Mast VVT HO or Comp XFI™, 267PHR14
#1
Mast VVT HO or Comp XFI™, 267PHR14
I have a LY6 with a LS3 intake the VVT is intact and I will be running a 72mm turbonetics turbo. What cam is the better choice, the MAST VVT HO cam or the Comp XFI 267PHR14? I have read about both but I was hoping someone out there would have some real world info.
#3
Staging Lane
Join Date: Apr 2008
Location: Savannah, GA
Posts: 63
Likes: 0
Received 0 Likes
on
0 Posts
I'm running the same exact motor without the turbo...I have the mast vvt ho cam and love it! Car sounds great and runs even better. No Dyno runs yet but it's making some crazy power for the street. Don't know how to shoot you my thread... Try searching 67 cutlass ly6 if you want to check it out. Good luck!
#4
I wonder how well this will work. I am curious to see if the valve springs can live with boost AND vvt
Trending Topics
#9
#10
I talked to the guys at mast at I was told that because Im using a turbo I should be using dual springs. I asked them about the compatibility between the dual springs and the VVT the guy said it was no problem and the springs they have with the kit will work just fine.
#11
ModSquad
iTrader: (6)
This is an ongoing topic that will iron itself out in due time. I will be ordering my Mast camshaft hopefully this week, and it comes with springs, but I am unsure if they are duals. Should be, for the price. Yikes!
#13
SO I talked to 3 different manufacturers today and got 3 different answers.
Texas speed said no problem for VVT + Turbo and proper functioning with Double springs
Mast said some problems but no guarantees with VVT and a turbo only beehives
Fastlane said it could go either way but no double springs
Im gonna call comp cams tomorrow and see what they say, I wish I could get a def answer from someone that has experience. So far Mast has the best price (with military discount) across the board.
Texas speed said no problem for VVT + Turbo and proper functioning with Double springs
Mast said some problems but no guarantees with VVT and a turbo only beehives
Fastlane said it could go either way but no double springs
Im gonna call comp cams tomorrow and see what they say, I wish I could get a def answer from someone that has experience. So far Mast has the best price (with military discount) across the board.
#14
ModSquad
iTrader: (6)
#16
Thats what I figure is gonna be the problem. I talked to more people today and I was told that the springs will be to stiff for the VVt to function properly. Its not lookin good for the VVT at this point. I would rather peace of mind then an extra 1 or 2 MPG.
#18
#20
Yes, and I'm sure any corvette owner would disagree. I think in the next generation it will be more about performance, especially if they use a cam in cam system like the viper.