VVT Cams
Thread Starter
Joined: Apr 2010
Posts: 2,816
Likes: 86
From: Instagram @chevyhotrodder
Thread Starter
Joined: Apr 2010
Posts: 2,816
Likes: 86
From: Instagram @chevyhotrodder
For reference, here is the Comp tech bulletin regarding the phaser change.
http://www.compcams.com/Base/pdf/156...189%20core.pdf
Looks like you can ID which cam you need by the phaser part number:
http://www.compcams.com/Base/pdf/156...189%20core.pdf
Looks like you can ID which cam you need by the phaser part number:
•Original (old style) GM PN 1258994: 2007‐2008 (uses cam core 156‐)
•Current (new style) GM PN 12606358: 2007‐2009+ (uses cam core 189‐)
•Current (new style) GM PN 12606358: 2007‐2009+ (uses cam core 189‐)
Last edited by -TheBandit-; Nov 12, 2010 at 10:14 AM.
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I have a Mast Stage II VVT cam in the Camaro and last time I spoke to Horrace at SEMA he said the VVT cams don't play nice with my dual springs. That is why they use the beehive single springs. Too much spring pressure does not allow the correct function of the VVT cams.
TSP, is there any truth to that? Have you guys ran into any problems with dual springs during your testing?
TSP, is there any truth to that? Have you guys ran into any problems with dual springs during your testing?
Thread Starter
Joined: Apr 2010
Posts: 2,816
Likes: 86
From: Instagram @chevyhotrodder
I called TSP and spoke with Matt about their cam development. From what he said, it didn't sound to me like they would be radically different from what Comp or MAST is offering. He said they would have a little more lift because they were willing to run less piston-to-valve clearance than Comp.
I tried to ask pointed questions, but it sounded like Matt wasn't close enough to the development to know the details. Jason may be a better person to talk to. To be honest I did not get a warm & fuzzy from Matt. I felt like I had to pry to get him to tell me anything at all and he did virtually nothing to offer information or a sales pitch. The conversation was cold. Maybe I just called at a bad time, but it didn't make me want to buy from TSP.
I tried to ask pointed questions, but it sounded like Matt wasn't close enough to the development to know the details. Jason may be a better person to talk to. To be honest I did not get a warm & fuzzy from Matt. I felt like I had to pry to get him to tell me anything at all and he did virtually nothing to offer information or a sales pitch. The conversation was cold. Maybe I just called at a bad time, but it didn't make me want to buy from TSP.
I have a Mast Stage II VVT cam in the Camaro and last time I spoke to Horrace at SEMA he said the VVT cams don't play nice with my dual springs. That is why they use the beehive single springs. Too much spring pressure does not allow the correct function of the VVT cams.
TSP, is there any truth to that? Have you guys ran into any problems with dual springs during your testing?
TSP, is there any truth to that? Have you guys ran into any problems with dual springs during your testing?
I tried to ask pointed questions, but it sounded like Matt wasn't close enough to the development to know the details. Jason may be a better person to talk to. To be honest I did not get a warm & fuzzy from Matt. I felt like I had to pry to get him to tell me anything at all and he did virtually nothing to offer information or a sales pitch. The conversation was cold. Maybe I just called at a bad time, but it didn't make me want to buy from TSP.
I had great service and a lot of questions answered by Geoff at EPS though. PatG was very helpful too in fact. Anyways good thread im glad its still alive
Mast didn't say I would break anything using their cam with dual springs. They just said that the phasing would not work properly so it would be like not having the VVT in there. I don't know what phaser limiter they use though but probably a Comp.
They mentioned something about checking oil pressure to see if the phaser was working like it should.
They mentioned something about checking oil pressure to see if the phaser was working like it should.
I called TSP and spoke with Matt about their cam development. From what he said, it didn't sound to me like they would be radically different from what Comp or MAST is offering. He said they would have a little more lift because they were willing to run less piston-to-valve clearance than Comp.
I tried to ask pointed questions, but it sounded like Matt wasn't close enough to the development to know the details. Jason may be a better person to talk to. To be honest I did not get a warm & fuzzy from Matt. I felt like I had to pry to get him to tell me anything at all and he did virtually nothing to offer information or a sales pitch. The conversation was cold. Maybe I just called at a bad time, but it didn't make me want to buy from TSP.
I tried to ask pointed questions, but it sounded like Matt wasn't close enough to the development to know the details. Jason may be a better person to talk to. To be honest I did not get a warm & fuzzy from Matt. I felt like I had to pry to get him to tell me anything at all and he did virtually nothing to offer information or a sales pitch. The conversation was cold. Maybe I just called at a bad time, but it didn't make me want to buy from TSP.
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Thread Starter
Joined: Apr 2010
Posts: 2,816
Likes: 86
From: Instagram @chevyhotrodder
Not cold here, but there is only so much information we're willing to give out about our VVT cams. Their results speak for themselves and we're not willing to give away our R&D. Not the easiest cams to "pitch" to some with fairly limited info we are able to give. I wish it weren't that way, but it is.
Not really sure how to reply to this, Jimbo. We've got alot on our plated for R&D right now, and the LY6 is on that list. As soon as we have some more time, we'll definitely look into it farther, but at this point I do know it has as good, or better (exhaust side) clearance than the LS3 and L99 does. Any and all of our current camshaft and packages will work with the LY6, and later, we MIGHT decide to add to that lie-up some more specific camshafts for the LY6 and it's slightly lower compression. Hope that helps!
I hope you understand my hands really are somewhat tied on specs here and aren't offended by that. I've been hounding Jason to get me and the other sales guys more hard info we can give out and he says he is working on a way to give more without giving away the secrets and R&D. I will definitely post whatever he gives me as soon as I have more!
I hope you understand my hands really are somewhat tied on specs here and aren't offended by that. I've been hounding Jason to get me and the other sales guys more hard info we can give out and he says he is working on a way to give more without giving away the secrets and R&D. I will definitely post whatever he gives me as soon as I have more!
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
They're not too bad really. And we include the phaser tables with purchase of any of our VVT cam packages, so it's actually no more work for the end-user than tuning a regular camshaft combo!
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Even leaving the stock phase tables alone is still of decent benefit over a static cam so if your feared of messing with them just leave them and A/F the thing as per norm
We tested it just having the cam, no phaser tuning, and the results were nice! The phasing really is where the power is, and that stock table is great for the stock cam, but that's about it! There is nice power from tuning that phaser table!
__________________
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!