whitedevilWS6

iTrader: (10)

Ok I just picked up an '05 V and I'm wondering how much vibration y'all experienced after camming yours. It's getting the motor from my Trans Am, but I'm wondering if it might make it shake too much for my liking. The cam in question is a Comp XR281HR. The skinny on that is 228/230 ~.570 112, and the motor will be high compression. With my polyurethane mounts in the Trans Am, it shakes a bit. I'm sure a more violent cam would be much more so, but I want the Caddy to retain as much of it's original smoothness as possible. While I know it won't be as smooth as a Northstar, it'd still be nice to not have a Cadillac that feels like a damn race car. I will get a custom cam if I have to. What have your experiences been, and what advice can you offer on this subject?

Also, the motor made 446/426 to the wheels, I wouldn't mind losing a few for the sake of smoothness.

Thanks

CTSVBiggie

iTrader: (1)

I have a 226/230 598 608 113+2. And not too much shaking. and mostly when just sitting there idling itll get a little shake to it. Nothing too serious.

RADEoN

iTrader: (12)

the focus mounts are much more designed to eliminate vibration and engine feedback than a more aggressive mount, like your UMI's, which vibrate like bitches. I think with a stock mount, you'll be in good shape, but you'll be replacing them more often. Much more often.

whitedevilWS6

iTrader: (10)

Yeah I thought about using stock mounts. I don't suppose it could hurt too much. Don't know anything about Focus mounts. I'll have to look into that. Any estimates on stock mount life expectancy with an aggressive motor? Versus the aftermarket?

RADEoN

iTrader: (12)

Focus Mount is the stock CTS-V mount.

http://www.cadillacfaq.com/faq/answers/diff.html

I've heard of people heat wrapping them, and that saves some life, but the aftermarkets typically last a lot longer, but at the cost of some comfort.

CTSVBiggie

iTrader: (1)

I have stock mounts and with no issues. Granted I drive like a little old lady...

whitedevilWS6

iTrader: (10)

I'm beginning to like the idea of a custom cam. And I think I may chance it with stockers (brand new ones, might as well.) I can afford maybe 20rwhp before I wish I had just Maggie'd it.

CTSVBiggie

iTrader: (1)

Just maggie it. Cam and headers and wheels and I woulda been well into a maggie kit. And while I love my car... it needs BOOST

whitedevilWS6

iTrader: (10)

I just don't know if I can bring myself to spend over 6 grand on a (IMHO) junk Eaton supercharger. One thing that nearly turned me off to these things were the limits on modding.

CTSVBiggie

iTrader: (1)

The limits are your pockets. If you have the funds. A Heads cam CTSV w CS 8.8 rear kit... would be an amazing car to daily.

DACTARI

iTrader: (1)

Keep in mind that with the UMI mounts you will be using the whole car to dampen the shaking that comes with a high overlap cam. However, softer mounts will lead to an engine that shakes like crazy in the bay and will transmit that shake into the car.

itsslow98

iTrader: (18)

I ran stock mounts and never had an issue. It did have a little shake at idle but nothing bad by any means. people knock the stock motor mounts so fast but i never had an issue.

DMM

I am of the very same opinion. I have the solid Poly mounts and a stock cam at the moment and the vibes, although infrequent, drive me insane! Here is how I am trying to mitigate this:
https://ls1tech.com/forums/cadillac-...unts-v1-2.html

Oh, and screw a Maggie...hopefully the E Force should be available soon, and I think there may be a group buy in the near future:
https://ls1tech.com/forums/cadillac-...ery-today.html

CTSVBiggie

iTrader: (1)

Eforce is nice? Im open to options if my car doesnt sell.

whitedevilWS6

iTrader: (10)

I was under the impression that E-Force was just another Roots-type blower. I would only do that if it was cheap enough to be worth it.

Oh, and after taking the car for a drive today, I've decided that a smooth(ish) custom cam is a must. The plus side is that it will probably be very boost-friendly, so all I'll have to do is swap out the milled heads and I'll be ready to go!

whitedevilWS6

iTrader: (10)

I wonder if a low compression 5.3 with a blower would be a good street setup. Probably great on gas and people go fast with boost on them.

DMM

The E Force uses the 2300 TVS rotors (4 lobe, 160* twist) which is the same as in the current ZR-1. The 2009+ CTS-V uses the smaller, 1900 TVS rotors, and you can see how well they have been fairing.

I would not discount a roots type blower, esp. if you are looking for a street friendly setup.

MacLEAN

iTrader: (1)

My '04 V just blew the driver's side mount at 36K FWIW. Even stock the car will kick around a bit at an idle (which I kind of like).