L96 vvt cam swap - CamaroZ28.Com Message Board


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Old 01-28-2017, 12:42 AM   #1
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L96 vvt cam swap

Ok everyone, I realize that I am not a camaro guy, but I come seeking wisdom. Can't find much on truck forums thats helpful. I have installed a tsp vvt-1 cam in an l96 6.0 (2011 2500hd). This is a stage 1 cam for an l99 which is why I have come here to find answers. I have obviously retained the vvt. I know there are mixed feelings on that, but its a 7k lb vehicle not a drag car and its my DD. The vvt cam I bought was recommended by tsp after I told them what I was doing. Just wanted a little pep in my step, and only went through with it because I ate the stock cam with a bad lifter. No other damage noted. Specs on this cam are .224/.227 .629/.629 on 113 lsa. I may be a digit off on lsa but im fairly certain (at work and dont have itnin front of me). I put a set of dual springs in rated to .650. Stock 823 heads. Everything I'e read says lift kills vvt motors. Can anyone weigh in.

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Old 01-28-2017, 08:19 AM   #2
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Re: L96 vvt cam swap

AFAIK, the problem with high-lift cams in the VVT motors is that the pistons can contact the valves.

There are two available solutions: delete the cam phaser system entirely, such that you no longer have VVT at all, or install a cam phaser limiter, which retains VVT but narrows its effective operating range in order to avoid piston-to-valve interference. With the phaser limiter, some hyper-aggressive cams are still going to be too much.

Personally, I'd opt for the phaser limiter. Even limited, VVT improves efficiency and broadens the torque curve. You need to consider your priorities and decide whether you care more about peak power or power under the curve.
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Old 01-28-2017, 09:44 AM   #3
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Re: L96 vvt cam swap

I did install comps phaser limiter. Just trying to make sure that and a proper tune is going to be enough.
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Old 01-28-2017, 09:45 AM   #4
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Re: L96 vvt cam swap

Cam isnt super aggressive either by my standards, but there just isnt much out there on the "new" vvt tech to validate that.
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Old 01-28-2017, 09:46 AM   #5
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Re: L96 vvt cam swap

Also the cam isnt very aggressive by my standards, but there isnt a lot of info out there on the "new" ls vvt tech to validate that.
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Old 01-28-2017, 09:51 AM   #6
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Re: L96 vvt cam swap

And to answer the question I am more concerned about a nice curve. Peak hp/tq is in no way my main goal here, just bump it up a little bit and maintain good driveability.
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