The 555 engine gains a huge jump in hp and torque over the 468 and the 505 due to fact it has a wider … Many of these are commonly mounted on a front motor plate. Designated the Merlin IV, this new … A big bore, short stroke engine with a shorter rod will accelerate faster and make more power at high RPM. Dart Block Parts Kit. Deck, Chevy, Big Block, Each. 2.750 In MAINS, 1/2 In MAIN STUDS, MORE . In applications (either street or race) where the combination is making 1000 plus H.P. DART Big M GEN V & GEN VI Chevy Big Blocks; DART Big M 8.1 GEN 7 Chevy Big Block; World Products MERLIN III Iron Big Blocks; Ford Engine Blocks; GM LS Series Blocks; XD Xtreme Duty, Turbo-Tuff, N2O Rods, Turbo Rods, Power-Adder Rods; Crankshafts & Rods. The cast-iron Big M big-block is a no compromise design that solves the problems that have plagued big-block racers for years. Part Number: WRL-091101. normally aspirated or the block is being used in a nitrous or blower application, it is HIGHLY RECOMMENDED to use the Merlin III block with the billet, splayed main caps.. Block Material: … Many of the top engine builders, ourselves included, have found the new Dart block to be superior to the earlier generation Big M series Dart block in … Starting with all new foundry tooling and machining fixtures, World has made improvements to virtually every area of the new Merlin IV with the goal of producing a technologically advanced and top-performing … For example, Dart redesigned the lubrication system to create a true ”priority … There was never a factory OE block made in this configuration. Dart's maximum recommended bore and stroke allows displacements up to a massive 638 cubic inches (4.6125" x 4.75"). Free shipping. The block is bored to size with our Centroid touch … Diameter Bore, 2-Piece Rear Main Seal, Chevy, Big Block, Each Part Number: DRT-31213655 "World Products has redesigned the Merlin Big Block Casting, incorporating numerous improvements and new features. $15,990.00 + $250.00 shipping. With deck heights of 9.800” and 10.200” and bore sizes up to 4.600”, the Big M gives you the versatility to build a wide variety of engine combinations. We use a brand new DART Big M block on several of our bbc engines. This … AS-PRODUCED, ASSEMBLY-READY OR CUSTOMIZED. Fits Big Block Chevy BBC 396-572 {MID-LENGTH} Stainless Exhaust Manifold Header. Drop Ship; Free Shipping; $2,367.51. The 555 uses a brand new Merlin IV block. The Dart Big M block and Big Chief head employs two inner head studs per side to ensure even clamping force. Fit Pins in Pistons & Rods . Merlin III Mark IV-style big block is a two-piece rear main seal and compatible with all original GM Mark IV pieces and components including fuel pump, starter, oil filter, and cylinder heads. Merlin IV 9.8 block Ohio Crankshaft 4340 4.250 crank Ohio Crankshaft H6385 rods w/ARP 2000 bolts SRP dome pistons 13.0 compression Brodix BBCXtra 345 heads Merlin X intake manifold Erson/COMP solid roller cam and lifters Race rings and bearings Canton oil pan Harland Sharp rockers rocker stud girdle Ohio Crankshaft billet valve covers Several Options Available! Dimensional specs are spot on, and this has been an issue with other blocks we have used in the past. The New Generation Dart block is light years ahead in overall construction as compared to any of the other blocks on the market. Standard Cam, Nodular Iron Caps Steel Caps(FREE Freeze plugs,Cam plug, dowel pins and Pipe plugs) 091110. FEATURED. Michigan Clevite Rod Bearings H Series. Hone Block with Torque Plate and Valley Lugs. Starting at Four. World Products 091101 - World Products Merlin IV Engine Blocks. It would be more practical to move to the next size, (505) since it's the same price as this engine, but moving up two steps to the 555 is actually the way to go. Dimensional specs are spot on, and this has been an issue with other blocks we have used in the past. Crankshafts. We use a brand new Dart Big M block on several of our bbc engines. 2097 Bart Ave. Warren, MI 48091. Joliet , IL . Dimensional specs are spot on, and this has been an issue with other blocks we have used in the past. Many of the top engine builders, ourselves included, have found the new Dart block to be superior to the earlier generation Big M series Dart block in … Dart Big M Cast Aluminum Engine Block, Big Block Chevy. Popular. Available with … The block can utilize either the OE type roller lifters or +.300'' tall tie bar … Dart engineered the Big M to be the strongest, most reliable, and easiest to build big block on the market. … Many of the top engine builders, ourselves included, have found the new Dart block to be superior to the earlier generation Big M series Dart block in … Big Block Chevy Crankshafts; Small Block Chevy … Merlin III Gen VI-style big block features a one-piece rear main seal and a Gen VI-style oil pan rail and front cover bolt pattern. New features include thicker main webs for increased strength. CNC Stroker Clearance. An important part of the engine-building process is providing the right auxiliary support components such as pumps, filters, regulators, and such. BBC 