Stock vs. Mopar Perf. Valve Springs

Performance mods and Advanced Stroker discussion.
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CobraMarty
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Joined: December 3rd, 2011, 2:01 am
Vehicle Year: 1998
Vehicle Make: Jeep
Vehicle Model: Cherokee

Stock vs. Mopar Perf. Valve Springs

Post by CobraMarty »

What is the difference between the two? I have searched and I can't find the difference.

I have found:
Stock [email protected]" [email protected]"(.434"lift) and [email protected]"(.450"lift) 327lb/in But I also found
[email protected]" and [email protected]"
Mopar Perf [email protected]" and [email protected]"(.485"lift) 270lb/in 1.42"OD

Is this right?
1998 XJ 2D AW4 32"MTR 3.55 4.5"RC JCR Slider Magnaflow 150rwHP/174rwTQ=> Sprintex SC Gibson Header 6lb 120-140*IAT 211rwHP/274rwTQ WasherFluid Inj 70mmTB 7.5lb 100-120*IAT=>Now 12 pounds Boost=> +BV ported head
99 XJ M62 S/C
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