Factory chains more so in high km engine are known to stretch. While easy and convenient, reusing the factory chain can be down fall of your new camshaft install.
VCM 2 WITH TRIGGER INSTALL
Cam Gear, Single Row or Double Row!įor simplicity of install the Cam gear is a very popular option, as all that is required is to bolt it up to the new camshaft reusing the original timing chain and away you go – no need to drop the sump and remove the oil pump. With this determined the style of kit can be decided on. The half-moon essentially looks like a half moon, it’s an on-off style trigger, with the 4-Point having 4 raised sections 1 small, 2 large, 1 small consecutively. They can be easily identified by looking at the front of the sprocket and noting what the raised trigger sections resemble. The cam triggers are referred to as “Half Moon” which suits 24x crank reluctor wheels found in VZ HSV LS2’s (also LS1’s but cam sensor position is in the block) and “4 Point” which suit 58x crank reluctor wheels found in all VE-VF engines including VE HSV LS2. This second point is an important one, there is 2 types of cam triggers and they directly relate to the reluctor wheel on the crank and the type of ECU, mixing these will cause issues with the engine starting. Secondly on GENIV motors, it allows a camshaft sensor to read the camshafts position and sends this information back to the ECU so it can correlate it to the crankshafts rotation. Its purpose is really quite simple Firstly – Allows a chain to be fitted to time the camshaft to the rotation of the crank so as all the valve train can operate at the time needed for the engine to run, perform and not foul pistons and valves. There a few different kits available to get this done, and a couple different variations of them as well.
VCM 2 WITH TRIGGER UPGRADE
So the need to upgrade the cam sprocket is a necessity.
VCM Performance’s range of Camshaft are all made with a 3 bolt pattern on the front, this in most LS engines isn’t compatible with the factory single bolt style. Upgrading the camshaft in your LS will have a domino effect on a few things that will require you to replace/upgrade some other related components so everything works as it should and reliably!