Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Availability
World Products Parts and Accessories
Something amazing happened in 1987—World Products introduced a set of cast iron cylinder heads that were more budget-friendly than aluminum heads, and delivered...
Something amazing happened in 1987—World Products introduced a set of cast iron cylinder heads that were more budget-friendly than aluminum heads, and delivered impressive power gains over stock. Racers and enthusiasts took notice, and since then World has grown into an icon of the performance industry. World engine blocks are the perfect starting point for your next Chevy, Ford, or Mopar performance engine build--from budget-friendly to all-out competition! Top off your engine build or upgrade your existing performance engine with the increased airflow and top-notch features of World Products cylinder...
Something amazing happened in 1987—World Products introduced a set of cast iron cylinder heads that were more budget-friendly than aluminum heads, and delivered impressive power gains over stock. Racers and enthusiasts took notice, and since then World has grown into an icon of the performance industry. World engine blocks are the perfect starting point for your next Chevy, Ford, or Mopar performance engine build--from budget-friendly to all-out competition! Top off your engine build or upgrade your existing performance engine with the increased airflow and top-notch features of World Products cylinder heads. We've got World Products engine blocks, cylinder heads, and valvetrain components in stock and ready for delivery—shop now!
Showing In Stock Items. Show All 151 Items.
Engine Block, Cast Iron, Nodular Iron 4-Bolt Mains, 4.500 in. Bore, 1-Piece Seal, 9.800 in. Deck, Chevy, Big Block, Each
Part Number: WRL-091105
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Cylinder Head, Sportsman II, Cast Iron, Assembled, 64cc Chamber, 200cc Intake, Chevy, 302, 327, 350, 400, Each
Part Number: WRL-011250-1
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Cylinder Head, Motown, Cast Iron, Bare, 64cc Chamber, 220cc Intake, Chevy, 302, 327, 350, 400, Each
Part Number: WRL-014150
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engines, Bare Block, Cast Iron, Merlin IV BBC, 10.200 in. Deck, 4.595 in. Bore, Splayed Billet Caps, Standard Cam Bearings and Lifters, Each
Part Number: WRL-095112
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Cylinder Head, Merlin, CNC Ported, Cast Iron, Bare, 119cc Chamber, 320cc Intake Runner, Chevy, Big Block, Each
Part Number: WRL-030620CNC
Not Yet Reviewed
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.495 in. Bore, 2-Piece Seal, 10.200 in. Deck, Chevy, Big Block, Each
Part Number: WRL-091111
Not Yet Reviewed
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
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
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Cylinder Head, Merlin, Cast Iron, Assembled, 119cc Chamber, 320cc Intake Runner, Chevy, Big Block, Each
Part Number: WRL-030620M-2
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Cylinder Head, Sportsman II, Cast Iron, Assembled, 64cc Chamber, 200cc Intake, Chevy, Small Block, Each
Part Number: WRL-011250-2
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Hardware Kit, Block Kit, Merlin IV, BBC, Kit
Part Number: WRL-PBMBKBBCIV
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Cylinder Head, S/R, Cast Iron, Assembled, 58cc Chamber, 170cc Intake Runner, Chevy, 305, Each
Part Number: WRL-042650-1
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Cylinder Head, Motown, Cast Iron, Bare, 64cc Chamber, 220cc Intake Runner, Chevy, 302, 327, 350, 400, Each
Part Number: WRL-014250
Not Yet Reviewed
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Engine Hardware Kit, Block Kit, SBF, Kit
Part Number: WRL-PBMBKSBF
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Cylinder Head, Motown 220, Cast Iron, Assembled, 64cc Chamber, 220cc Intake, Designed for Use with Hydraulic Flat Tappet Camshafts, Chevy, Small Block
Part Number: WRL-014250-1
Not Yet Reviewed
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Cylinder Head, S/R Torquer, Cast Iron, Assembled, 76cc Chamber, 170cc Intake, Chevy, 302, 327, 350, 400, Each
Part Number: WRL-042670-1
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Cylinder Head, Windsor Jr., Cast Iron, Bare, 58cc Chamber, 180cc Intake Runner, Ford, 289, 302, 351W, Each
Part Number: WRL-053030
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Valve, Race Flow Series, Intake, EV8 Stainless, 0.342 in. Diameter Stem, 2.020 in. Diameter, 4.925 in. Length, Chevy, Small Block, Each
Part Number: WRL-PBM2105
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Cylinder Head, Merlin, Cast Iron, Assembled, 119cc Chamber, 345cc Intake Runner, Chevy, Big Block, Each
Part Number: WRL-030630-2
Not Yet Reviewed
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Valve Springs, Dual Springs, 416 lbs./in., Damper Included, Each
Part Number: WRL-PBM3425
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Cylinder Head, Merlin, Cast Iron, Bare, 119cc Chamber, 320cc Intake Runner, Chevy, Big Block, Each
Part Number: WRL-030620
Not Yet Reviewed
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Cylinder Head, S/R Torquer, Cast Iron, Assembled, 67cc Chamber, 170cc Intake, Chevy, 302, 327, 350, 400, Each
Part Number: WRL-042660-1
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Estimated Ship Date: Monday 2/23/2026 if shipped by air
Engine Block, Cast Iron, 4-Bolt Mains, 4.245 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Big Block, Each
Part Number: WRL-095000
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Dart Big M Sportsman Big Block Chevy Cast Iron Bare Blocks 31223444
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026
Engine Block, Cast Iron, 4-Bolt Mains, 3.990 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each
Part Number: WRL-087150
Not Yet Reviewed
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each
Part Number: WRL-087110
Not Yet Reviewed
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Engine Block, Cast Iron, 4-Bolt Mains, 4.115 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each
Part Number: WRL-087182
Not Yet Reviewed
Estimated Ship Date: Apr 2, 2026 if ordered today
Estimated Ship Date: Apr 2, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Summit Racing™ SPC Ford 351W Engine Block SUM-150205
Not Yet Reviewed
Estimated Ship Date: Monday 2/23/2026
