LS Engine Reconditioning
You can order online where available, and for major parts, packages or workshop services, we recommend contacting Oztrack first to confirm suitability and any vehicle-specific requirements.
Original price was: $10,500.00.$9,900.00Current price is: $9,900.00.
Rebuilt and machined in Penrith, Sydney
Complete LS Engine Rebuild and Reconditioning
Oztrack rebuilds LS1, LS2, L76, L77, L98 and LS3 engines in-house using CNC machining, precision measuring and LS-specific engine building experience.
The complete vehicle-based rebuild starts at $9,900. Use the options above to add cylinder-head upgrades, camshaft upgrades, sleeving, intake parts, valvetrain components and dyno run-in.
What the LS Engine Rebuild Includes
The base package is designed to restore the engine properly rather than simply replace the failed component.
- Engine removal and installation
- Complete strip and inspection
- Engine component cleaning
- CNC cylinder boring where required
- CNC block surfacing
- Sunnen precision honing
- New pistons and piston rings
- New main, rod and cam bearings
- LS7 lifters and lifter trays
- Chromoly pushrods
- Performance single valve springs
- Standard LS3-style camshaft where suitable
- Upgraded GM oil pump
- Rollmaster IWIS timing chain and dampener
- Complete gasket set
- GM head bolts and balancer bolt
- GM rear main plate and seal
- Fresh oil, filter and coolant
- Custom ECU calibration
- Run-in instructions
Parts can vary with engine model, engine condition and selected options.
The original cylinder heads are cleaned in the base package, but they are not fully reconditioned unless you select one of the CNC cylinder-head options.
LS1, LS2, L76, L77, L98, LS3 and LSA Rebuilds
We rebuild 5.7L, 6.0L and 6.2L LS engines for Holden, HSV and conversion applications. The final machining and parts combination depends on bore condition, cylinder-head condition, kilometres, previous damage and how you intend to use the vehicle.
Dropped Intake Valve Seat
One problem we see in higher-kilometre 6.0L and 6.2L LS engines is a dropped intake valve seat.
The original valve seat is pressed into the aluminium cylinder head. Repeated heat cycles, high kilometres or overheating can allow the seat to loosen.
If it moves far enough, the valve can remain open and be struck by the piston. Damage can extend to the valve, piston, cylinder head, connecting rod and engine block.
For higher-kilometre 6.0L and 6.2L engines, especially engines with an overheating history, we recommend CNC ported cylinder heads with new ductile-iron intake valve seats.
Cylinder Head Upgrade Options
CNC Ported 6.0L / 6.2L Heads
CNC ported rectangular-port cylinder heads with new ductile-iron intake valve seats. Exchange pricing assumes your original heads are suitable cores. Without suitable cores, the price is $3,000.
CNC Ported LS1 5.7L Heads
CNC ported exchange cylinder heads for LS1 5.7L combinations. Without suitable cores, the price is $3,000.
Performance Camshaft Upgrade
Upgrade from the standard cam package to a performance camshaft with dual valve springs while the engine is already apart.
We can choose the camshaft around engine size, cylinder heads, gearbox, converter, exhaust, intake, driving style and power target.
Sleeving with Melling Sleeves
Some LS blocks cannot be safely rebored because of excessive cylinder wear, existing damage or factory core shift.
Core shift means the original cylinder is not perfectly centred in the block casting, which can leave insufficient cylinder-wall material for safe machining.
When required, we install Melling sleeves and machine the cylinders back to the required geometry.
Dyno Run-In, Oil Change and Dyno Tuning
We complete the initial engine run-in on our Mainline ProHub dyno under controlled load.
We monitor the engine during bedding-in, replace the run-in oil and filter, then complete the final custom dyno calibration.
The vehicle is then ready to drive without you needing to perform the initial run-in procedure yourself.
Optional Components
L76 and L77 Valley Plate
The replacement valley plate is required when rebuilding an L76 or L77 engine. Make sure this option is selected in the product options above.
Precision LS Engine Machining
Critical LS engine machining is completed in our Penrith workshop. This allows us to measure the engine first, determine exactly what machining is required, and control the clearances throughout the rebuild.
Comec CNC Machining
Our Comec CNC equipment allows accurate machining of LS engine blocks and components in-house rather than sending critical machining work elsewhere.
