VVT in Performane Applications ?
03-14-2014, 08:54 AM
#1
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VVT in Performane Applications ? How reliable is VVT when used in a performance application ?
Are there any "down-sides" to using it ?
Is is compatible with all LS blocks and aftermarket Timing Sets ?
Are there any "down-sides" to using it ?
Is is compatible with all LS blocks and aftermarket Timing Sets ?
03-14-2014, 12:15 PM
#2
I believe you need a block that is set up for it like the Gen4 blocks. It uses oil pressure to advance and retard the camshaft. Well actually spring pressure for the advance. I don't know about the aftermarket stuff as most I have seen are using the factory components except for a "block" that limits the amount of advance when using a high performance camshaft. That is so the valves don't hit the pistons.
No downside that I can see. More and more people are now getting 500rwhp using VVT. On the Camaro5 forum the faster cars seem to be the ones retaining VVT. I kept mine on my L92 motor. A lot of discussion about VVT on the Camaro5 forum if you are interested.
Now DOD is another story but you did not ask about that.
No downside that I can see. More and more people are now getting 500rwhp using VVT. On the Camaro5 forum the faster cars seem to be the ones retaining VVT. I kept mine on my L92 motor. A lot of discussion about VVT on the Camaro5 forum if you are interested.
Now DOD is another story but you did not ask about that.
03-14-2014, 03:48 PM
#3
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I believe you need a block that is set up for it like the Gen4 blocks. It uses oil pressure to advance and retard the camshaft. Well actually spring pressure for the advance. I don't know about the aftermarket stuff as most I have seen are using the factory components except for a "block" that limits the amount of advance when using a high performance camshaft. That is so the valves don't hit the pistons.
No downside that I can see. More and more people are now getting 500rwhp using VVT. On the Camaro5 forum the faster cars seem to be the ones retaining VVT. I kept mine on my L92 motor. A lot of discussion about VVT on the Camaro5 forum if you are interested.
Now DOD is another story but you did not ask about that.
No downside that I can see. More and more people are now getting 500rwhp using VVT. On the Camaro5 forum the faster cars seem to be the ones retaining VVT. I kept mine on my L92 motor. A lot of discussion about VVT on the Camaro5 forum if you are interested.
Now DOD is another story but you did not ask about that.
As for DOD & AFM, not interested in either of those.
03-14-2014, 04:56 PM
#4
"I've heard that it is possible to use VVT in GEN III blocks . . . ???"
I don't know. You would have to transfer parts and up grade to a 58X crankshaft among other things. To me it would be easier to just buy one in a junk yard such as the LY6.
I don't know. You would have to transfer parts and up grade to a 58X crankshaft among other things. To me it would be easier to just buy one in a junk yard such as the LY6.
03-14-2014, 08:34 PM
#5
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There are no down sides to it in a performance application or any application!
It is compatible with all ls blocks but it uses a single roller timing chain and a VVT gear (can not use aftermarket timing sets) and a VVT front cover! Of course you would have to use a ECM that could drive it! And yes you would need a 58X wheel on the crank also!
The cam also has to be a VVT core! The VVT gear uses oil pressure to retard the cam only it can't advance it!
I have a 2013 Camaro with a small VVT cam and made 504 RWHP and also ran 10.93 @ 126.86 on drag radials the first time out!
03-15-2014, 01:13 PM
#6
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There are no down sides to it in a performance application or any application!
It is compatible with all ls blocks but it uses a single roller timing chain and a VVT gear (can not use aftermarket timing sets) and a VVT front cover! Of course you would have to use a ECM that could drive it! And yes you would need a 58X wheel on the crank also!
The cam also has to be a VVT core! The VVT gear uses oil pressure to retard the cam only it can't advance it!
I have a 2013 Camaro with a small VVT cam and made 504 RWHP and also ran 10.93 @ 126.86 on drag radials the first time out!
It is compatible with all ls blocks but it uses a single roller timing chain and a VVT gear (can not use aftermarket timing sets) and a VVT front cover! Of course you would have to use a ECM that could drive it! And yes you would need a 58X wheel on the crank also!
The cam also has to be a VVT core! The VVT gear uses oil pressure to retard the cam only it can't advance it!
I have a 2013 Camaro with a small VVT cam and made 504 RWHP and also ran 10.93 @ 126.86 on drag radials the first time out!
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Mike
03-15-2014, 04:15 PM
#7
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I think I'll wait a while before trying VVT. I might buy the setup, so I have it on hand, down the road. I think the GM parts run less than $500, right ?
I hope the aftermarket can address the Timing Set situation.
Does it use the LS2 chain or is it a totally different setup ?
I hope the aftermarket can address the Timing Set situation.
Does it use the LS2 chain or is it a totally different setup ?
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03-15-2014, 06:24 PM
#8
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I think I'll wait a while before trying VVT. I might buy the setup, so I have it on hand, down the road. I think the GM parts run less than $500, right ?
I hope the aftermarket can address the Timing Set situation.
Does it use the LS2 chain or is it a totally different setup ?
I hope the aftermarket can address the Timing Set situation.
Does it use the LS2 chain or is it a totally different setup ?
03-15-2014, 07:05 PM
#9
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03-15-2014, 11:00 PM
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