Page 1 of Big Block Chevrolet Merlin Engine Blocks by World Products

motown small block race merlin-x blocks economical new aluminum big block chevrolet block technical specifications material 357-t6 aluminum strongest available deck height 9.800 or 10.200 tall deck deck thickness .600 minimum cam bearings standard chevrolet big block set main bearings standard chevrolet camshaft location stock lifter bores indexed stock .843 bore bore 4.240 hone to 4.250 or 4.490 hone to 4.500 maximum bore 4.530 recommended cylinder wall thickness 250 4.500 bore water jackets expanded for better cooling lubrication priority main oiling system oil system features integral boss for front feed boss for rear scavenge rear main cap has provisions for wet sump pump drilled for dry sump valley scavenge lines cross-feed lines between left and right lifter oil galleys filtration integral mount for spin-on filter oil pan rails solid stock width can be clearanced for strokers crank clearance 4.375 for short deck 4.750 for tall deck block using h-beam steel rods sleeves may require notching main caps splayed billet mounts oem starter and oil filter mounts block side ribs for extra strength cooling cross-ribs in valley motor mounts dual front and side cylinder head holes blind tapped to prevent leaks weight approximately 140 lbs with sleeves ready to run world products has taken the design and manufacturing technology used on the highly successful motown lite small block and applied it to the big block chevrolet the most noticeable difference between this and the merlin pro lite block are the reinforcing ribs that run along the side of the block not only are they attractive but they serve a valuable purpose in both improving overall stability and aiding in cooling perhaps the most important factor is that the merlin-x has been designed for 100 compatibility with chevrolet mark iv components no raised cams etc and is intended for use in street and sportsman competition as a result of this the price of the merlin-x is substantially lower dollar for dollar you won t find a better value consider the potential of building an engine using this new merlin-x block plus the new merlin-x 16° cylinder heads and the new merlin-x intake manifold the results could be amazing merlin-x aluminum big block chevy blocks part 085500 085501 085510 085511 description deck ht bore mains main caps merlin-x aluminum bbc block 9.800 4.240 bbc billet steel splayed merlin-x aluminum bbc block 9.800 4.490 bbc billet steel splayed merlin-x aluminum bbc block 10.200 4.240 bbc billet steel splayed merlin-x aluminum bbc block 10.200 4.490 bbc billet steel splayed for an extensive list of prepped block bore sizes in 9.800 or 10.200 deck sizes see www.worldcastings.com rev 2/07 engine blocks 11

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