The timing belt I purchased had 3 marks "L-CAM" for left camshaft, "R-CAM" for right camshaft, and "C.R." for crankshaft. The right and left orientation is based on the driver's perspective (looking from inside the car towards the front), so left would be the driver-side and right would be the passenger-side. The arrows are pointing towards the front of the car.

Please take a look at Post #72 of the link below...
https://www.clublexus.com/forums/ls-...t-ls430-5.html

 

Well, I've always put those marks toward the front of the engine, so I could see the marks as I'm installing the belt. However, the belt is consistent in it's groove depth/width all the way around, so that really shouldn't make a difference.

 

Many thanks to all. I will resume work on it November 29 and will post my progress.
Larry