Parts & Accessories Spare parts Peace be upon you. LQ9 engine for Escalade and Denali. Very clean, removed from a car with 190,000 miles. The difference between the LQ9 and the LQ4 for the pickup truck is that it has a higher compression and more horsepower. The engine is complete with heads and intake manifold. Installation 6500 with the return pipe 7500 without the return pipe