454/ 477 CHEVY TURN KEY ENGINE big BRODIX 2 ALUM HEADS 1500+HP CHEVROLET. normally aspirated or the block is being used in a nitrous Polish Crankshaft. Deck Block. Final wash all parts for final assembly. Designed to be the strongest, most durable and easiest to build aluminum... Posted 3 days ago $6,749. World Products has redesigned the famed Merlin Big block Chevy casting, incorporating numerous improvements and new features. They have incorporated numerous improvements and new features to virtually every area of the block. Each unit is in-house machined on precision CNC equipment to ensure the highest … Just ask the folks at White Performance and Machine, a full machine shop that’s been in business in Kingsport since 1979. The 555 engine gains a huge jump in hp and torque over the 468 and the 505 due to fact it has a wider bore. Block Applications: The MERLIN III IRON blocks are designed to be a replacement for the Mark IV Big Block Chevy. Not Yet Reviewed. In applications (either street or race) where the combination is making 1000 plus H.P. Maximum Big Block Chevy … WORLD PRODUCTS BBC Merlin IV Cast Iron Engine Block Chevy Big Block, 10.200″Deck, 4.245″ Bore. Home. His love for building big block Chevys led him to opening his one-man engine shop, J Motorhead Racing Engines, in San Diego where he builds big cubic inch, big blocks like this 632 cid Chevy nitrous engine for grudge racing. Many of the top engine builders, ourselves included, have found the new Dart block to be superior to the earlier generation Big M series Dart block in many ways. LABOR: $955.00. - … The 555 uses a new Merlin IV block. Dart Bbc Big M Iron Block - 9.800/4.600 P/N 31223644. Estimated Ship Date: 2/22/2021 if ordered today. Once something of a rarity, Dart's Big M blocks are now commonly used as the basis for big-inch big-block builds. … Cylinder walls are .290” @ 4.600” Bore. Working with top builders and Dart's own championship-winning Pro Stock engine department, they have designed a no-compromise, user-friendly block that solves the problems that have plagued big-block racers for years. $189.68. -55 blocks have a 2.283 cam bore and .904 lifter bore Block Applications: The MERLIN IV IRON blocks are designed to be a replacement for the Mark IV Big Block Chevy. The Mark IV big-block Chevy began life in 1965 and was produced until 1990. Estimated Ship Date: 2/22/2021 if ordered today. Dart 31213655 - Dart Big M Mark IV Big Block Chevy Full Water Cast Iron Bare Blocks Engine Block, Cast Iron, 4-Bolt Mains, 4.600 in. World Products’ Merlin IV engine block is the latest evolution of its aftermarket big-block Chevy block. With multiple deck heights and bore sizes up to 4.600", the Big M Sportsman block gives you the versatility to build a wide variety of engine combinations for street, race or marine. Bore, 2-Piece Seal, 9.800 in. Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.495 in. Working with top builders and Dart’s own championship-winning Pro Stock engine department, they have designed a user-friendly block with the features you need today. King Main Bearings. Crankshaft Crank Key Turning Socket … It would be more practical to move to the next size, (505) since it's the same price as this engine, but moving up two steps to the 555 is actually the way to go. 248-362-1188. $2,978.14. Free shipping. An increased volume priority main oiling system with oil feed for dry sump systems and front oil crossover and restrictor provisions. The New Generation Dart block is light years ahead in overall construction as compared to any of the other blocks on the market. A true priority main oiling system oils the main bearings before the lifters for … With the current tooling setup, both Mark IV and Gen V/VI architecture blocks come from the same raw casting, with only machining processes being different. Dart has reinvented the "Rat Motor" with their cast-iron Big M big blocks. NEW 572 - 588 Big Block Chevy Short Block Price; Merlin IV short deck block 4.560 - 4.625 Bore Ohio Crankshaft 4340 4.375 Crank Ohio Crank 6.535 H beam rods w/ ARP 2000 JE gas ported pistons w/ .043 rings - 14.5:1 compression Big cubic inches In 9.8 block King Bearings : $5,195 assembled $4,945 unassembled: 572 - 598 Big Block Chevy Short Block Price; Merlin IV 10.2" … The New Generation Dart block is light years ahead in overall construction as compared to any of the other blocks on the market. World Products has completely redesigned and re-tooled the famed Merlin Big Block to achieve new heights in performance and ease of use for engine builders and racers. Contact Dart When you are pushing >2,000 horse at the … LS Chevrolet Crankshafts ; Chevy Crankshafts. In that time it was … 6 Custom Dart LS Next2 Block for Mega-Power Builds. “An example where this deck height would help is World’s 9.500-inch deck Merlin IV big-block. For small big-block engines of 500 cubic-inches or less, it can offer some unique advantages. Block 4.600 x 10.2 Deck Big M Sportsman. Dart Crank 4.750 4340 Center Counterweight, blower keyed. In truck … Dart Machinery has completely redesigned the Big M series Block.