1978 Engine Blocks & Accessories Engines & Components - Free Shipping on Orders Over $109 at Summit Racing

Dorman Expansion Plugs 555-100

Expansion Plugs, Steel, Diameter 1.199 in., Various, Each

Part Number: RNB-555-100

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Expansion Plugs 555-095

Expansion Plugs, Steel, Diameter 1.596 in., Various, Each

Part Number: RNB-555-095

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Expansion Plugs 555-105

Expansion Plugs, Steel, Diameter 1.792 in., Ford, Mazda, Each

Part Number: RNB-555-105

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Expansion Plugs 550-027

Engine Expansion Plugs, Steel, 1.875 in. Diameter, 1.870 in. Height, Chrysler, Dodge, Plymouth, Set of 10

Part Number: RNB-550-027

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Expansion Plugs 555-045

Expansion Plugs, Steel, Diameter 2.021 in., Various, Each

Part Number: RNB-555-045

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Expansion Plugs 555-048

Expansion Plugs, Steel, Diameter 2.071 in., Various, Each

Part Number: RNB-555-048

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Expansion Plugs 555-020

Expansion Plugs, Steel, Diameter 1.135 in., GM, Each

Part Number: RNB-555-020

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Expansion Plugs 555-033

Expansion Plugs, Steel, Diameter 1.710 in., Various, Each

Part Number: RNB-555-033

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Expansion Plugs 555-103

Expansion Plugs, Steel, Diameter 1.456 in., Various, Each

Part Number: RNB-555-103

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Expansion Plugs 555-123

Expansion Plugs, Steel, Diameter 1.883 in., Chrysler, Dodge, Plymouth, Set of 10

Part Number: RNB-555-123

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Dorman Expansion Plugs 565-018

Expansion Plugs, Brass, Diameter 1.018 in., Ford, Mercury, Each

Part Number: RNB-565-018

Not Yet Reviewed

Estimated Ship Date: Mar 6, 2026 if ordered today

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Estimated Ship Date: Mar 6, 2026 if ordered today

Milodon Main Stud Kits 81215

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: May 12, 2026 if ordered today

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Estimated Ship Date: May 12, 2026 if ordered today

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ARP High Performance Series Main Bolts 185-5001

5 out of 5 stars ( 1 )

Estimated Ship Date: Today

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PRW Billet Steel Main Girdles 9040001

MAIN GIRDLE, BILLET STEEL, CHEV 400, Does Not incl Studs or Fasteners

Part Number: PQX-9040001

Not Yet Reviewed

Estimated Ship Date: Apr 17, 2026 if ordered today

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Estimated Ship Date: Apr 17, 2026 if ordered today

Pioneer Performance Freeze Plugs 830012

Freeze Plug Kit, Brass, Ford, Big Block, Kit

Part Number: PIO-830012

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Proform Freeze Plug Kits 66556

5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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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: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

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ARP High Performance Series Main Bolts 135-5002

5 out of 5 stars ( 16 )

Estimated Ship Date: Today

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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: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 2026 if ordered today

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Summit Racing™ Freeze Plugs SUM-G1581

4.75 out of 5 stars ( 50 )

Estimated Ship Date: Today

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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: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

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ARP High Performance Series Main Bolts 134-5202

4.75 out of 5 stars ( 37 )

Estimated Ship Date: Today

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Milodon Main Stud Kits 81138

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

Part Number: MIL-81138

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

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ARP High Performance Series Main Bolts 135-5002

5 out of 5 stars ( 16 )

Estimated Ship Date: Today

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Milodon Main Stud Kits 81221

Main Studs, 2-Bolt, Pontiac, 326-455, Kit

Part Number: MIL-81221

3.0 out of 5 stars ( 1 )

Estimated Ship Date: May 13, 2026 if ordered today

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Estimated Ship Date: May 13, 2026 if ordered today

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ARP Main Stud Kits 194-5401

4.75 out of 5 stars ( 11 )

Estimated Ship Date: Today

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PRW Main Girdle Stud Kits 1000207

CHEV 400, Stud Kit, Main Girdle, Includes 10ea, 1/2" Longer Studs, 7/16" -14/20 x 5.00" Studs, PRW Fasteners & Hardware.

Part Number: PQX-1000207

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

PRW Billet Steel Main Girdles 9035101

MAIN GIRDLE, BILLET STEEL, FORD 351W, Does Not incl Studs or Fasteners

Part Number: PQX-9035101

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

World Products Main Caps WPI703370C

Main Caps, Merlin III, 3-Center, Angled Outer Bolts, 4-Bolt, Chevrolet, Big Block, Each

Part Number: WRL-703370C

Not Yet Reviewed

Estimated Ship Date: Mar 17, 2026 if ordered today

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Estimated Ship Date: Mar 17, 2026 if ordered today

World Products Man O'War Bare Blocks 087072

Engines, Bare Blocks, Man O'War Bare Block, 351 Cleveland Mains, 9.500 in. Deck Height, 4-bolt Main Style, Ford, 5.0L, 5.8L, Small Block Windsor, Each

Part Number: WRL-087072

Not Yet Reviewed

Estimated Ship Date: Mar 17, 2026 if ordered today

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Estimated Ship Date: Mar 17, 2026 if ordered today

Melling Engine Expansion Plug Kits MPE-137R

Freeze Plug Kits Bagged- Steel

Part Number: MEL-MPE-137R

Not Yet Reviewed

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today

Melling Engine Expansion Plug Kits MPE-140R

Freeze Plug Kits Bagged- Steel

Part Number: MEL-MPE-140R

Not Yet Reviewed

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today