Stock, LS1, LS6 spring info

[SappySE107]

Used stock and used LS1 though by used, im not talking very long. Still, its used. LS6 is the yellow spring, new. I didnt measure the coil bind myself so all I can say is that I told him coil bind, and he clamped it down and measured it. I have the wire thickness numbers as well.

Lorenzo is running down to 1.164 on his green ls6 spring, so either the green spring coil binds lower, he is damaging his valvetrain severely, or coil bind at the shop was measured to where he felt was the safest you could go. BUt I didnt test a green spring so its hard to say.

[RacerX11]

Were the springs tested new or used? What part number LS6 spring did you test? There have been three different versions ('01, P/N 12565117, '02+, P/N 12565313, and the LS2, P/N 12586484, which service replaces the '02+LS6 part). The '01 is not supposed to be as stiff as the other two.

How did you measure coil bind? On the beehive springs, they are designed to run into partial bind, since the cools bind progressively, starting at the top. True coil bind is when all the coils are stacked solid. This is different from a straight spring, where bind height occurs when any two coils touch. The numbers you show for the LS6 seems off, since with an installed height of 1.8", and bind height of 1.269, this only gives you 0.531" of lift before bind. The '01 LS6 ran 0.525" valve lift stock, and the '02+ was 0.551".

Marty

good info. Thanks for sharing.

[SappySE107]

I had them tested at the machine shop

[geoffinbc]

Ahhh you did some math on the LS springs. But what did you use for a spring rate since they are a variable rate?

[SappySE107]

Stock
1.7" 78#
1.3" 157#
Coil Bind 1.230

LS1
1.7" 106#
1.3" 177#
Coil Bind 1.290

LS6
1.7" 121#
1.3" 203#
Coil Bind 1.269

Coil binds aren't true coil bind but rather the max measurement my machinist felt was safe. LS6 went to 1.168 or so (memory).