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All Texas Speed & Performance 454 C.I.D. LSx short-blocks use a new GM Performance Parts LSx iron block! The standard price includes a fully-assembled GM LSx short-block with a 4.125" stroke crankshaft withyour choice of a 24X or 58X reluctor wheel.
The standard price also include a Wiseco 4.185" -2.8cc piston set. All Wiseco pistons offered are built to accommodate LS1, LS2, LS6, L92, LS3, and most aftermarket cylinder heads and valve configuration.
Any TSP 454 LSx will use a 4.185" bore piston set, unless otherwise noted. Custom builds are available. We offer multiple brands of connecting rods and crankshafts to suit any type of application. Every engine will come standard with the necessary oil and coolant plugs already installed in the block. We do offer an optional conversion package that will include the LS2 timing cover with camshaft position sensor, LS2 valley cover, LS2 lifter trays, LS2-specific timing set, and plug-n-play harness extensions for the camshaft position and knock sensor harnesses. This will be required if you are installing the engine into an LS1 vehicle. Feel free to give us a call, and we will be more than happy to put an itemized estimate together for you! We also offer additional discounts if you pay via a cashier's check or wire transfer. All engines will ship via truck freight, so if are purchasing online the shipping costs listed will NOT be correct! We will contact you with a shipping cost after your order has been placed. All prices listed do not include the applicable shipping costs!
All Wiseco pistons will use a 1.2mm/1.2mm/3.0mm ring pack with a steel top ring and Napier second ring. This will be the standard ring pack used with any of our Wiseco exclusive piston sets, and this ring pack will also be offered with any Wiseco off-the-shelf piston set. We do build many engines to keep in stock, and we do our best to offer a variety to suit everyone’s wants/needs. With that said, not all engines will be in stock. The average build time will normally take three to four weeks once all parts are at the machine shop. This is only an estimate since circumstances and wait times will vary. Please give us a call for an accurate, up-to-date time quote.
For any nitrous setup exceeding a 150HP shot or any boosted application exceeding 10 psi, we recommend a steel top ring set. The steel top ring will handle the added heat of the nitrous and boosted applications much better than a plasma moly top ring set. All of our engines with Wiseco pistons will use a Napier second ring for maximum oil control. This is just another step that we take with all TSP short-blocks to ensure you get the best quality possible!
We do offer an upgrade to 1/2" head studs. The price listed for the 1/2" head stud upgrade will include the cost of the ARP hardware, as well as the necessary machine work. <b>You MUST select a set of PRC aftermarket casting cylinder heads for this upgrade!</b> All of the PRC aftermarket casting cylinder heads already have the larger bolt holes to accommodate 1/2" head studs. The GM castings will not have the larger bolt holes, which would require additional machining. So, please make your cylinder head selection accordingly if you plan to upgrade to 1/2" head studs.
When selecting your crankshaft, you will see options for a long-snout dry-sump crankshaft for factory GM dry-sump oiling. This is what you will need if the engine is being installed in a 2006+ Corvette Z06, Grand Sport, or ZR1. When you select a dry-sump crankshaft, we will automatically make the appropriate changes to the remainder of your engine build. A dry-sump crankshaft does NOT have a provision for an oil dipstick tube, so the dipstick hole on the LSx block will need to be plugged for these applications. We do offer the oil dipstick plug if you need one.
The GMPP LSx block will offer maximum clamping force of the cylinder heads to the block when combined with any of the aftermarket 6-bolt cylinder heads. We do not recommend the 4.125" stroke crankshaft or 4.185" bore size for extreme shots of nitrous or large amounts of boost. For extreme applications, we recommend using a 4.00" stroke crankshaft to allow for better pin placement and a thicker crown on the pistons. For the 454 C.I.D. LSx, we recommending limiting nitrous use to no more than a 150 HP shot. We also offer an expedite service to be able to have your engine built and ready to ship in as little as five business days! The build time will vary according to parts availability. Give us a call for more information!
All TSP engines will include 12 quarts (16 quarts for dry-sump) of Joe Gibbs break-in oil for no additional cost. Proper break-in oil and procedures for your engine are just as important as the build process! The Joe Gibbs break-in oil allows for proper ring sealing against the cylinder walls upon start-up, as well as for the break-in period once the engine is up and running. Most off-the-shelf engine oils do not have the necessary ZDDP additives to allow for proper break-in of a new engine, and we want to take every precaution possible to ensure that your new TSP engine receives a proper break-in!