Hey guys , I know its gonna be run it and see to get it where it wants, but looking for a nice starting point. Last year it was a 526 (4.375x4.375) brad 5 head motor. Compression was around 11 / 11.5 to 1. Not sure exactly though. It was driven 32 over and made 40 lbs of boost once in the best air of the year. it was usually 38 lbs. This year the combo is mostly new (it's the same blower, hat, fuel system etc. But now it's 532 (4.4675x 4.25) with brad 8x heads. Compression is close to 12.1 and it will be spun at the same 32 over. The guy I bought the 5 headed motor had the timing at 24-25 and I ran it like that all year. Just wondering does this diff head require a much diff timing set up? Not brand new to the hemi stuff but new enough not to know the ins and outs yet but trying to get there lol. If more motor is needed just let me know what you would like to know. What is max timing guys run is stuff like this when they "go fast". Also looking for something a step or so safe from that. But it would be nice to know the people who know opinions.