Brand New GM PERFORMANCE PARTS LS2 Block

• This is not a take out, or a blem block. These are brand new from GM. While GM really did a great job on designing these engines, we found some room for improvment on the machining end of things.

K1 Technologies 4.000" 4340 Forged Stroker Crankshaft

• K1 material properties are closely monitored for optimum performance. Counterweight placements designed for improved crankshaft performance. .125" fillet radii. Nitrided for improved bearing life. Straight hole oiling system for better lubrication. Size tolerances held to +/- .0001".
• Upgrades to Compstar, Callies, and Lunati Crankshafts are available.

Premium Wiseco Forged Pistons and Rings

• Wiseco offers a very wide arrange of dish, flat top and dome pistons to fit your needs.
• Our standard Wiseco pistons and rings have been used in engines making in excess of 1200 HP!!

Eagle 4340 Forged H-Beam Connecting Rods

• Eagle "ESP" Connecting rods are forged from 4340 steel and utilize ARP 7/16" capscrew style bolts with alignment sleeves for a perfect fit. Sizing is done on the state of the art Sunnen Krossgrinding System. "ESP" connecting rods are the perfect choice for engines up to 700 HP.
• We also offer upgraded connecting rods from K1 Technologies, Callies Compstar, Lunati, Carrillo, Oliver, Crower, Howards, GRP and Dyers!!!

Speed Pro Main and Rod Bearings. Durabond Cam Bearings

• The materials in Speed-Pro bearings offer a variety of advantages, such as high durability, corrosion resistance, decreased rate of wear and increased fatigue strength. These advantages are all essential features for performance engines that need to withstand punishing racing conditions.
• We remove the factory two piece bearing and install Durabond one piece cam bearings. We also make sure the cam spins free. It is very common in these GM engines to have a tight or bound up camshaft. You can rest assured your cam will spin free when purchasing a WRE shortblock!

CNC Square Decked Block Surface

• WRE shortblocks are decked with an RA of ~12. Just to give an example on how smooth that is, glass is an RA of ~ 8 and Cometic asks for of an RA finish of no higher than 52!! We have found some of these blocks to be off as much as .016 on the head mating surface. This is brand new from the factory, these are production blocks. We expect them to have flaws. That is why we scrutonize and go through the extensive machining that we do.
• An example of how much a undecked block can affect perfrormance a block that has a deck that is off .016 can have 12.2 compression on one cylinder and on the cylinder next to it have 11.7.

Cylinders are CNC Bored and Honed To Size with a Torque Plate

• We utilize the top machinery in engine machining to ensure a proper bore size that is centered on your crankshaft. This allows for very accurate bore sizing down to the .001!.
• Our Sunnen CK-10 cylinder hone is at the top of its class. We use deck plate specially made for the LS series of engines to ensure 0 distortion in your engine.

Main Journals are Align Honed

• AS said before, these blocks are a great foundation that do need work. We have found that an align hone is not an option on ANY GM Performance Parts block. IT IS ABSOLUTLY ESSENTIAL!!!  This ensures bind free rotation of the crankshaft. This means better oil pressure, longer bearing life and even free horsepower!!
• Each Main Cap is individually checked and surfaced as needed to properly seat on the block. After that is complete the line hone is ran through the block with the mains bolted and torqued down to ensure a round Main Journal that is within specification.

Crankcase is CNC Stroker Clearanced

• Due to the size of most aftermarket rod bolts and fitment issues,we clearance each piston skirt where we have ever had a clearance issue. This eliminates someone in the engine after it is completly cleaned in the assembly room having to file or grind away to make a rod fit.

Block is Fully Detailed for Assembly

Before Detail    After Detail

• Each block has a good amount of casting flash in it. We go through and clean out all of that flashing and also eliminate the sharp parts of the block.

There are many more options available than the ones listed below. If there is something else you are looking for please let us know and we will do what we can to best suit your needs. We can also complete your shortblock into a complete engine using cylinder heads and valvetrain components from some of the top names in LS performance!