If you're looking to give your ride a serious boost, check out the Texas Speed & Performance resleeved short-blocks. These aren’t just any run-of-the-mill engines; they’re built using a brand-new Gen 4 aluminum block that’s been fitted with Darton dry sleeves. Trust me, these sleeves pack a punch with their higher tensile strength compared to the standard GM sleeves. Plus, they’re thicker, which means you’re getting a more durable setup right out of the gate.

When you order one of these short-blocks, you’ll get a fully assembled unit featuring either a 4.10” or 4.125” stroke crankshaft. You also get to choose between a 24x or 58x reluctor wheel, which is pretty handy depending on your setup. Just a heads up, if you’re planning to add any serious power, stick to a maximum bore size of 4.125”. It’s a good rule of thumb for keeping everything in check.

Now, let’s talk pistons. You can pick from a variety of Wiseco options, ranging from 4.005” to 4.185” bore sizes. All these pistons are made from 2618 forgings and come with lowered ring lands, making them perfect for nitrous or boost applications if you’re feeling adventurous. If you’re thinking about running a power-adder, I highly recommend the 4.00” stroke engine. It offers a thicker piston crown, which is crucial if you’re going to push it beyond 12 psi of boost or a 200 HP shot of nitrous.

Every TSP engine comes with Wiseco pistons and a Napier second ring for top-notch oil control. That’s just part of our commitment to quality. Need your engine fast? We’ve got an expedited service that can get it built and shipped in as little as five business days, depending on parts availability. Just give us a shout for the latest timelines.

If you're serious about cranking up the nitrous or boost, consider upgrading to 1/2" head studs. This upgrade includes ARP hardware and the necessary machine work, and it’s a solid choice for anyone looking to push their engine to the limit. And if you’re sticking with the standard setup, the PRC cathedral-port 247cc heads come with everything you need, including stainless steel valves and a dual valve spring kit.

When it comes to rocker arms, make sure you pick the right set for your cylinder heads. The PRC 247cc heads need an LS1-style rocker arm set, while the LS3 and LS7 heads require their respective sets. We also offer upgraded GM rocker arm sets that include a trunion upgrade kit, which is a must-have since factory rocker arms can be a bit unreliable with aftermarket camshafts.

For those of you working with a dry-sump setup, we’ve got you covered. You can opt for a long-snout crankshaft designed for factory GM dry-sump oiling. If you choose this route, we’ll swap in a GM LS7-specific oil pump and take care of all the necessary dry-sump components. Just keep in mind that a factory GM dry-sump block doesn’t have a provision for an oil dipstick tube, so we won’t tap the block for one if you go this way.

We also offer turn-key long-blocks that come with your choice of oil pan, intake manifold, and throttle body. Want to customize? We’ve got plenty of upgrades available, from ARP bolts to Cometic head gaskets. Just give us a ring, and we can put together an itemized estimate for you.

Every TSP engine includes 12 quarts of break-in oil at no extra cost. This isn’t just a nice touch; it’s essential for proper ring sealing and break-in. Most off-the-shelf oils don’t have the right ZDDP additives for a new engine, and we want to make sure your setup gets the best start possible. Once you’ve broken it in, we recommend using Driven Racing oil, specifically the HR2 conventional non-synthetic.

Bore & Stroke Size Combinations:

• 4.10" Stroke Combinations:
  • 4.005" Bore x 4.10" Stroke = 413 CID
  • 4.03" Bore x 4.10" Stroke = 418 CID
  • 4.07" Bore x 4.10" Stroke = 426 CID
  • 4.08" Bore x 4.10" Stroke = 428 CID
  • 4.125" Bore x 4.10" Stroke = 438 CID
  • 4.130" Bore x 4.10" Stroke = 439 CID
  • 4.155" Bore x 4.10" Stroke = 444 CID
  • 4.185" Bore x 4.10" Stroke = 451 CID
• 4.125" Stroke Combinations:
  • 4.005" Bore x 4.125" Stroke = 415 CID
  • 4.03" Bore x 4.125" Stroke = 421 CID
  • 4.07" Bore x 4.125" Stroke = 429 CID
  • 4.08" Bore x 4.125" Stroke = 431 CID
  • 4.125" Bore x 4.125" Stroke = 441 CID
  • 4.130" Bore x 4.125" Stroke = 442 CID
  • 4.155" Bore x 4.125" Stroke = 447 CID
  • 4.185" Bore x 4.125" Stroke = 454 CID

Features:

• Precision Race Components (PRC) 247cc Cathedral-Port Aftermarket Cylinder Heads with 2.12"/1.60" Stainless Steel Valves & PRC Dual Valve Spring Kit with Titanium Retainers
• Your Choice of TSP Camshaft
• LS2, LS3, or LS7-Specific Timing Set
• Johnson 2110R Lifters
• TSP Hardened Chromemoly Pushrods
• ARP Cylinder Head Bolts & GM MLS Head Gaskets
• TSP Ported LS6 Oil Pump or GM Dry-Sump Oil Pump (C6 Z06, Grand Sport, & ZR1 Only!)
• Includes all necessary bolts, gaskets, and other GM items for a complete assembly

Fitment:

• Cadillac CTS-V 2004-2015
• Cadillac Escalade 2005-2014
• Chevrolet Camaro 1998-2015
• Chevrolet Corvette 1997-2013
• Chevrolet Silverado 1500 1999-2013
• Chevrolet Suburban 2000-2014
• Chevrolet SS 2014-2017
• 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:

• Power Bore Sleeves are not available below 4.07" bore size
• Competition Use Only, Not Legal for Road Use