Fleece Performance GM LSR Standard Deck Wet Aluminum Engine Block
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
The FPE-LSR-SD10X is a premium aluminum Gen IV LS Standard Deck Race Block designed for high-performance applications. Engineered with precision and built for durability, this race block delivers unmatched strength and compatibility with OEM LS accessories. Whether you’re upgrading for competitive racing or seeking peak performance, the FPE-LSR-SD10X ensures reliability and excellence in every detail. Proudly made in the USA, it’s 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: Features a robust 0.750-inch deck thickness for enhanced durability.
Enhanced design: Includes additional stock to the front and rear valley walls for increased strength along with minimum 0.625-inch skirt wall thickness. Complete reinforced exoskeleton combined with Hot Isostatic Pressing (HIP) ensures the highest quality casting available.
Billet main caps: Premium billet construction ensures stability and precision fitment. Utilizes 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 for maximum crankshaft support.
Maximized crankshaft saddle radius: Optimized for performance under high-stress conditions.
Lightweight: Weighs only 120 pounds with main caps, offering a strong yet lightweight solution.
Priority Oil System: Oil rifling provides priority oil feed to the critical bottom-end components, reducing heat, wear, and risk of failure.
Ductile iron sleeves: Provide a durable wear-resistant surface with improved shock absorption to handle high-performance applications.
IN THE BOX
The engine block is shipped with the following:
· 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 barbel plug
· Rear main seal
BUILDER NOTES
The LSR block is semi-machined and requires final machining to the builder’s final specifications for the application, required machining includes:
· Final deck surface (0.011” additional provided on the deck surface)
· Final cylinder hone (sleeve inside diameter of 4.110” provided)
· Final OD on the crankshaft mains (0.003” additional provided for the final hone)
The camshaft and lifter bores are finish machined and ready for precision bearings and lifters.
TECHNICAL SPECIFICATIONS
Deck Height: 9.251”
Cylinder Bore: 4.110”
Maximum Cylinder Bore Size: 4.185”
Cam Bore: 2.3075" - 2.3088"
Lifter Bore: 0.8430" - 0.8435"
Main Bore: 2.7475" - 2.7485"
Main studs: M10, 8740 alloy (190,000 PSI tensile strength)
Head studs: Threaded for M11 bolts/studs
