Engine Blocks & Parts | Summit Racing

World Products Merlin IV Engine Blocks 091103

World Products Merlin IV Engine Blocks 091103

Engine Block, Cast Iron, 4-Bolt Mains, 4.245 in. Diameter Bore, 9.800 in. Deck, Nodular Iron Main Caps, 1-Piece Rear Main Seal, Chevy, Big Block, Each

Part Number: WRL-091103

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Freeze Plugs MPC-145

Freeze Plug - Each - steel

Part Number: MEL-MPC-145

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Freeze Plugs MEP-23

Freeze Plug - Each - steel

Part Number: MEL-MEP-23

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Cylinder Sleeves CSL1161

Cylinder Sleeve, Cast Iron, 4.375 in. Bore I.D., 0.094 in. Wall Thickness, 7.500 in. Length, Each

Part Number: MEL-CSL1161

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Engine Expansion Plug Kits MPE-132BR

Freeze Plug Kits Bagged - Brass

Part Number: MEL-MPE-132BR

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Cylinder Sleeves CSL165

Cylinder Sleeve, Cast Iron, 3.875 in. Bore I.D., 0.094 in. Wall Thickness, 7.000 in. Length, Each

Part Number: MEL-CSL165

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Cylinder Sleeves CSL447

Cylinder Sleeve, Cast Iron, 2.500 in. Bore I.D., 0.094 in. Wall Thickness, 7.000 in. Length, Each

Part Number: MEL-CSL447

5.0 out of 5 stars ( 1 )

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 CSL506A

Cylinder Sleeve, Cast Iron, 3.188 in. Bore I.D., 0.125 in. Wall Thickness, 9.250 in. Length, Each

Part Number: MEL-CSL506A

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 Engine Expansion Plug Kits MPE-609BR

Engine Expansion/Freeze Plugs, Brass, with (6) MPC-30B, (1) MPS-175, (3) MPP-554, and (2) MPP-639, Ford, Lincoln, Mercury, V8, Kit

Part Number: MEL-MPE-609BR

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Cylinder Sleeves CSL130

Cylinder Sleeve, Cast Iron, 4.125 in. Bore I.D., 0.094 in. Wall Thickness, 6.750 in. Length, Each

Part Number: MEL-CSL130

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Cylinder Sleeves CSL167

Cylinder Sleeve, Cast Iron, 4.063 in. Bore I.D., 0.094 in. Wall Thickness, 6.313 in. Length, Each

Part Number: MEL-CSL167

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Cylinder Sleeves CSL820

Cylinder Sleeve, Cast Iron, 3.228 in. Bore I.D., 0.079 in. Wall Thickness, 7.000 in. Length, Each

Part Number: MEL-CSL820

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Freeze Plugs MPC-226

Expansion Plug, Steel, 0.500 in. O.D., 0.250 in. Deep, Each

Part Number: MEL-MPC-226

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Dorman Expansion Plugs 555-027

Engine Expansion Plug, Steel, 1.5 in. Width, 0.570 in. Height, Buick, Chevy, Fiat, GMC, Set of 10

Part Number: RNB-555-027

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Freeze Plugs MPS-126B

Shallow Plug - Brass - Each

Part Number: MEL-MPS-126B

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Dorman Expansion Plugs 555-021

Engine Expansion Plugs, Steel, 1.188 in. O.D., 0.510 in. Height, Set of 10

Part Number: RNB-555-021

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Cylinder Sleeves CSL456

Cylinder Sleeve, Cast Iron, 2.375 in. Bore I.D., 0.094 in. Wall Thickness, 6.500 in. Length, Each

Part Number: MEL-CSL456

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 CSL401

Cylinder Sleeve, Cast Iron, 2.750 in. Bore I.D., 0.094 in. Wall Thickness, 7.500 in. Length, Each

Part Number: MEL-CSL401

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Cylinder Sleeves CSL196

Cylinder Sleeve, Cast Iron, 4.250 in. Bore I.D., 0.094 in. Wall Thickness, 6.500 in. Length, Each

Part Number: MEL-CSL196

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Cylinder Sleeves CSL164

Cylinder Sleeve, Cast Iron, 4.125 in. Bore I.D., 0.094 in. Wall Thickness, 6.063 in. Length, Each

Part Number: MEL-CSL164

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Milodon Main Stud Kits 81187

Main Studs, 2-Bolt Main, AMC, 290-401, Kit

Part Number: MIL-81187

5.0 out of 5 stars ( 1 )

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Melling Cylinder Sleeves CSL205

Cylinder Sleeve, Cast Iron, 3.188 in. Bore I.D., 0.125 in. Wall Thickness, 6.500 in. Length, Each

Part Number: MEL-CSL205

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Dorman Expansion Plugs 555-036

Freeze Plugs, Steel, 1.765 in. Diameter, Set of 10

Part Number: RNB-555-036

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Howards Cams Extreme Billet Main Caps H350R-1

Main Cap, Billet Steel, 3-Center, Straight Outer Bolts, 4-Bolt, Chevy, Small Block, Each

Part Number: HRS-H350R-1

Not Yet Reviewed

Estimated Ship Date: Monday 12/22/2025

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Estimated Ship Date: Monday 12/22/2025

Melling Cylinder Sleeves CSL160

Cylinder Sleeve, Cast Iron, 4.040 in. Bore I.D., 0.094 in. Wall Thickness, 6.750 in. Length, Each

Part Number: MEL-CSL160

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

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Estimated Ship Date: Jan 15, 2026 if ordered today