What is the compression ratio of a LQ4?
9.4:1
LS Family: Gen. 3, 6.0L, Iron Block, Truck Engines
| Performance Specifications | |
|---|---|
| Compression Ratio | 9.4:1 |
| Horsepower Rating | 300-330 hp |
| Torque Rating | 360-370 ft./lbs. |
How much can you bore a LQ4?
The 6.0L block—used in the LQ4, LQ9, and LY6—is the most popular with hot rodders. It features a 4.000-inch bore and can be purchased brand new for $800. It can safely accommodate a 4.030-inch bore and is good for 421 ci when matched with a 4.125-inch stroke.
Which LS block is best for boost?
If you’re planning on boosting your project the 4.8L truck engine will be perfect for you. The 4.8L can take insane amounts of boost completely stock and will really perform well. If you don’t want a barebones 5.3L or 4.8L you could always step up to a 6.2L truck block which is based on the LS3 engine.
What kind of engine does a Chevy LQ4 have?
Chevy LQ4 Engine Specs. The LQ4 is a Gen. 3 small block engine used in GM trucks between 1999 and 2007. For marketing purposes, it was also known as the Vortec 6000. The information listed here is for the stock engine.
What’s the difference between a LQ4 and a 6.0L?
Although the LQ9 is the HO (High Output) 6.0L it came in a 1500 chassis. Any LQ4 from an Escalade or Denali will have been mated to a 4L60e or 4L65e as well. Transmissions were sized to chassis capacities NOT engine horse power ratings.
What kind of transmission does an escalade LQ9 have?
Transmission Considerations: ALL LQ9’s came with 4L60e or 4L65e depending on year. Although the LQ9 is the HO (High Output) 6.0L it came in a 1500 chassis. Any LQ4 from an Escalade or Denali will have been mated to a 4L60e or 4L65e as well.
What kind of engine does a Chevy 6.0 have?
The Chevy 6.0 is a small-block V8 engine that produces 300hp-345hp and 360tq-380tq, depending on the engine version. The 6.0 engine had nine variations over its 20 year life span.
What’s the compression ratio of a GMC LQ4 engine?
Later ones have aluminum heads, the same head as the LQ9. LQ4s have a 9 something compression ratio; LQ9s have a 10 something compression ratio. LQ9/late LQ4 heads have the same ports and valves as LS6 engines.
What kind of engine is the LQ4 truck engine?
The LQ4 and LQ9 are Gen. III, 6.0L, iron block, truck engines. The LQ4 served in anything from bread-vans and boats to SUV’s between 1999 and ’07. It started off life like any normal truck engine. Iron heads, small cam and the old SBC crank rear flange thickness.
How many horsepower does a GMC LQ9 engine have?
This engine was introduced in other truck lines as VortecMAX for 2006. It features high-compression (10:1) flat-top pistons for an extra 10 hp (7.5 kW) and 10 ft·lbf (14 N·m), bringing output to 347 hp (257 kW) and 380 ft·lb (515 N·m). LQ9s are built only in Romulus, Michigan.
What are the specs of a Vortec LQ4?
The Gen III LQ4 engine was capable of achieving 300 horsepower at 4400 RPM and 360 lb-ft at 4000 RPM, while the LQ9 was rated at 345 hp at 5200 RPM and 380 lb-ft of torque at 4000 RPM. The Gen IV model L76 had rated horsepower of 367 at 5400 RPM and peak torque of 375 lb-ft at 4400 RPM.