Which is better lq4 or lq9

The engines are mechanically similar and have gained huge popularity. It has also become the go-to performance engine. The engines can also be swapped with each other when needed. General Motors cars such as the GMC, SUVs, and such use these engines frequently because of their functionality, availability, and popularity.

The engines have the same bore and stroke, but there are some differences. The LS1 has dished pistons, whereas the LS1 has smooth, flat ones, which provides a higher compression ratio. A higher compression ratio also ensures greater horsepower and torque. Hence, performance in LS1 is also better. The rods in the LS1 are better compared to that of the LQ4 too.

Yes, you can put heads on LQ4, and it will be a great move to do so. There will be a decent increase in the compression ratio, and it will help quite a bit in driving. The head flow is almost the same, but the compression rise is reason enough to use heads. All the GM heads of the 3rd generation are interchangeable because these have the same flow characteristics. This design also ensured abundant availability of the component in the market. Hence, you can swap the heads according to your needs.

Then again, to get decent performance, the right engine must be paired up with the correct heads. You can expect to get an HP of out of a 6. It is more than enough power for any general user.

The piston in LS is flat with a smooth surface. This design ensures a high compression ratio and, evidently, better performance. Then again, to get the most out of the engine, you should get forged internals for the engine. Chevy 6. The engines regularly make it to the list of long-lasting vehicles. Regular servicing and proper care increase the longevity of the engine by a great margin.

Hence, you can expect it to last for 10 to 20 years very easily. The engine has a very solid build, so it can easily handle horsepower of more than You can use superchargers, turbos, and nitrous oxide for higher performance, but upgrading the internals is suggested. Then again, changing the pistons increases the compression ratio to generate more horsepower and torque.

By using a cam kit, the horsepower further reaches a new peak with even better performance. Yes, the LQ4 engine was first introduced in the LS trucks back in , and it was in production till There are several generations of the engine. Share More sharing options Followers 0. Reply to this topic Start new topic.

Prev 1 2 Next Page 1 of 2. Recommended Posts. Posted July 17, Link to comment Share on other sites More sharing options Fireman31 Posted July 17, There are some aftermarket manifolds that are high rise and will clear the accessory drive but then you run into hood issues. Some just cut us the factory power steering bracket to clear.

A little modding and it can be done. Aftermarket tensioners and pulleys may be necessary. My pedal will not communicate with the tbody. Things are going good. What is the best rad design to use for my car , place it where the old rad was or put in in front of where the old rad was and add electric fans. That is the route I would go. And if you want to save a few more hp, an electric water pump is good for a few more ponies. Pingback: LQ4 6. Has anyone ever installed head on the LQ4.

I have a set I can install. But my plan is cam swap with truck cam , comp springs ,lifters tray, chain ,pump. And I fear above a 93 octane. Even though I have HP tuner. Any advice greatly appreciated. I suggest starting there. Will sense i will be diving into motor what can I do for a little more power and still pass smog. Thanks for your question. I have a Sierra LQ4 with k miles and a knock. A rotating LS assembly kit from Summit Racing would be my recommendation.

Build a stroked version of what you have now and it will be bullet proof using forged internals. A good cam that stays below 0. Pingback: Extra Stuffing! These stroked solutions recommended do not seem to be conducive to proper ring pack distancing from the crown of the piston. Please point me in the right direction if I am wrong.

Have a Yukon xl Denali with the LQ4 6. Like what factory gm heads, intake, etc will swap directly over with very little no modifications? I want to send out a big thank you to Brian for this information. After a custom tune and an exhaust repair, the increase in hp is noticeable. I also am former USAF and again, thank you.

Your email address will not be published. Your Website. Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed. Summit Racing Equipment. III, 6. These engines are some of the most popular GM LS engines for several reasons: With iron block strength, they are the first choice for boost or nitrous applications. GM made a bazillion of them which helps keep prices down.

The heads flow similarly to LS6 heads, but have bigger chambers making them boost friendly. Displacement— cubic inches to be exact. Below are more upgrades that will improve the performance of the LQ4 and LQ9 engines. Intake Duration 0. Still can drive daily. Engine Size Bore Dia. He is an attorney with experience in health care, family and criminal prosecution issues.

Visual Distinctions Visual identification between the two engines is very difficult, since the primary difference is the pistons and wrist pin rods, which are part of the engine's rotating assembly and thus enclosed in the engine block.

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