan 8, 2026 if ordered today

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Estimated Ship Date: Jan 8, 2026 if ordered today

Milodon Main Stud Kits 81117

Main Studs, Straight 4-Bolt Main, Chevy, 350, 400, with Windage Tray, Kit

Part Number: MIL-81117

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Milodon Main Stud Kits 81125

Main Studs, 2-Bolt Main, Chevy, 350, 400, Kit

Part Number: MIL-81125

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Milodon Main Stud Kits 81138

Main Studs, 2-Bolt Main, Chevy, Big Block, Kit

Part Number: MIL-81138

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Milodon Main Stud Kits 81139

Main Studs, 2-Bolt Main, Chevy, Big Block, with Windage Tray, Kit

Part Number: MIL-81139

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Milodon Main Stud Kits 81215

Main Studs, 2-Bolt, Oldsmobile, 350 Diesel, 400, 425, 455, Kit

Part Number: MIL-81215

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

PRW Main Cap Stud Kits for 2016-2024 CAMARO, 2014-2019 CORVETTE - 1034613

Main Studs, 8740 Chromoly, 200,000 Psi Tensile Strength, Gen V, LT1, Chevy, Kit

Part Number: PQX-1034613

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

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Estimated Ship Date: Feb 23, 2026 if ordered today

Clevite Engine Parts Cylinder Sleeves 226-4641

CYL SLEEVE ISX

Part Number: CLE-2264641

Not Yet Reviewed

Estimated Ship Date: Feb 2, 2026 if ordered today

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Estimated Ship Date: Feb 2, 2026 if ordered today

Melling Cylinder Sleeves 590203

Cylinder Sleeve, Cast Iron, 3.938 in. Bore I.D., 0.125 in. Wall Thickness, 6.750 in. Length, Each

Part Number: MEL-590203

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today

Melling Cylinder Sleeves CSL119NX

CYLINDER SLEEVE

Part Number: MEL-CSL119NX

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Estimated Ship Date: Jan 16, 2026 if ordered today