The following thread should explain how we set up the Toyota 1GR-FE Timing Chain marks after re-installing the heads or performing engine work.
The first tip is that we know which Bank is #1 and which Bank is #2. Here is a reference...

There are three timing chains on these 1GR-FE engines. The first two are for the exhaust/intake camshaft timing. The last chain is the main cam/crank timing chain and is set up much like a timing belt.
Lets look at bank 1 Cam to Cam chain and look at the marks. This view would be from the back side of the gears.

Here's a look at the marks installed on the engine...





Did you notice the "extra" notch in the picture above? *(Just to the right on the yelllow arrows) This notch is used for the main cam/crank timing chain. Here is a pic showing them lined up...

The Bank 2 side doesn't have this extra mark and is lined up as usual...


Now when setting up the main cam/crank timing chain, this is what it will look like...
Bank 1


Bank 2


and the Crank Gear Marks....
