Alright, let’s talk about the Texas Speed & Performance 370 C.I.D. LQ9 short-block. This isn’t just any engine; it’s built on a solid GM LQ9 6.0L iron block, which means you’re starting with a robust foundation. When you grab one of these, you’ll get a fully-assembled short-block that features a factory GM 3.622" stroke crankshaft. You can choose between a 24X or 58X reluctor wheel, depending on what fits your setup best.

Now, onto the pistons. We’ve got Wiseco pistons that are tailored to fit LS1, LS2, LS6, L92, LS3, and most aftermarket cylinder heads. If you’re leaning towards Diamond pistons, they’ll work with LS1, LS2, and LS6 heads. CP Pistons? They’ll handle LS1, LS2, LS6, L92, and LS3 heads like a champ. Most piston sets come with a 4.03" bore unless you specify otherwise. And if you want to get a bit creative, we have custom build options available too.

When it comes to crankshafts, we’ve got you covered with Callies and Lunati options, as well as connecting rods from Callies, Lunati, and Oliver. Plus, every engine comes with the necessary oil and coolant plugs already installed, so you can hit the ground running.

If you’re planning to push your engine hard with nitrous or boost, consider upgrading to 1/2" head studs. This upgrade includes ARP hardware and the necessary machine work. And if you’re using PRC aftermarket casting cylinder heads, they already have the larger bolt holes ready to go.

For those of you wondering about fitment, this Gen III block is compatible with all the necessary LS1 covers, gaskets, and components, but it does use LS2/LS3 cylinder head bolts. It’s a straightforward swap for many popular models.

Need your engine quick? We offer an expedited service that can have your engine built and shipped in as little as five business days, depending on parts availability. Just give us a shout for the details!

One last thing—every TSP engine comes with 12 quarts of break-in oil at no extra cost. Seriously, this stuff is crucial. Proper break-in oil is key for ring sealing against the cylinder walls when you first fire it up. Most off-the-shelf oils lack the necessary ZDDP additives for a new engine’s break-in, so we want to make sure you’re set up for success. After the break-in, we recommend using Driven Racing oil, specifically the HR2 conventional non-synthetic.

Features:

• Includes everything in our short-block package plus:
• PRC 225cc As-Cast Cathedral Port Cylinder Heads with TSP Dual Valve Spring Kit
• Your choice of TSP Camshaft
• LS2-Specific Timing Set
• Johnson 2110R Lifters
• TSP Hardened Chromoly Pushrods
• GM Cylinder Head Bolts & GM MLS Head Gaskets
• GM High Performance Oil Pump
• All necessary bolts, gaskets, and GM items included

Fitment:

• Cadillac CTS-V 2004-2007
• Cadillac Escalade 2005-2014
• Chevrolet Camaro 1998-2015
• Chevrolet Corvette 1997-2013
• Chevrolet Silverado 1500 1999-2013
• Chevrolet SS 2014-2017
• Chevrolet Suburban 2000-2014
• Chevrolet Tahoe 2000-2014
• Chevrolet Trailblazer 2006-2009
• GMC Sierra 1500 1999-2013
• GMC Yukon 1999-2014
• Pontiac Firebird 1998-2002
• Pontiac G8 2008-2009
• Pontiac GTO 2004-2006
• Universal Retrofit 1997-2016

Note:

• Competition Use Only, Not Legal for Road Use
• Uses a Gen III Block