DART LS Next SHP 427ci 9.240 Deck LSX Stroker Short Block

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Was: $11759.99

Sale: $7699.99

Save: 35%

Save: $4,060.00

SKU: Dart-LS-NextSHP-Stroker427

Our DART LS Next Race 8 Second Dart Short Block is designed for vehicles looking for a strong foundation for high horsepower. This short block is professionally internally balanced within one gram and ready for your big horsepower street or race car. The extra strength of this setup relies upon a SCAT 4340 forged steel crankshaft and set of SCAT 4340 forged steel H beam rods, with arp2000 capscrews, CP power adder pistons and pins, along with the Dart LS Next SHP splayed 4 bolt main LSX block. All of the LSnext blocks are based on Gen III LS design, but can also be used in newer applications. This is the premium 4 bolt iron block available for LSX based motors and can handle upwards of 1500hp. The included components are safe and reliable for up to 1200 hp and the dart CCW crank and rod option is good to 1500hp+. Rings are gapped for boost unless otherwise specified. A full "blue print" build sheet with all clearances is included. The block has been fully machined after receipt from dart including: bore/hone with torque plates, square deck to the right rms for MLS gaskets, line hone for standard size main bearings, and a full deburr is done on the whole block to take away any sharp corners as well as at the top and the bottom of the cylinders. Finally all plugs are installed with sealant and a new oil filter adapter and Mahle rear main seal is installed. Don't hesitate to ask us about custom internal parts for your exact needs, wants, and application!

Long Blocks: There is a $500 labor charge to turn it into a long block. Please ask if you are interested in anything you don't see!

Availability: All Short Blocks are custom built and take 12-16 weeks to build.

Shipping: All Short Block builds are charged the actual cost of shipping which is calculated and charged after you make your order, plus a $45 crating fee.

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Description

Block: Dart LS Next SHP 4 bolt main iron block, 4.125" bore, 9.240 deck height, race prepped and machined

Crank: SCAT 4340 Forged Steel 4" stroke, for 24 or 58 tooth reluctor, 6 bolt flywheel neutral balanced, non "s" crank good for 1200hp+

Rods: SCAT 4340 Forged H beam 6.125" with arp2000 capscrews

Main and Rod Bearings: Clevite H Series, ms2321h mains, cb663hn rods

Cam Bearings: Dart Coated

Pistons: CP bullet series flat top 2618 forged power adder pistons and .220 wall wristpins, -22cc dish for about 9.5:1 #BLS1125-060

Rings: CP rings, steel top, file fit to application

Dart LS Next SHP Short Block Options:

Wiseco dished pistons and GFX ring set: -2.8cc flat top (about 11.5:1 CR) or -8.46cc dished pistons (about 10.8:1 CR). $125
CRANK AND RODS: Callies Compstar Crankshaft and H beam rods w/arp2000 capscrews $350
WRIST PINS: Tool Steel s718 pins for Wiseco pistons over 700hp $230

Dart LS Next SHP Block Specs:

• Dart priority main oiling system with provisions for stock oil filter mounting. • Siamesed cylinder bores with thick walls. • Cylinder barrels extended .375” at the bottom of the bores. • Thick decks ensure reliable head gasket seal. • Blind head bolt holes. • 6 bolt per cylinder capability. • Scalloped water jackets increase flow around cylinders for better cooling. • Clearanced up to 4.100” stroke w/ steel rods. • Splayed outer bolts on middle main bearing caps. • Provisions for LSX roller lifters and cam. • Uses OE front and rear covers. • All OE bolt holes for starter, water pump, etc.