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MTM111-450 - Mast Motorsports LSX 427 WHIPPLE 2.9 Supercharged (750hp), Includes M-90 ECM and Harness

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Availability: Special Order Item
Shipping: FREE 48 State Shipping
Pricing: $23,270.95

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The X-Block 427 HO SC’s heart and soul is the new GM Performance X-block. This X-block engine family utilizes a Mast Motorsports engineered camshaft that is custom ground on a Mast Motorsports 3 bolt cam core. The 427 HO’s foundation is a fully machined X-block with a forged Callies rotating assembly with Mahle pistons that is topped off with Mast Motorsports CNC LS3 casting cylinder heads and a Whipple 2.9L Supercharger. ARP fasteners are used throughout and Mast Black Label pushrods ride on GM Cadillac High RPM hydraulic roller lifters. This hand built X-block based engine utilizes a camshaft that has a moderate lope that creates great RPM power across the band for the customer that will be aggressively racing their vehicle, but still wants great street manors for a daily driver.

Application List



  • 111-450
  • 111-450
  • Mast Motorsports
  • Special Order Item
  • New

Shipping Information

  • Item Requires Shipping
  • 500.0 lbs.
  • FREE 48 State Shipping

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