Precision Bore Measuring and Honing
Cylinder bores are measured throughout the machining process so the final bore size and piston clearance can be matched to the engine combination. Final cylinder preparation is completed using our Sunnen honing equipment.
Bore condition, wear, previous damage and core shift determine whether an LS block needs honing, boring or sleeving. We inspect and measure the block before making that decision.
Paul’s VF Clubsport R8 — Dropped Valve Seat to 382rwkw
Paul’s VF Clubsport R8 came to Oztrack after its LS3 suffered a dropped valve seat. Once we stripped and measured the engine, we found further problems that meant this wasn’t going to be a simple cylinder-head repair.
Why Paul’s LS3 Needed Rebuilding
The LS3 originally came in with a dropped valve seat. The damaged cylinder heads required replacement, so we fitted heads with new ductile-iron intake valve seats to address the known factory intake-seat issue.
Once we stripped and accurately measured the LS3 block, we found significant core shift. The cylinders could not safely be bored even 0.010 inch oversize.
Rather than remove material from an already thin section of cylinder wall, the block was sleeved before being machined and rebuilt.
We also discovered damage to one of the lifter bores. That lifter bore was sleeved as part of the repair before final engine assembly.
Paul’s LS3 Build Specification
- Sleeved LS3 block
- Oztrack LS3 engine rebuild
- Oztrack HP3 camshaft
- CNC ported cylinder heads
- New ductile-iron intake valve seats
- Sleeved damaged lifter bore
- CHE rocker bush / trunnion kit
- 25% underdrive balancer kit
- VCM OTR intake
- DPE 1 7/8-inch 4-into-1 headers
- DPE 3-inch cat-back exhaust
- 6-speed automatic transmission
The finished combination produced 381.6rwkW and 607.8Nm. More importantly, the dropped valve seat, cylinder-wall core shift and damaged lifter bore were all addressed properly during the rebuild rather than simply replacing the originally failed components.
How the LS Engine Rebuild Works
We inspect the engine and identify the likely cause of failure before the rebuild begins.
The engine is stripped and the block, crankshaft, bores, pistons and cylinder heads are measured.
Required machining is completed in-house, including CNC boring, block surfacing, honing, sleeving and cylinder-head work where required.
The engine is assembled using the required replacement parts and selected performance upgrades.
For complete vehicle jobs, the rebuilt engine is installed back into the vehicle.
We complete the ECU calibration and, when selected, the ProHub dyno run-in, oil change and final dyno tune.
Why Choose Oztrack for an LS Engine Rebuild?
Oztrack combines engine machining, engine assembly, vehicle installation and tuning in one Penrith workshop.
Keeping the machining and tuning together means the whole engine combination can be considered rather than treating machining, assembly and calibration as unrelated jobs.
Our large database of LS dyno results gives us real-world data from hundreds of combinations we have built and tuned
Engine-Only Rebuilds Australia-Wide
You do not need to send the complete vehicle.
Engines can be delivered or freighted to our Penrith workshop from anywhere in Australia.
If the engine is supplied already removed, the standard rebuild price is reduced by $2,500.
LS Engine Rebuild Questions
How much does an LS engine rebuild cost?
The standard vehicle-based Oztrack LS engine rebuild starts at $9,900. Optional upgrades can be selected at the top of this page.
Can I supply just the engine?
Yes. Supplying the engine already removed reduces the price by $2,500.
Which LS engines do you rebuild?
We rebuild LS1, LS2, L76, L77, L98 and LS3 engines.
Can I send an engine from interstate?
Yes. Engines can be freighted to Oztrack in Penrith from anywhere in Australia.
Are the cylinder heads rebuilt in the base package?
The original heads are cleaned, but they are not fully reconditioned unless a CNC cylinder-head option is selected.
Can you fit a performance camshaft during the rebuild?
Yes. The performance cam and dual valve-spring upgrade is $650.
How long does a standard rebuild take?
Most standard engine-only rebuilds are completed in about three weeks once the engine is at the workshop. Complete vehicle bookings can take longer depending on workshop availability.
Discuss Your LS Engine Rebuild
Tell us your vehicle, engine type, kilometres, current problem and intended use. We can help you choose the right rebuild and upgrade options before ordering.
Calculate Your Upgrade Budget
Planning to enhance your vehicle’s performance with Oztrack? Use our Loan Calculator to estimate your upgrade budget. Discover convenient financing options through our partner, Verified Lending, and bring your dream upgrades to life. Start calculating today!
