[bigwhitecobra]

No one makes one that I know of. I'm not sure that you would really want to do that it the first place. These motors turn really tight tolerances and I wouldn't want to risk slapping a valve. As long as the timing is set straight up everthing runs hunky dorey, but get into advancing and retarding the cam and things get a little hairy. I have pulled an engine or two out of cars that the oil pressure dropped, which in effect advanced the cam about 4 degrees and every valve in those cars hit the pistons. Of course those were Stage 2 cams, but the point still stands. Hope this helps out some.