Supercharged111
Truly Awesome
- Joined
- Aug 20, 2015
- Messages
- 12,864
- Reaction score
- 15,787
By the standards I'm accustomed to, the stock L31 springs are inadequate for an L31, so there surely inadequate for a warmer version of the same motor, and I'm not calling you Shirley. When you have to warranty a motor for however many miles, you look at a slight performance drop for valvetrain longevity as an advantage, not a disadvantage. I'll take GM engineering's stance on a lot of things, but not this, or the gov-bomb, or the 4L60E. I don't care which springs GM put in which motor. I'm concerned with open/close pressures, rates, and valve control, with anything "LS" out of the considerations.
I won't argue there, my main concern was coil bind on the stockers. All I had to do for clearance on the seals was put the new ones all the way down.