The compression is low (ish).I would have given it more if it had been for me or for a race car. This about right for the camshaft that Renifer is using. I have built road engines with 11:1 but with much bigger camshafts.
As to Scat lifters, I know that they have had a bad rep, but I have not lost any yet. A close friend of mine tried many different types of follower in his engine (about 6 in total and they all died). They were Scat, CB, standard, some exotic German ones etc. I feel that you should use a camshaft and lifters from the same manufacturer with the only exception being ceramic.
As to Scat lifters, I know that they have had a bad rep, but I have not lost any yet. A close friend of mine tried many different types of follower in his engine (about 6 in total and they all died). They were Scat, CB, standard, some exotic German ones etc. I feel that you should use a camshaft and lifters from the same manufacturer with the only exception being ceramic.

