918 or double springs for 228r cam
08-25-2010, 01:42 AM
#1
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918 or double springs for 228r cam 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
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
08-25-2010, 08:56 AM
#3
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 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.
08-25-2010, 10:18 AM
#4
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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.
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08-25-2010, 07:17 PM
#7
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.
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.
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09-03-2010, 12:14 AM
#11
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.
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.
09-03-2010, 09:29 AM
#12
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 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.
