ok i have a new set of double springs and i was curious would it be better to go with 918 springs instead of double springs cuz the 588 lift isnt that high !

would the double springs will be a bad match for this cam ?

or ill still get the same hp/tq?

220/224 .566/.588 with a 114lsa

 

well i will tell you that double springs are the way to go. My friend who is a member here has the 228R and the 918 springs failed on him after a few thousand miles, around 2k i think. 2 springs broke, daily driving, and this was recently.

 

If you're worried about a Comp 918 failing, then use the PAC 1518 springs. They're only $130 from TSP, and have a lot better track record than 918's.

I would not run a double spring with that cam. It's not necessary, and the extra weight on the valvetrain can cost you some power. I've seen a 10rwhp loss with .570-585 lift cams going from a single to a heavy double spring.

If set up properly and a quality spring is used, single springs are sufficient on almost any cam until .600++ lift.

 

I had a 228/228 .580 .580 114 +2 cam in my old ws6 running on comp 918's and put over 55K miles on the setup using a single spring. I made well over 150+ track passes with this setup too spinning to 6800RPM.

 

the PAC 1518 springs would be a good solution to your problem. They can provide great reliability without the noise of the dual. They come in at $249.99 though...

 

I'm running the 918's right now and plan to change to dual springs soon.

 

918s will work great for this. Double springs are heavier and also not needed. They will be a mile away from coil bind.

I run 918s on my truck at .621lift and spin 7000RPM without a problem anytime I please. I also use 918s on alsmost everything I build.

 

thanks guys alot for the infos

 

Pac 1218s are similiar to the 918s, with a better reputation. $120 a set.

 

yeah, if you are concerned go with the 1218 PAC springs. 1518's are the one good for .650 lift, and are more pricey.

 

Im not a fan of 918s any more.
https://ls1tech.com/forums/generatio...l#post13804872

I measured spring pressure after the failure, and im down 100lbs at compressed height of 1.2"!!! I couldnt even reach 300lbs taking them to coil bind height (1.11") and they should be 348lbs at 1.2"! I dont know the mileage on the 918s.

 

+1 The Pac 1518's will do the trick.

 

double spring not needed