Since we have been doing more and more Holden upgrades we have found plenty of people who are getting confused by the terminology and jargon associated with the different Holden engines available. Most enthusiasts don’t know an LS2 from an L98 and all they want to know is that they have enough power to waste the Ford in the other lane. Here is STM’s beginners guide to what’s what in the world of Holden engines.
What the hell is an LS?
From 2001 Holden adopted the LS range of engines from their big brother General Motors. The LS is the only V8 engine used in GM’s RWD cars and trucks and is produced in a wide variety of specs. The LS engine developed from the famous ‘Small Block Chev’ although it doesn’t share any parts compatibility. Physically these engines are very compact and with an all-alloy construction they are also light.
With a good mix of strength and reliability coupled with a huge selection of aftermarket parts, the LS engines have become a very popular base for modification.
5.7 Litre LS1 Holden Engine – VT-VZ Holden/HSV
The LS1 displaces 5.7 litres and produces anywhere from 220 kW (VT Commodore SS), through to 285 kW (VYII HSV). A special Callaway modified version known as the C4B was produced in limited numbers for the HSV GTS and produced 300kW.
- With these cars dropping in price now, you are getting a lot of bang for your buck
- Expect an extra 50 kW from our Stage 2 upgrade with a MAFless tune
- Restrictive MAF sensor costs power in stock form
- Lacks torque and power compared to the LS2/L98/LS3
6.0 Litre LS2 Holden Engine – Late VZ and VE HSV
The LS2 takes capacity to 6.0 litres and is found in the last of the VZ (297 kW) and in the E Series (307 kW). With an increased capacity, the LS2 offers a tidy improvement in torque and power while also improving fuel economy.
- Great power increase for a modest outlay. Expect around 340 kW with our stage 2 upgrade
- Factory fitted headers are fine for moderate upgrades so save your money
- Uses ‘Cathedral Port’ cylinder heads which don’t flow as well as the L92 heads
6.0 Litre L98 Holden Engine – VE Commodore SS
The SS Commodore in the VE range inherited the L98 engine instead of the LS2. While the L98 is very similar to the LS2, it is fitted with better flowing L92 cylinder heads. The L98 is offered in a low state of tune, producing 270 kW, but with the right upgrades they offer better potential than the LS2.
- Add a cam with our Stage 3 Upgrade Package and you can expect over 400 kW
- Fitted with the superior L92 cylinder head
- Fitted with restrictive cast iron exhaust manifolds – These need to go
6.0 Litre L96 Holden Engine – VE Commodore SS with AFM
The L96 engine is found in the SS commodore running Active Fuel management (AFM). Essentially the engine is identical to the L98 with the exception of special lifters which allow the ECU to disable four cylinders at cruise. The L96 is rated at 260 kW, 10 kW less than the L98.
- Optimising the AFM with our Stage 0 Upgrade Package offers improved fuel economy and power
- Can sound horrible with an aftermarket exhaust system in AFM mode
- Requires substantial work to upgrade the camshaft
6.2 Litre LS3 Holden Engine – VE HSV (2008 onwards)
To step up the power and stay ahead of FPV, HSV moved to the LS3 6.2 litre engine to their E series in 2008 with the 317 kW (Clubsport) and 325 kW (GTS) options. We found the LS3 uses a nasty torque management system to close the throttle and restrict power – Fortunately we can disable this feature.
- Disabling the factory torque management with our Stage 0 Upgrade gains over 40 kW in the midrange
- Uses the superior L92 cylinder head
- Severely de-tuned in stock form