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  1. Intro to the LQ4 and LQ9 · Help Center - Summit Racing

    Chevy LQ4 Engine Specs Chevy LQ9 Engine Specs Upgrading the LQ4 and LQ9 Engines Benefits Both these engines are strong and durable. Many people use them with boost or nitrous. With upgraded …

  2. Chevy LQ4 Engine Specs · Help Center - Summit Racing

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

  3. Upgrading the LQ4 and LQ9 Engines · Help Center

    Upgrading the LQ4 and LQ9 Engines Getting more power out of my engine On a stock engine, the following upgrades can improve performance and fuel economy: A Cold Air Intake Kit Headers An …

  4. 450+ hp LQ4 Build on a budget - LS1TECH

    Nov 6, 2012 · Generation III Internal Engine - 450+ hp LQ4 Build on a budget - I know this has been covered before and I know this is probably getting old. But I'm new to the engine building world.

  5. I don't know the VIN. Which LS engine do I have? · Help Center

    Which LS engine do I have? Identify Chevy LS Engines by Inspection Before you begin any project, you need to know the starting point. When it comes to Chevrolet's 3rd and 4th generation small blocks, …

  6. All about Flexplates, Converters, Transmissions and Spacers

    Mar 26, 2015 · It appears that most (all?) LQ4 6.0l Vortec truck engine have the long crank; there are reports that some 4.8l Vortec engines also have the long crank. Obviously these long crank engines …

  7. I know my VIN. Which LS engine do I have? · Help Center

    Which LS engine do I have? Identify Chevy LS Engines by VIN Chevrolet's 3rd and 4th generation small block engines are generally known by their RPO code. You can determine the RPO code if you have …

  8. How much to you gain putting 243 heads on a lq4 - LS1TECH

    Nov 2, 2011 · Generation III Internal Engine - How much to you gain putting 243 heads on a lq4 - I don't know if it is even worth it but I am going to change the cam in my 2007 lq4 and was wondering if it …

  9. Lq4 engine - LS1TECH - Camaro and Firebird Forum Discussion

    Dec 4, 2025 · Generation III Internal Engine - Lq4 engine - Hi, l have recently purchased a LQ4 6.0 truck motor. I was going to change the crank rods and pistons for twin turbo use. I have contacted some …

  10. I have an early LS engine with a long crank. What do I need to bolt-up ...

    Most GM transmissions will bolt on without an issue. The problem with most LS engines is the short crankshaft. The torque converter pilot is too short to engage the back of the crank. The early LQ4 …