the heads i bought have the spring height at 1.90 with 120 lbs on the seat....cam needs 140ish on the seat...I was told by someone with a lot of knowledge that the springs on the heads were PAC 1903 which are the same springs I use on the eddy/Sm heads...I checked the specs on the springs and yes he was correct same spring at different installation height....so I shimmed them down to 1.800 installed height that the Eddy head uses.....
I'm probably going to have the pac 1903 Springs put on my speed Masters as well due to your suggestion.. my only problem is I dropped them off at the machine shop tomorrow will be 5 weeks ago... And that's when he said I'll call you next week LOL..
