Sales@Tick

iTrader: (3)

A larger cam would make it worse.

A larger cam will drop the dynamic compression due to a later IVC(intake valve close) event and bleed cylinder pressure off.

A smaller cam will close the Intake valve earlier thus trapping more cylinder pressure in the cylinder on the compression stroke therefore raising the dynamic compression.

People get too caught up in static numbers when it's just a measurement of volume not actual cylinder pressure like dynamic is.

JoshuaGrooms83

iTrader: (2)

yeah im thinking of keeping the cam size lower then what i was considering with 317 heads. still wondering about that new stage 1 turbo cam ya'll came out with. looks really interesting. that might be on my "to get" list when taxes come around

Sales@Tick

iTrader: (3)

Sounds like a plan! Soon as the weather warms up there will be results pouring in on the newer cams.

My1st4thgen

Id agree I wasn't sure about the LS9 cam until I seen the numbers I put down 532 at 7.5psi. I was very impressed how good that cam worked in my car

JoshuaGrooms83

iTrader: (2)

hows the low end on that cam? i knows its gonna be a bit differnt then my build since im rear mount and your a twin turbo but all things equal of course... Im trying to make a cam choice based on my turbo setup. since rear mounts pick up later in the power band, i want to make sure i get a cam that will make up some of that lag time before boost.

Sales@Tick

iTrader: (3)

If you haven't read Denmah's thread lately, he used to run a LS9 cam. He put an aftermarket cam he had lying around in his fairmont before he sold it and took the LS9 cam out.

He made the same power he did on 20psi with the LS9 cam at 11psi with the new aftermarket cam. The aftermarket cam was 224/226 114lsa I believe. Very impressive if you ask me. A stock cam is a restriction just like a smaller head is a restriction.

JoshuaGrooms83

iTrader: (2)

ah ok, good to know. yeah i was sourcing out how much it would cost to setup an ls1 to run an LS9 cam and although unless you need the new parts for some resaon or your restricted to stock GM parts for what ever racing your doing, its a bit pricey unless you find killer deals on them.
LS9 cam $90-150
LS2 timing cover $60-160 depending on gaskets and sensor setup
LS2 timing set $60-110
LS2 Crank sensor $10-20
LS1 to LS2 sensor harness extention $35

and that not including the usual like springs, stems, gaskets, etc...
unless i have that stuff layin around by chance, ill just get a good used or brand new aftermarket cam that is more suited to my build. but from what i hear it still is a good cam, but on us stock ls1s its a bit troublesome to start up.

so that tick cam, sounds like its the cam for me lol

Ryans99ls1

iTrader: (16)

Im running 317s, ls9 headgaskets and a 230/230 cam with xfi/xe-r lobes. car made 630/650 before the 317s and it runs just as hard if not harder now. Made that number @ 9-10psi with a tc78. we pulled a couple degrees of timing out so it left the shop around 600wheel but at 3600lbs it runs dead even 133-135mph cars so i know its not a happy dyno #. it shows no signs of valve float (comp 921 springs) but then again i only spin to 6000-6200

While the cam i have is farrrrrr from anything you should run in a turbo setup, its making great power and i think the fact that it bleeds off cylinder pressure (bringing the dynamic compression into the 7s) helps keep my stock bottom alive. that being said, id run a tick/custom turbo cam if i was to swap it out or building a motor

JoshuaGrooms83

iTrader: (2)

yeah im pretty much dead set on either the Speedinc TU1 or the TICK stage 1 turbo cam. just waiting on taxes and ill make a final decision

Sales@Tick

iTrader: (3)

Thanks for the compliment Ryan!

The guys at Speed Inc. are great guys also. Jim has always been nice to me and has always shared information with me freely. Nothing to sneeze at with that group, and they build some bad *** turbo cars!