Is VVT worth it?
Thread Starter
Staging Lane
Joined: Oct 2012
Posts: 63
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Is VVT worth it? I have a stock LY6 that I'm wanting to do a cam, LS 3 intake, and header in my Nova. Looking for 450 ish rwhp with a T56 tranny. It looks like I'm going to have to replace the entire front drive and accessories to a 2010 camaro or vette. This will be used a just a street rod so I'd like a nice hot cam and the engine needs to look clean. That's why I'm using the ls3 intake and car accessories.
I know there was some success with the tsp vvt cams but not sure how good the tuning is? Can I reach the same hp with a non vvt cam without the headaches or is it worth me keeping the vvt and why?
I know there was some success with the tsp vvt cams but not sure how good the tuning is? Can I reach the same hp with a non vvt cam without the headaches or is it worth me keeping the vvt and why?
TECH Junkie
Joined: Dec 2005
Posts: 3,092
Likes: 11
I am keeping mine. You should be able to make 450rwhp with no problem using a T56 transmission. The people over at Texas Speed and Performance should be able to help you out. By the way I am hoping to be making at least that much horsepower through an A6.
Just a street rod? Keep your VVT. If your building an all out race engine, then drop the VVT. You most certainly can have similar power numbers either way. What the VVT does is "move" the powerband around for a broader feel. It doesn't make any more, or less power. I am keeping my VVT, and in fact just got my cam kit from Mast.
Thread Starter
Staging Lane
Joined: Oct 2012
Posts: 63
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I'm only worried about two things with vvt. One being tuning on the vvt cam? 2nd is the front drive components such as water pump, timing cover, and all accessories I want to run ( alt, and ac). I know the cam phaser makes this stuff stick out about 2" further than a non vvt.
Thread Starter
Staging Lane
Joined: Oct 2012
Posts: 63
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Just a street rod? Keep your VVT. If your building an all out race engine, then drop the VVT. You most certainly can have similar power numbers either way. What the VVT does is "move" the powerband around for a broader feel. It doesn't make any more, or less power. I am keeping my VVT, and in fact just got my cam kit from Mast.
Vvt is crap, ditch it. u can still run truck accessories with a car intake all u need to do is cut off the idle pulley on the side of the alternator and run a smaller belt, look into porting the heads and a 235 244 cam and 450 rwhp is there 
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Staging Lane
Joined: Oct 2012
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Can u elaborate on why I should ditch? Also ur saying all I need to do is cut the pulley? I read where someone cut it and relocated it further to the drivers side. Do u have pics?
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Staging Lane
Joined: Oct 2012
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I did it on my s10, and vvt is more for fuel economy not for performance. If u have dod ditch that crap too.
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Staging Lane
Joined: Oct 2012
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Thread Starter
Staging Lane
Joined: Oct 2012
Posts: 63
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Vengeance is a shop and they do their tuning in house using efi live. They recommended using one of their cams without vvt on my ly6. I had great results with the stage 2. You might want to ask them about their KAOTIK if you are shooting for 450rwhp, but that might be a little too much for the ly6s lower compression.
Last edited by futureuser; Oct 8, 2012 at 07:48 AM.
VVT does not limit you because of lobes...you can actually use pretty well any lobe that you'd use on an LS3 setup with VVT combos. You are limited if you keep AFM/DOD however, on stock lifters, because they will not live with higher lift.
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Corrected that statement for ya in bold.
VVT does not limit you because of lobes...you can actually use pretty well any lobe that you'd use on an LS3 setup with VVT combos. You are limited if you keep AFM/DOD however, on stock lifters, because they will not live with higher lift.
VVT does not limit you because of lobes...you can actually use pretty well any lobe that you'd use on an LS3 setup with VVT combos. You are limited if you keep AFM/DOD however, on stock lifters, because they will not live with higher lift.
It does limit the amount of duration that you can run and the cam timing that could be used.
TECH Fanatic
Joined: Jul 2005
Posts: 1,685
Likes: 7
From: Beebe, Arkansas
The LY6 is a non AFM motor.
All you need to do to clear the car intake is trim the alt bracket and move the idle pulley. The Gen IV water pump will clear a Gen IV DBW tb as it exits at a 45* angle.
The 2010 camaro waterpump will clear the VVT as its the same one used on the L99 with VVT.
If its not an all out drag car. I would keep the VVT and get an aftermarket VVT cam.
All you need to do to clear the car intake is trim the alt bracket and move the idle pulley. The Gen IV water pump will clear a Gen IV DBW tb as it exits at a 45* angle.
The 2010 camaro waterpump will clear the VVT as its the same one used on the L99 with VVT.
If its not an all out drag car. I would keep the VVT and get an aftermarket VVT cam.
See https://ls1tech.com/forums/generatio...-vvt-cams.html
There are pitfalls to be aware of when using a VVT system, for example different phasers, limiters and cam cores. Valve clearance is not easy to measure because you need to actuate the cam to full advance and retard. If you go with one of TSP or Mast's shelf grinds, you have a better chance of clearing your stock LY6 pistons, but you always should check. Converting back to an LS2 or LS3 timing set will give you more cam options.
I think futureuser has had the best results I've seen from an LY6 on the forums and he used a nonVVT cam, but in the year 2050 when my Nova is on the road, I'm going to annihilate him with my VVT-2 from Texas Speed
(assuming he didn't modify that C6 accelerator pedal with a limiter before he sent it) Last edited by -TheBandit-; Oct 16, 2012 at 05:04 PM.