Ask about PAC 1226 springs. I suspect they might be a great fit for your cam.They are 275 @ 2.00, so with your cam they can be set at about 300 on the seat and be at about 1.950 installed height. They are a 1.625 double spring. This is the last place you want to try and save $$, it can cause you a lot of lost power and broken parts.
PAC-1226 is a 1.55" diameter spring, but is 275 seat as mentioned.
I'm running basically the same spring, the PAC-1326 which is a PAC-1226 that has been prepped for "enhanced durability", but my cam is only mid 270's duration and 0.726" lift.
