Bare Block, LSR, Aluminum, LS Mains, 4.125 in. Bore, 9.25 in. Deck Height, Each
Brand:
Fleece Performance
Manufacturer's Part Number:
FPE-LSR-SD10X
Part Type:
Engines, Bare Blocks
Product Line:
Fleece Performance Freedom Series LSR Aluminum Engine Blocks
Summit Racing Part Number:
FLE-FPELSRSD10X
UPC:
732777409730
Main Journal Type:
Chevy LS
Engine Block Material:
A-356 aluminum
Engine Block Style:
Aftermarket
Engine Block Deck Height:
Standard deck
Deck Height (in.):
9.251 in.
Cylinder Bore as Shipped:
4.110 in.
Cylinder Bore Diameter:
4.125 in.
Maximum Bore Diameter (in.):
4.185
Camshaft Location:
Standard
Engine Block Weight (lbs.):
150 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
Remanufactured:
No
Quantity:
Sold individually.
Fleece Performance Freedom Series LSR Aluminum Engine Blocks
Fleece Performance Freedom Series LSR is a premium aluminum Gen IV LS standard deck race block designed for high performance applications.

Cast from a proprietary 356 T-6 aluminum ingot, the Freedom Series LSR engine blocks are engineered with precision and designed for durability to deliver unmatched strength and compatibility with OEM LS accessories. Reinforced from top to bottom, the blocks are built for maximum performance with added features, like cross bracing in the lifter valley, maximized crankshaft saddle radius, and a 40 percent larger footprint for the main cap contact surface to the skirt wall.

Whether you're upgrading for competitive racing or seeking peak performance, the Fleece Performance Freedom Series of engine blocks ensure reliability and excellence in every detail, making them a perfect choice for serious enthusiasts and professionals alike.

Features:

* Cross-braced lifter valley:
-- Provides added structural integrity and individual drain backs for improved reliability
* Heavy-duty deck thickness:
-- A robust 0.750 in. deck thickness for enhanced durability
* Enhanced design:
-- Additional stock to the front and rear valley walls for increased strength
-- A minimum 0.625 in. skirt wall thickness
-- Complete reinforced exoskeleton combined with Hot Isostatic Pressing (HIP) ensures the highest quality casting available
* Billet main caps:
-- Billet construction ensures stability and precision fitment
-- Utilizes 8740 alloy M10 main studs and side bolts along with dowels on the inner studs of the block for superior clamping and reliability
-- Exclusive domed main cap design provides maximum crankshaft support
* Maximized crankshaft saddle radius:
-- Optimized for performance under high-stress conditions
* Lightweight:
-- Weighs only 120 lbs. with main caps
-- Strong yet lightweight solution
* Priority oil system:
-- Oil rifling provides priority oil feed to critical bottom-end components
-- Reduces heat, wear, and risk of failure
* Ductile iron sleeves:
-- Durable wear-resistant surface with improved shock absorption

Engine block is shipped with:

* Durabond GMP-9 cam bearings
* LSR rear cover, rear cover gasket, and hardware
* Plug kit
* Precision ground 1018/1020 steel cam thrust plate
* Transmission dowel pins
* Oil galley barbell plug
* Rear main seal