all depends on this;
small duration+high lift=hell on small springs
large duration+high lift=not easy on small springs

and of course your driving habits, also beating on it before the engine is up to operating temp will decrease life since the springs are fairly brittle until they get hot.

I wouldnt worry about going 20K on a 580ish mid 220 duration cam, then replace them, its just good preventative maintenance since breaking one can cost 10xs more than replacing springs and 2 hours of your time.

 

That's one of the cams I was looking at. Is this too big for an lq4?

 

YES! He has over 11:1CR, 3800 stall, blah blah blah and he is having problems getting it to run how it "should" bigger is NOT always better. Look into something in the High 220s LOW 230s, ook what slowprocess ahs done on a small 224. Also depends on the size stall you are going to run and gear

 

224/224 .563 .563 112lsa

no beating on motor, until its up to temp lol

estimated life of 918's?

 

Like Quik said there are quite a few on tech with 40K on them, then again I have seen BRAND NEW springs break.

 

yea you need compression for a cam like this

 

yea im getting real close to it running where it has to be, another tune did wonders

 

Good deal, to my knowledge no one has done a max effort 6L build

 

cool, i think if i wasnt such a heavy RCSB and wasnt at a poor track i would be netting better times. but the times im turning are good for my track believe it or not

now im hoping to run a 13something on my 20s in future

 

put her on a diet and use a correction factor