Is the front of the cam already machined for the opti and have the correct pin or do i need to do some modifying???Another question what springs are you guys running??I already have comp 987-16 figuring if i need to do a spring swap as well.Thanks for any info you can see in my sig what i hit with a CC503 this car wont be my DD anymore so im trying to hit the 400+ RWHP mark

Or maybe Bret Bauer will chime in and direct me with a custom cam

 

My 847 came ready for the LT1, with instructions for other apps included.

 

My cam came with the new vented opti style driven pin. You can either either specify to who you are purchasing from you dont want the new style if that is not what you need, or you can purchase the new style pin in the front and use a dremel to cut it to length.

 

for springs im running k-motion k-800's

 

Will do, thats the sprong I'm running as well.