GM LSX
LSX Bowtie Blocks are the next revolution in high-performance engine-building. This durable iron-block casting is based primarily on GM's production LS7 block, but designed with more material in key areas-including a thicker deck and bores-to support displacements of 454 cubic inches and forced-induction/nitrous combinations of greater than 2000 horsepower. Because the LSX Bowtie block is based on production LS blocks, all of the LS-Series Gen IV crankshafts, oil pans, camshafts, and accessories bolt right up to it. There is also a tall-deck version for building even larger engines. The LSX Bowtie Block comes semi-finished, allowing you to finish it to your needs. Whether you're building a "tame" 500-horse LS-AH street engine for your hot rod or a 1700 horsepower turbo engine for an Outlaw drag racer, the LSX Bowtie Block is the foundation for an unbeatable combination!
Part# 19213964 (9.260” Deck Height): $2304.70*
Part# 19244059 (9.720” Deck Height): $2531.75*
* This item is shipped with Truck Freight. Additional charges will apply
Features:
- Fully CNC machined
- True priority main oiling
- Standard 4.400" bore spacing
- Extra-thick Siamese cylinder bores, ready for final honing
- Semi-finished, machined thicker decks
- LS7-style, 6-bolt dowel-located billet main bearing caps
- Wet-sump and dry-sump oiling capability
- Production-style deep-skirt head bolt holes
- Production bolt hole and thread sizes
- Maintains production exterior accessory mounting provisions
- Front motor plate mounting holes added
- Additional material cast around cam bearings for greater strength
- Standard .842" lifter bores
- Accommodates all LS oil pumps and oil pans
- External oil pump feed (rear of block)
- Main web bay-to-bay breathing holes
- Front oil feed holes can be plugged/restricted for mechanical flat tappet or mechanical roller lifter applications
- Maximum 4.250" bore at .175" minimum wall thickness
- Head bolt holes can be machined for 1/2" studs
- Cam bores can be machined to accept 60mm roller bearings
- Can be machined for larger diameter lifters and/or 1.060" bronze bushings
- Front oil feed lines can be plugged and external oil pump and/or aftermarket dry sump systems can be used via oil pump feed at rear of block
- Belt cam drive systems can be accommodated-some machining will be required
- Front motor plate can be used for racing chassis applications (sprint car, drag racing, truck pulling, etc.)
- Threaded water plugs can be used for external heaters or coolers
- Extra stock for main bearing align-honed
- Orange Powder Coated
Includes:
- Unique cam retainer
- Rear cover
- Lifter retainers
- Production style replacement cam bearings (P/N 19167218)
