Just bought a cam from a forum member that has a lift of 588/595 and was looking at the PAC 1904 springs. They are 130$ for a dual spring set. That's so cheap I'm hesitant to buy them. Anyone have experience with them? Will they hold up on that cam? Going on a stock 853 head motor.

 

That's just for the springs and not a kit? Because those springs will need their own retainers, locators and seals.

We have a kit with steel retainers for $229 shipped, they seem to be fine springs and we've had zero issues with them.

http://www.briantooleyracing.com/650-lift-pac-1904-spring-kit-with-steel-retainers.html