Checked your timing gear?

and a 360 being harder on a chain than a 318, would be impossible, there is no difference on cam gear.......

The 360 is likely to be running more torque though the chain though, yes?

Thats not a big deal though - I am interested in the respective experiences in different brands.

As R/Fish says - seems they all stretch and 100K miles will see even the good ones "run out"

Mainly wondering of there's a huge difference between a Cloyes and a Rollmaster etc?