While these were virtually new Webcam sticks (previously test fit with blackening not even worn off the backside of the cam lobes) I did not receive a timing card with them and Webb would not give me any info when I called. My research showed they should likely be in the 3.45mm area optimally (
https://forums.pelicanparts.com/911-engine-rebuilding-forum/904629-timing-cams-custom-lobe-center.html), but these will not come close to clearing the pistons at that setting. Testing got me down to the 2.77mm range for best valve clearance (1.25mm intake and 1.75mm exhaust). So really no wiggle room for adjusting the timing outside that range while running stock pistons.
This more retarded cam timing (versus optimal) was a little concerning to me, but it is 0.7mm more retarded than “optimal”, and people commonly retime stock 964 cams by almost that much (1.8mm vs 1.26). The retarded setting is also biased towards top end, which is why I’m swapping to these cams anyways. So I said let’s try it and see what it feels like.