I have looked around at several differant valve springs and came up with a little list to make it earier to compair springs however, I have a few springs that I couldn't find specs for such as the 01 LS6 springs that come with the Hot Cam kit. So if you guys would help me fill in the blanks that would be great! Also I would like to kick search in the ***** because it works about 1 out of 20 times!!!!
Spring Install Open Max lift
01 LS6 (12565117) .550" CB ?
02-03 LS6 (12586484) .570” CB ?
04 LS6 Springs (book) 90#@1.800 280#@1.250 .570” CB ?
(12499224)(web) 120#@1.800 325#@1.250 .550” CB ?
Scoggin Dickey had two different listings for the 04 springs I believe the second set is correct
Comp 915 105#@1.800 277#@1.250 .600” CB 1.085"
Comp 918 130#@1.800 302#@1.250 .600” CB 1.085"
Comp 921 Dual 135#@1.770 400#@1.120 .625” CB 1.040"
Crane Dual 112#@1.800 352#@ 1.250 .650” CB 1.045"
SDPC Single 120#@1.770 320#@1.250 .600” CB 1.100"
SDPC Dual 135#@1.800 350#@1.250 .650” CB 1.100"
Howards Beehive 72#@1.800 214#@1.200 .600" CB 1.150"
Howards Dual 135#@1.800 355#@1.150 .650" CB 1.100"
Patriot Perf Gold 140#@1.800 385#@1.150 .650" CB ?
Patriot Perf Extreme 155#@1.800 410#@1.140 .650" CB?
PRC ? ? .660"

I know that there are some popular springs that I'm missing but I couldn't find info so let me know what the numbers are and I'll add them

 

The specs you are showing for our dual springs are for the original Gold springs. Our Xtreme springs have 155@ 1.800" and 410 @ 1.140". Also the 385 on the Patriot Golds is at 1.150" not 1.200".

 

Thanks Gunnar

 

I believe the part number for the
02-03 LS6 and the
04 LS6 Springs
are the same springs. The 12499224 number is for a set of 16 which is much cheaper than buying them individually with the 12586484 number.

 

LS6 Springs (blueprint) 12586484
89.9+-4.5#@1.800 or 400 +-20 N
294.5 +-13#@1.250 or 1310 +-59
Max lift .551”
CB = 1.19 - solid height