$$2,987.23Engine \ Blocks \ Small Block Chevy19260093
GMP19260093
GM Perfomance 19260093 LSX Bowtie Cast Iron Block Block, 9.260 in. Deck, 3.880 in. Bore
Delivering the seemingly impossible combination of professional racing-level strength and entry-level affordability, the LSX Bowtie Block is 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 thicker deck ...
GM Performance Parts19260093 LSX Bowtie Cast Iron Block Block, 9.260

GM Performance Parts

GM Perfomance 19260093 LSX Bowtie Cast Iron Block Block, 9.260 in. Deck, 3.880 in. Bore

$2,987.23

Item #: GMP19260093

Mfg Part #: 19260093

Applies To Continental U.S. orders only

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Qty Available: 0

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Specifications
Block Specifications
Main Journal Type
LS mains
Engine Block Style
Aftermarket
Deck Height (in)
9.260 in.
Cylinder Bore as Shipped
3.880 in.
Engine Block Material
Cast iron
Engine Block Weight (lbs)
225 lbs.
Main Bolt Style
6-bolt
Main Caps Included
Yes
Main Cap Material
Billet steel
Main Cap Fasteners Included
Yes
Main Bearings Included
No
Rear Main Seal Style
1-piece
Finished Cylinder Bores
No
Raised Cam Location
No
Cam Bearings Included
No
Freeze Plugs Included
No
Quantity
Sold individually.
Notes
Semi-finished block. 4.25 max stroke.
Applications
Make
Chevrolet
Engine Family
Chevy small block Gen III/IV (LS-based engines)
General
Brand
GM Performance Parts
Item #
GMP19260093
Mfg Part #
19260093
Description

Delivering the seemingly impossible combination of professional racing-level strength and entry-level affordability, the LSX Bowtie Block is 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 thicker deck and bores - to support displacements of 454 cubic inches or more, and unique six-bolts-per-cylinder-headclamping capability that enables forced-induction and nitrous combinations of greater than 2,000 horsepower.

 

Because the LSX Bowtie block is based on production LS blocks, all of the LS-Series Gen IV cylinder heads, crankshafts, oil pans, camshafts, and accessories bolt right up to it. There is also a tall-deck version for building even larger engines. Chevrolet Performance delivers the LSX Bowtie Block semi-finished, allowing you to finish it to your needs. Whether you’re building a “tame” 500-horse street engine for your hot rod or a 1,700 horsepower turbo engine for an Outlaw drag racer, the LSX Bowtie Block is the foundation for an unbeatable combination - at an unbeatable price!

 

LSX Bowtie Block - Standard Deck
- 3.880" finished siamese cylinder bores
- 9.260" semi-finished standard deck height (ready to be decked)
- 4.250" maximum stroke (professional engine builders only!)
- Capable of 364- to 482-cubic-inch displacements
- Orange powder-coated finish
- Accepts all LS and LSX Series heads, cranks, cams, etc.
- Approximate finished weight is 225 pounds

LSX Bowtie Block specs and features include:
- CNC-machined cast-iron block
- True priority main oiling
- 6-head bolts per cylinder
- Standard 4.400" bore spacing
- Extra-thick siamese cylinder bores
- 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
- 8mm exterior/interior fifth- and sixth-head bolt holes
- Standard 0.842" lifter bores
- Accommodates all LS oil pumps and oil pans
- External oil pump feed (rear of block)
- Main web bay-to-bay breathing holes to support greater horsepower
- Includes unique cam retainer, rear cover and lifter retainers

For the advanced LSX competition engine builder, you will fully enjoy the following features of the new LSX Bowtie Block:
- Front oil feed holes can be plugged/restricted for mechanical flat tappet or mechanical roller lifter applications
- Can be machined safely to 9.200" deck height
- Maximum 4.200" bore at .200" minimum wall thickness (naturally aspirated applications)
- 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 - may be required with certain large stroke/aluminum rod combinations
- 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
- 400 mPa tensile strength iron

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