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ATK Machined LM7 5.3L Bare Block 3.903" Bore
ATK Machined LM7 5.3L Bare Block 3.903" Bore

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List Price: $750.00
Our Price (USD): $750.00

Availability:: Usually Ships in 24 Hours

ATK's Machined GM LM7/5.3L Bare Block is a great foundation to start building a new engine. This block comes fully machined in the popular 3.903" Bore size to make an Iron LS1/LS6 and is ready to build off!

Block: GM Seasoned LM7 / 5.3L 1999-2007
Bore: Size: 3.903"
Rear Seal: 1pc
Main Caps: 6 Bolt Main
Cam Bearings: Installed
Finished Bore: Yes (Piston size vary, final hone may be needed)
Camshaft: OE Hydraulic Roller

*Can be used in place of LS1/LS6 car applications, but the accessory hole on the Driver Side for the bracket will have to be drilled and tapped. ATK does NOT offer this service.

Notes: Due to the vast selection of parts,styles/sizing of Pistons & Connecting Rods ALL clearances should be checked before final assembly. Final hone and additional connecting rod clearance may be needed.

Features & Benefits
    • Magnafluxed
    • Line Honed
    • Bored to 3.903"
    • Torque Plate Honed
    • Decked (not zero) just a clean up
    • Lifter Bores Honed
    • Cam Bearings Installed
    • Galley Plugs Installed

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