LS7 Engine Blueprint Illustration Series T-shirt
The LS7 is a 7,011 cc (7.0 L; 427.8 cu in) engine, based on the Gen IV architecture. The block is changed, with sleeved cylinders in an aluminum block with a larger bore 4.125 in (104.8 mm) and longer stroke 4 in (101.6 mm) than the LS2. The small-block's 4.4 in (110 mm) bore spacing is retained, requiring pressed-in cylinder liners. The crankshaft and main bearing caps are forged steel for durability, the connecting rods are forged titanium, and the pistons are hypereutectic. The two-valve arrangement is retained, though the titanium intake valves by Del West have grown to 2.20 in (56 mm) and sodium-filled exhaust valves are up to 1.61 in (41 mm).
Peak output is 505 bhp (512 PS; 377 kW) @ 6300 rpm and 470 lb⋅ft (637 N⋅m) @ 4800 rpm of torque with a 7000 rpm redline. During GM's reliability testing of this engine in its prototype phase, the LS7 was remarked to have been repeatedly tested to be 8000 rpm capable, although power was not recorded at that rpm level, due to the constraints of the camshaft's hydraulic lifters and the intake manifold ability to flow required air at that engine speed.
The LS7 is hand-built by the General Motors Performance Build Center in Wixom, Michigan. Most of these engines are installed in the Z06, some are also sold to individuals by GM as a crate engine. While it has the same displacement the Hennessey Venom GT utilizes an iron block LSX, not an LS7.
After an extensive engineering process over several years, Holden Special Vehicles fitted the LS7 to a special edition model: the W427. The HSV-tuned engine produced 375 kW (510 PS; 503 bhp) @ 6500 rpm and 640 N⋅m (472 lb⋅ft) @ 5000 rpm of torque. It was unveiled at the Melbourne International Motor Show on February 29, 2008 and went on sale in August 2008. The first Australian car to be fitted with this engine, however, was the CSV GTS of 2007, which was claimed to have a power output of 400 kW (536 hp) and 600 N⋅m (440 lb⋅ft).
We offer this design in our favorite, the Premium Tri-Blend that is super soft, stretchy and feels like your favorite shirt you've owned for years. It runs a bit small, so size up. To select this version, choose one of the vintage colors in the drop down menu. For those not down with the Tri, we also offer it in 100% cotton, which runs true to size.