Friggy

iTrader: (1)

I am degreeing my cam and had a question on whether or not I should retard my cam or install straight up. Right now I have it degreed straight up and it is spot on what the cam card says. The only reason I'm asking is because I just ordered an S60 with 4.10 gears and was curious if I should shift the power a little more to the top due to the gearing? Just curious on what effects this might have on my setup and is it worth it. I know there is probably not one great answer, but any help would be appreciated?

Here's what I have:

LS1/T56, Stock 346 bottom end, 243 heads(hand ported), 230/238 - 600/603 112+3 cam, LS6 intake, long tube headers.

KCS

iTrader: (20)

Have you checked PTV? If you're tight on the exhaust, you may not really even have room to retard the cam.

Friggy

iTrader: (1)

No haven't checked PTV. We thought about that last night. I guess I should throw a head on and check it.

But, assuming I have good PTV, is retarding the cam say 4* going to make a big enough difference to notice. I really don't know what effects each degree of retarding the cam has on the power and at what RPM range would it take effect.

FEAR LS

iTrader: (8)

I wouldn't retard the cam if PTV clearance is good. You will love that combo! The six speed makes up for a lot of that gearing.

KCS

iTrader: (20)

It'll soften up the low end power and add more up top. I had my cam with a 235 intake duration on a 109ICL in my LS1, which will be similar as far as the IVC goes to what you're doing, and it did seem a little soft at lower RPM, but it was still fun. If it's going to see a lot of street miles, I'd leave it alone. Low RPM power in my opinion, is what makes a street car fun to drive.

Friggy

iTrader: (1)

Yes, it is going to see mostly street miles. The only reason I was considering retarding it was due to the 4.10 gears. I was thinking I could afford to lose a little off the bottom with those gears, and shift the power a little higher up in the RPM range. I'll probably just end up leaving it. We're only talking a few degrees anyhow, and was just curious how big of a difference it would make and if it would be very noticeable.

Thanks for the input!

HCI2000SS

iTrader: (2)

Right now you're a 109 ICL, and with a mid 230's duration...that's a good combo IMO! My worry would be if you retard it, it will be too much of a dog with that much duration

Sales@Tick

iTrader: (3)

I would ask the person who spec'd your camshaft.

That cam IMO will pull fine to 6500-6700rpm.

Kip Fabre

(Should I "Retard" my cam...?)
NO. I am sure there is a cam running RETARDED in the engine that runs good but I have seen it. They all seem to run better a little on the + side.

Friggy

iTrader: (1)

I don't know who spec'd it, but could probably find out if I really needed to.

But thanks for the advice guys. I think I will just leave it straight up. It does have advance built in, and I don't want to end up with unused power above my target RPM range. I also don't want to end up regretting it if I retard it, and from the opinions it sounds like leaving it is the best situation.

Thanks

PREDATOR-Z

Try factory ls6, they are 118 lsa on a 120 icl