100# valve springs worth it or risky?

[turbojd]

Christian, I've had the LT1 springs on my GN for about 11-12 years now, I put those springs on when I had to pull the heads for a blown headgasket. Nothing about the cost, I just thought they seemed to be the spring to use back then, when Kirbans started selling them. Did the springs and had some porting on the heads while they were off. I've had no issues with these springs (LT1) but I'm sure others will say different, lot of opinions here on spring pressure.

 

[SCOOBY DOO]

Kirbans or Comp 980's will do just fine.

 

[christians87]

Thanks for the info, ill probly be replaceing mine the next time the valve covers come off.

 

[powerwagon05]

do you guys recommend using zddp in a stock gn running sunoco 94 oct. ?

 

[turbojd]

What type of oil do you use? Most oils today for a flat tappet cam could benefit from zddp additive.

 

[powerwagon05]

just castrol 10/30