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!
- Engine Block Material:
- Cast iron
- Engine Block Style:
- Aftermarket
- Deck Height:
- 9.720 in.
- Cylinder Bore Diameter:
- 3.880 in.
- Maximum Bore Diameter:
- 4.250 in.
- Cylinder Bore as Shipped:
- 3.880 in.
- Finished Cylinder Bores:
- No
- Maximum Stroke:
- N/A
- Main Caps Included:
- Yes
- Main Cap Material:
- Billet steel
- Main Bolt Style:
- 6-bolt
- Main Journal Type:
- LS mains
- Rear Main Seal Style:
- 1-piece
- Main Cap Fasteners Included:
- Yes
- Main Bearings Included:
- No
- Engine Block Weight (lbs.):
- 250 lbs.
- Raised Cam Location:
- No
- Cam Bearings Included:
- No
- Freeze Plugs Included:
- No
- Finish:
- Orange
- Quantity:
- Sold individually.
- Notes:
- Semi-finished block.
- Make:
- Chevrolet
- Engine Family:
- Chevy small block Gen III/IV (LS-based engines)
