TSP H-Beam Rod and JE LS3 No-Balance Piston Combo - No Balance w/ LS3 Crank

This rotating assembly combo combines Texas Speed Performance (TSP) Super H-Beam connecting rods with JE Performance pistons designed specifically for the GM LS3 platform. The JE pistons are for the LS3 and require no balancing when used with our TSP H-Beam Rods and stock GM LS3 crank. Rod bearings and a file-fit ringset are included, making this package a strong and reliable solution for high-performance LS3 builds.

Piston & Assembly Specs

Application: JE LS3 No-Balance Piston (designed for GM LS3)
Bore: 4.065"
Compression Height (CH): 1.300"
Stroke: 3.622"
Wrist Pin Diameter: .927"
Piston Top: Flat Top w/ Valve Reliefs
Included: Rod Bearings and File-Fit Ringset

Technical Details

Rod Material: Heat-treated & stress-relieved 4340 steel
Rod Type: TSP Super H-Beam
Rod Bolts: ARP L19 rod bolts included for maximum clamping force
Manufacturing Process: Each rod is torqued and rough-honed, then disassembled to relieve residual stress, and finally reassembled and re-torqued for precision final honing — ensuring true roundness at installation
Power Rating: Super H-Beam rods rated for builds up to ~900 flywheel HP (engine & build dependent)
Balance Requirement: No balancing required when JE LS3 pistons are used with TSP H-Beam rods and a stock GM LS3 crank
Oil Squirter Note: Blocks with piston oil squirters may require clearancing

Performance & Compatibility

Perfect for naturally aspirated or boosted LS3 builds, this combo provides the strength, precision, and durability required for high-performance applications. The flat top pistons with valve reliefs deliver excellent compatibility with a variety of cylinder head and camshaft combinations while maintaining durability under demanding conditions.

Important Installation Notes

Ring gaps, piston-to-wall clearances, and bearing clearances must be checked by the end user prior to final assembly to avoid engine damage.
Verify piston-to-deck and piston-to-valve clearances with your specific head/gasket/rod combination.
Check for proper oil squirter clearance if applicable and modify as needed.
Follow ARP and TSP torque specs and use proper lubricants during assembly.