So I reached out to a few people to try and get information but I've not had a lot of luck ... from what I understand super tech makes and B series 85 lb valve spring and a drag only valve spring I've heard that with the drag only valve spring there can be no street driving and it is strictly for the track is this true? My set will be around 800-900hp mainly tracked but with some weekend driving ... any help will be appreciated thanks

 

which head is being used? What cams? We need a lot more info

 

B16 head ctr cams... what info you got for me?

 

From what I understand, the reason the track springs (100lbs) are track only is because the durability is limited to so many hours of use. I can tell you from experience that springs have a lifespan. Not just in the fact that they lose pressure, but eventually will break. More so with higher lift cams. Also, I think they aren't meant for a lot of low idle.
I made 800hp on the 85lbs springs. My opinion is you would be fine with those.
You might want to call supertech and get more advise on those springs and how many hours of use.

 

Thanks for your reply bro, I have spoke to supertech and they had me send a email to their engineering department.. I'm still waiting for a reply but when I get one I will post the info I receive for future reference