What are the pros & cons of VVT
Thread Starter
Teching In
Joined: Mar 2013
Posts: 32
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From: Bullhead City AZ
What are the pros & cons of VVT I posted this in another section of this forum and got no response I am trying to figure out if I should keep the VVT or get rid of it I plan on changing the cam in my LY6 so that would be the time to change it one way or another the motor will be going into a 63 Nova not a daily driver but a good running 400 to 500 horse car to drive on the weekend please help I'm new to this so I will be asking a lot of questions on here this is a great sight lots of info I have searched for this answer with no luck
VVt is great in milder combos, like your goal. It is basically a variable cam sizing, based on rpm. Little cam down low and bigger at higher rpm. Broader torque and HP curves. Whats not to like?
It really retards and advances the cam, which is KINDA like small cam, big cam. Thought I better throw that in there before someone blew me out on it.LOL
It really retards and advances the cam, which is KINDA like small cam, big cam. Thought I better throw that in there before someone blew me out on it.LOL
If you go with a VVT cam, I'd strongly recommend doing some serious research to ensure you get the correct parts. There are two different cam cores and phasers since 2007. Mixing up the cores and phasers could change cam timing as much as 13 degrees!
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Building a 2008 LY6 street/strip engine also. I am using the Texas Speed VVT 3 cam.
Texas Speed also emailed me the updated phaser tables which I am going to install with my HP Tuners programmer.
Mike
Texas Speed also emailed me the updated phaser tables which I am going to install with my HP Tuners programmer.
Mike
If you look on your phaser gear, the last three digits of the part number are cast into it. This will tell you what cam core you need as well as what limiter kit. Below is a link to Comp Cams' tech bulletin describing the required part numbers.
http://www.compcams.com/Base/pdf/156...189%20core.pdf
TECH Fanatic
Joined: Jul 2006
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From: K.C.
for reference on finding the right cam core to go with your phaser.
http://www.performancetrucks.net/for...m-swap-504902/
http://www.performancetrucks.net/for...m-swap-504902/
TECH Junkie
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Teching In
Joined: Sep 2012
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VVT itself is awesome. basically it broadens the power curve giving you a little more grunt down low and a little more top end than you would have with the same cam on a fixed timing set.
TSP told me that I should delete VVT when i told them I wanted to build a crazy stroked/blown/everything motor so i went with a 3 bolt cam.
On a milder build I would keep VVT.
I think it boils down to reliability and ease of tuning. VVT cam phaser is another moving part. VVT also may make it a bit more complicated to tune.
TSP told me that I should delete VVT when i told them I wanted to build a crazy stroked/blown/everything motor so i went with a 3 bolt cam.
On a milder build I would keep VVT.
I think it boils down to reliability and ease of tuning. VVT cam phaser is another moving part. VVT also may make it a bit more complicated to tune.
