Management. The LMF features variable valve timing. Applications: 2010–2014 Chevrolet Express ton AWD 2010–2014 GMC Savana ton AWD 4.125 in. bore blocks (2006–present) Inspired by the LS1.R in size and performance goals, this family of blocks was designed for race-oriented performance. The only engine with this bore size that was used in a production vehicle is the LS7 with the LSX being only for aftermarket use. One unique feature of this family is that the cylinders are siamesed, no water passages between neighboring cylinders. This was done to increase both bore size and block strength. 7.0 L LS7 LS7 can also refer to a 454 over the counter 460+ hp high compression engine Chevrolet Big-Block engine of the 1970s The LS7 is a engine, based on the Gen IV architecture. The block is changed, with sleeved cylinders in an aluminum block with a larger bore and longer stroke than the LS2. The small-block's 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 and sodium-filled exhaust valves are up to . Peak output is at 6300 rpm (72.0 BHP/L) and of torque at 4800 rpm 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. The 2014 and 2015 Z28 were the only Camaros to receive the 427 LS7. As of early 2022, the LS7 is no longer being supplied as a crate engine, with Chevrolet intending to fulfill all current orders until inventory is depleted. 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 at 6500 rpm and at 5000 rpm of torque. It was unveiled at the Melbourne International Motor