These springs are the only true drop-in performance springs for the 4.6L 4-valve engine.
•No added cost for special retainers, spring cups, or seals
•No machining necessary
•Designed to work with all factory hardware
•Give added spring pressure needed for most aftermarket camshafts
•Eliminate valve float to reduce the risk of any engine damage in high lift or RPM applications
Asking for $300 + shipping.
Also have the retainers that were installed with them that I can include in the deal.
I looked into these but bit the bullet and went with Manley since top builders use them. I couldn't justify spending what I did on my engine (built a bit better than most) and then using a set of springs I couldn't get specs for at the time and only going by what people post on the internet. Just to many people spitting up info they read on the net without enough hard testing to back it up.
The reason I pulled the Livernois springs were because of how aggressive I went with my custom bullet cams and also went with Ti retainers.
Question, are 2V retainers the same as 4V ones? There's no 4V retainer set on the Tooley site, but I was wondering do they just intend for you to buy 2 sets of the 2V ones then?