How can you tell the difference between LQ4 and LQ9?

How can you tell the difference between LQ4 and LQ9?

The only differences were:

1. The LQ4 came with dished pistons.
2. The LQ9 came with flat top pistons. (This raised the compression ratio, horsepower, and torque.)
3. The LQ9 had injectors with a slightly higher flow rating.

How much horsepower does a LQ9 6.0 have?

345 hp
LS Family: Gen. 3, 6.0L, Iron Block, Truck Engines

How much HP can a stock LQ9 handle?

The LQ4 and LQ9 have very strong blocks. They can handle over 1,000 hp.

What does LQ9 mean?

The LQ9 is a 6.0L Gen. 3 small block engine used in GM trucks between 2002 and 2007. For marketing purposes, it was also known as the Vortec HO 6000 or VortecMAX.

How much boost can a 6.0 LQ9 handle?

6.0 block will handle 1000+rwhp. Stock internals I wouldn’t trust much over 550rwhp. You will easily hit 550+rwhp at 10psi or less.

How do I get more power out of my LQ4?

Upgrading the LQ4/LQ9 Intake Manifold and Throttle Body Porting the intake is one option and a good value. If you’re looking for more power and torque, the Trailblazer SS intake is a step up and a larger 90mm 4-bolt throttle body can be fitted. The F.A.S.T. LSXRT intake allows a bigger 102mm+ throttle body.

Does the LQ9 have VVT?

This was an aluminum blocked engine that had the 243/799 heads but didn’t have AFM/DOD or VVT. This transitioned into the LH9 from 2010 to 2012, identified by a letter P in the 8th digit of the VIN. It still used 799/243 heads but also utilized variable valve timing and had flex-fuel capability.

What is the difference between a LQ4 and LQ9 engine?

But it is usually missing with a wrecking yard engine. The LQ4 piston is dished where as the LQ9 is a flat-top increasing compression to 10:1, and HP to 345 factory. The LQ9 is a limited production engine and VERY desirable as it is the HO 6.0L and comes with a premium price.

What does LQ4 stand for?

by Sameca Pandova. LQ4 and LQ9 were code designations for the General Motors Generation III 6.0-liter, V-8 engines that were used in the company’s truck applications in the mid-2000s. These engines saw duty in several GM trucks in the Chevrolet and Cadillac product lineup.

What’s the difference between a LQ4 and a flat-top?

The flat-top pistons allowed for an increase in compression, and the engine produced slightly more power than the LQ4 — plus-10 horsepower and plus-10 foot-pounds of torque.

Can you change compression ratio on a LQ4 engine?

Changing the pistons for increased compression ratio and camshaft for more horsepower also boosts the engine’s performance. You can change the compression ratio by changing the pistons as well to generate more power. LQ4 and LQ9 engines are modern and, indeed, up to the mark with their distinctive features.