GM Gen V Bare Block 5.3 Liter

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  • Regular price $1,299.00
Shipping calculated at checkout.

Factory Mast Introduces Remanufactured Gen V 5.3 Liter Factory OE block.  The Factory Mast product line ensures only the most premium components and rigorous inspection process, combined with proven Mast quality, and experience.

We hand pick these lightly used blocks and put them through an extensive quality inspection and refurbish program.  All blocks are machined, line honed, and decked to ensure they meet our quality standards.  100% inspected, and pressure tested, before shipping to you.

Great for use as a replacement block, choose to add ARP studs, and we can hone to your final piston size before it ships!


  • Material - Aluminum
  • Bore Size - 3.780
  • Deck Height - 9.230


  • ARP Main Studs
  • Final Bore & Hone