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> MERLIN Short Blocks
MERLIN Short Blocks

How big do you want to go? We’ve got short blocks ranging from 509 to 632 inches based on MERLIN III blocks and other top quality components. More importantly, compare and you’ll discover that you can buy a professionally-built short block assembly for a price that’s comparable to purchasing parts alone from other sources.

BUY NOW!
It is easier than ever to buy a World Products’ Engine or Short Block!
Buy Now
We have put together a team of Engine Builders to build our engines at locations all across the country. All of these Engine Builders have access to our Bills of Material, Dyno Sheets, Technical Info, Parts Numbers & more. They are all qualified to build any of our winning combinations. You can now deal directly with the Engine Builders of your choice about custom options, specific parts & shipping to get the best deal. Simply choose an Engine or Short Block from our website, give the part # to one of our Engine Builders and soon you will have a World Products Engine in your Car, Truck or Boat!

OR YOU CAN...
 Buy From Jegs! Buy From Speedway! Buy From Summit! Buy From Herbert! Buy From Pace! Buy From Comp! Our Online Store!


TECHNICAL SPECS

Deck Height: 9.800” (509, 540), 10.200" (572, 632)
Bore/Stroke: 4.500” x 4.000” (509), 4.500" x 4250" (540), 4.500" x 4.500" (572), 4.500" x 4.750" (632)
Main Caps: 4-bolt nodular splayed
Crankshaft: 4340 Eagle/Scat internally balanced
Connecting Rods: 4340 Eagle/Scat w/L19 bolts
Pistons: Manley/Mahle
Piston Rings: Total Seal
Main Bearings: Clevite H Series
Internal Hardware: ARP

COMPRESSION RATIOS
(calculated with 119cc combustion chamber head, Fel-Pro 1017 gasket, and piston dome as indicated)
509 Street: 9.5:1, 12cc dome
509 Race: 12.8:1, 46cc dome
540 Street: 9.5:1, 5cc dome
540 Race: 13.5:1, 46cc dome
572 Street: 10.8:1, 15cc dome
572 Race: 13.7:1, 42cc dome
632 Street: 10.4:1, -6cc dome*
632 Race: 14.1:1, 33cc dome*
*Compression calculated with Fel-Pro 1057 gasket

MERLIN BIG BLOCK CHEVY
SHORT BLOCKS PART# & PRICE CHART:
AVAILABLE ASSEMBLED OR IN KIT FORM FROM OUR ENGINE BUILDERS OR ONE OF OUR RETAILERS

Part# Engine CID. Type Block Dome Price*
*Suggested Retail Prices
108212 MERLIN 468 Assembly Cast iron 48cc $4,495.95
108222 MERLIN 496 Assembly Cast iron 43cc $4,495.95
108224 MERLIN 509 Assembly Cast iron flat top $4,595.95
108225 MERLIN 509 Assembly Cast iron 12cc $4,595.95
108225A MERLIN 509 Assembly Aluminum 12cc $6,295.95
108227 MERLIN 509 Assembly Cast iron 41cc $4,595.95
108227A MERLIN 509 Assembly Aluminum 41cc $6,395.95
108249 MERLIN 540 Assembly Cast iron -15cc $4,595.95
108250 MERLIN 540 Assembly Cast iron 5cc $4,595.95
108250A MERLIN 540 Assembly Aluminum 5cc $6,395.95
108252 MERLIN 540 Assembly Cast iron 46cc $4,595.95
108252A MERLIN 540 Assembly Aluminum 46cc $6,395.95
108259 MERLIN 572 Assembly Cast iron -20cc $4,595.95
108260 MERLIN 572 Assembly Cast iron 15cc $4,595.95
108260A MERLIN 572 Assembly Aluminum 15cc $6,395.95
108262 MERLIN 572 Assembly Cast iron 42cc $4,595.95
108262A MERLIN 572 Assembly Aluminum 42cc $6,395.95
108270 MERLIN 632 Assembly Cast iron -6cc $6,045.95
108270A MERLIN 632 Assembly Aluminum -6cc $7,845.95
108272 MERLIN 632 Assembly Cast iron 33cc $6,245.95
108272A MERLIN 632 Assembly Aluminum 33cc $8,045.95
108312 MERLIN 468 Kit Cast iron 48cc $3,995.95
108322 MERLIN 496 Kit Cast iron 43cc $3,995.95
108324 MERLIN 509 Kit Cast iron flat top $4,095.95
108325 MERLIN 509 Kit Cast iron 12cc $4,095.95
108325A MERLIN 509 Kit Aluminum 12cc $5,895.95
108327 MERLIN 509 Kit Cast iron 41cc $4,095.95
108327A MERLIN 509 Kit Aluminum 41cc $5,895.95
108349 MERLIN 540 Kit Cast iron -15cc $4,095.95
108350 MERLIN 540 Kit Cast iron 5cc $4,095.95
108350A MERLIN 540 Kit Aluminum 5cc $5,895.95
108352 MERLIN 540 Kit Cast iron 46cc $4,095.95
108352A MERLIN 540 Kit Aluminum 46cc $5,895.95
108359 MERLIN 572 Kit Cast iron -20cc $4,095.95
108360 MERLIN 572 Kit Cast iron 15cc $4,095.95
108360A MERLIN 572 Kit Aluminum 15cc $5,895.95
108362 MERLIN 572 Kit Cast iron 42cc $4,095.95
108362A MERLIN 572 Kit Aluminum 42cc $5,895.95
108370 MERLIN 632 Kit Cast iron -6cc $5,545.95
108370A MERLIN 632 Kit Aluminum -6cc $7,345.95
108372 MERLIN 632 Kit Cast iron 33cc $5,745.95
108372A MERLIN 632 Kit Aluminum 33cc $7,545.95

 
MERLIN Short Blocks
MERLIN Short Blocks
 
 
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