CHEVROLET Chevy small block Gen I Engine Blocks & Accessories

Main Studs, Straight 4-Bolt Main, Chevy, Large Journal, Small Block, with Milodon Caps, Kit

Part Number: MIL-81130

Not Yet Reviewed

Estimated Ship Date: Feb 5, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Expansion Plugs

Part Number: NAL-10241154

Not Yet Reviewed

Estimated Ship Date: Mar 9, 2026 if ordered today

• Drop Ship
• Special Order

AN Block Adapters, -12 AN Adapters, Clear Anodized, Chevy, Small Block, Kit

Part Number: PGP-PRP-6850

Not Yet Reviewed

Estimated Ship Date: Dec 2, 2025 if ordered today

• Drop Ship
• Special Order

Sleeve Assembly Ring Set - Buick 301,350L Eng. (77-79); Checker 327,350 Eng. (69-79); Chev.

Part Number: MAH-S50564CP030

Not Yet Reviewed

Estimated Ship Date: Dec 12, 2025 if ordered today

• Special Order

Sleeve Assembly Ring Set - Buick 301,350L Eng. (77-79), Checker 327,350 Eng. (69-79), Chev.

Part Number: MAH-S50564CP

Not Yet Reviewed

Estimated Ship Date: Dec 12, 2025 if ordered today

• Special Order

Main Studs, Straight 4-Bolt Main, Chevy, 350, 400, Kit

Part Number: MIL-81115

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 6, 2026 if ordered today

• Special Order

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: Feb 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: MIL-81125

Not Yet Reviewed

Estimated Ship Date: Feb 6, 2026 if ordered today

• Special Order

Main Studs, 4-Bolt Main, Chevy, Large Journal, Small Block, with Milodon Caps, Windage Tray, Kit

Part Number: MIL-81129

Not Yet Reviewed

Estimated Ship Date: Feb 4, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084010

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Block, Cast Iron, 4-Bolt Mains, 4.115 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084030

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 11, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Block, Cast Iron, 4-Bolt Mains, 3.995 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084080

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Block, Cast Iron, 4-Bolt Mains, 4.115 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084130

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 11, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engines, Bare Blocks, SBC Motown Block, 400 Mains, 9.025 in. Deck Height, 4-bolt Main Bolt Style, Chevrolet, V8, Chevy Small Block Gen I, Each

Part Number: WRL-084130RC-904

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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: Jan 12, 2026 if ordered today

• Drop Ship
• Special Order

EXP PLUG KIT

Part Number: PIO-PE-102

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

• Special Order

EXP PLUG KIT

Part Number: PIO-PE-121

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

• Special Order

EXP PLUG KIT

Part Number: PIO-PE-121-B

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

• Special Order

EXP PLUG KIT

Part Number: PIO-PE-124

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

• Special Order

EXP PLUG KIT

Part Number: PIO-PE-124-B

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

• Special Order

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

Part Number: HRS-H350C-1

Not Yet Reviewed

Estimated Ship Date: Jan 2, 2026 if ordered today

• Drop Ship
• Special Order

Four Bolt Main Cap Kit

Part Number: PIO-839022

Not Yet Reviewed

Estimated Ship Date: Nov 28, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Main Cap, Rear, Merlin II, 4-Bolt, 400 Mains, Billet Steel, Chevrolet, Small Block, Each

Part Number: WRL-703355R

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

• Free Shipping
• Special Order

Main Cap, 3-center Position, Steel, Chevy, Each

Part Number: DRT-32731030H

Not Yet Reviewed

Estimated Ship Date: Nov 20, 2025 if ordered today

• Free Shipping
• Special Order

Main Cap, Front, Ductile Iron, 2-Bolt Mains, Chevy, SHP Dart Block, Each

Part Number: DRT-32791020

Not Yet Reviewed

Estimated Ship Date: Nov 20, 2025 if ordered today

• Special Order