LT Cast Iron LTX - Gen V Cast Iron - L8T - 6.6 Truck Block
Factory Mast Introduces Blue Printed and prepped L8T Cast Iron Blocks. The Factory Mast product line ensures only the most premium components and rigorous inspection process, combined with proven Mast quality, and experience.
Introduced in model year 2020 for the GM Silverado HD pick up. The GM Cast Iron Gen V (LT Series) block promises to deliver on big power potential when paired with the right Mast Motorsports or Factory Mast components.
We take the Factory GM L8T block, line hone and install high tensile main studs. We true up the deck surface, and ensure this block is ready for serious performance.
WILL NOT WORK WITH FACTORY MAST 4.175 Bore Rotating Kit
** Block Requires Final Machining for assembly
These blocks have the potential for big power without huge prices. Uses GEN V- 6.2 Aluminum Cylinder Head.
Capable of 4.125" (+) stroke, 4.125" (+) bore size.
- Material - Cast Iron
- Bore Size - 4.065
- Deck Height - 9.230
- Weight - 245 lbs
- High Tensile Main Studs
- Blue Printed & Machined True