650 Black Label Road & Track Engine

Description

Horsepower:
650 hp
Torque:
570 tq
Streetability:
Good
Idle Quality:
Moderate Choppy
Type:
LS7 7.0L
Displacement:
427 Cubic Inches
Compression Ratio:
11.4:1
Bore x Stroke:
4.125 x 4.000
Rev Limit:
7250 RPM
Crank:
Callies Forged
Rods:
Callies H-Beam
Pistons:
Mahle Motorsports
Cam:
Mast Custom 3-Bolt Core Cam
Heads:
Mast LS7 Black Label 285cc Heads
Intake:
LS7 Intake
Valve Springs:
Mast Premium Dual Springs
*All hp numbers will be within 2% of the advertised number.
Summary:
The LS7 SS’s heart and soul is the new GM Performance LS7 aluminum block. This LS7 engine family utilizes a Mast Motorsports-engineered camshaft that is custom ground on a Mast Motorsports 3 bolt cam core. The 427 SS’s foundation is a fully machined aluminum block with a forged Callies rotating assembly with Mahle pistons that is topped off with LS7 285cc cylinder heads and a LS7 intake manifold. ARP fasteners are used throughout and pushrods ride on GM LS7 hydraulic roller lifters.  This hand built LS7 based engine utilizes a camshaft that has a strong lope that creates great mid and high RPM power for the customer that will be aggressively racing their vehicle but still wants great street manners for a daily driver.