LS7 427 Crate Engines – Mast Motorsports
Cast | Machined | Built in the USA

LS7 427 Crate Engines

The LS7 427's heart and soul is the new 4.125 aluminum block.  The LS7 designation has a Mast Motorsports engineered camshaft that is custom ground on a Mast Motorsports LS7 billet cam core.  The 427 foundation is a honed and decked LS7 aluminum block with a 4.000” forged Callies rotating assembly with Mahle or Diamond forged pistons that is topped off with Mast Black Label heads and a LS7 or MSD Atomic Airforce intake manifold.  ARP fasteners are used throughout and Mast pushrods ride on LS7 hydraulic roller lifters.  The LS7 427 is just one of a diverse line of Mast Motorsports hand built Turnkey Crate Engines that are designed for the Hot Rod/Muscle Car market.  The engine starts at the 630 horsepower mark and is competitively priced for such a powerful complete fuel injected turnkey crate engine.