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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 01-26-2011, 09:13 AM   #1
TX_Shane
 
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Cam package/kit needed for L99 to LS3

Going back to lurking

Last edited by TX_Shane; 06-24-2011 at 02:30 PM.
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Old 01-26-2011, 10:05 AM   #2
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check in the vendor parts section. most vendors on here are very quick with their responses and are tons of help!
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Old 01-26-2011, 06:03 PM   #3
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Jannetty Racing sells a complete conversion kit.
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Old 01-26-2011, 06:22 PM   #4
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Quote:
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Jannetty Racing sells a complete conversion kit.
This page has Ted's cam packages as well as the L99 to LS3 conversion kit

http://jreperformanceparts.com/gm/20...s.html?cat=331
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Old 01-26-2011, 06:31 PM   #5
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futral motorsports is who i went with . got everything you will need .
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Old 01-26-2011, 07:21 PM   #6
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I got my conversion kit here http://www.lingenfelter.com/mm5/merc...gory_Code=C379.
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Old 01-26-2011, 07:26 PM   #7
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Livernois motorsports sells it. Jannetty Racing sells it and LG motorsports sells it.
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Old 01-27-2011, 08:30 AM   #8
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We have the complete conversion kit if you want to remove the VVT. Have you studied VVT? The main reason shops sell VVT delete kits is they don't have experience with VVT to run it properly.

VVT allows you to run the same duration camshafts you currently run, only with the ability to control the camshaft throughout the entire rpm pull? Why wouldn't anyone want that ability? It's one of the better advances the LS motors have made in several years.

Think of it this way

Does more advance make more power down low in the rpm band? Yes

Does less advance pickup power up top in the rpm band? Yes

Does VVT allow you to have the best of both worlds? Yes

Do you want the best possible power at every rpm point? If the answer is yes then you want VVT.
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Old 01-27-2011, 10:29 AM   #9
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Wait so the deal with these ls3 conversions is that they pretty much turn your auto into a manual?? Or am I missing something?
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Old 01-27-2011, 10:51 AM   #10
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Quote:
Originally Posted by Jason 98 TA View Post
We have the complete conversion kit if you want to remove the VVT. Have you studied VVT? The main reason shops sell VVT delete kits is they don't have experience with VVT to run it properly.

VVT allows you to run the same duration camshafts you currently run, only with the ability to control the camshaft throughout the entire rpm pull? Why wouldn't anyone want that ability? It's one of the better advances the LS motors have made in several years.

Think of it this way

Does more advance make more power down low in the rpm band? Yes

Does less advance pickup power up top in the rpm band? Yes

Does VVT allow you to have the best of both worlds? Yes

Do you want the best possible power at every rpm point? If the answer is yes then you want VVT.
The man has a point.....

Quote:
Originally Posted by Ben View Post
Wait so the deal with these ls3 conversions is that they pretty much turn your auto into a manual?? Or am I missing something?
It really just "converts" your L99 that comes in the Auto to an LS3 that comes in the manual cars. Does nothing to the transmission. The L99 has Variable Valve Timing (the camshaft advance/retard changes depending upon where in the rpm range you are) and the L99 has DOD (displacement on demand, shutting off half the cylinders under certain conditions), the LS3 has neither of these and is a more traditional pushrod V8.
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Old 01-27-2011, 11:02 AM   #11
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Can you go with a full spec range of camshafts w/ VVT... Answer = No
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Old 01-27-2011, 11:06 AM   #12
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Does somebody sell a decent blower cam for the L99 w/vvt? Also, is there an upgraded lifter available as well?

Last edited by lewylew; 01-27-2011 at 11:07 AM. Reason: typo
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Old 01-27-2011, 01:57 PM   #13
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Does somebody sell a decent blower cam for the L99 w/vvt? Also, is there an upgraded lifter available as well?
LS7 lifters are the replacement. There are lots of blower friendly cams for VVT out there.
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Old 01-27-2011, 03:30 PM   #14
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Quote:
Originally Posted by TX_Shane View Post
Thanks for everyones input.
Let us know what you do.....
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Old 01-27-2011, 08:53 PM   #15
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Quote:
Originally Posted by Jason 98 TA View Post
The main reason shops sell VVT delete kits is they don't have experience with VVT to run it properly.
I respect what you are doing with VVT cams.

But your Statement is misleading and untrue, I have been working with VVT cams for more than 6 years.

The reason we eliminate VVT is because VVT limits you on how big of a cam you can run because as the cam gets bigger you have to limit how much the VVT system can advance or retard the cam to avoid Piston to valve Crashes.

The other reason is, if you want to rev the engine higher you have to run heavier valve springs, Heavier valve springs put more load on the VVT system and in most cases the VVT system can't deal with heavy valve springs for long.

We have Seen what a failed VVT system does to Valves and pistons.

I will Not dispute the advantages of VVT for making power with Small Cams but most guys don't want small cams they want big cams that lope and sound cool.

Ted.
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Old 01-27-2011, 09:15 PM   #16
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I understand your concerns with the Vvt based off fords vvt issues, but the gm system is different. We've run large camshaft very well with vvt. Case in point my personal 475rwhp a6 heads cam l99 car.

You give me any camshaft you can design & I'll give you the vvt equivalent that will out power it at almost every rpm point.

But what do I know I only have 300 dyno pulls on a l99 on my engine dyno. One day we will all look back to these times and wonder how the crap some people thought vvt wasn't a huge step forward.
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Old 01-27-2011, 09:16 PM   #17
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We have vvt camshafts in the 230s duration that has made over 100 hp gains on my engine dyno.
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Old 01-27-2011, 09:26 PM   #18
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My only concern was your quote.

I applaud what you guys are doing with Cams and testing.

Ted.
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Old 01-27-2011, 09:30 PM   #19
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Ted I am just wanting people to study what makes vvt so special. The ability to move the camshaft throughout the rpm band is a amazing feature.

Also pv contact Is not a issue because the camshaft limiters prevent the camshaft from moving into p/v interference range.
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Old 01-27-2011, 09:32 PM   #20
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I'm picking up some new L92 Scoggin heads tomorrow and will definitely be doing a VVT delete... Time to go Cam shopping now...
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Old 01-27-2011, 09:43 PM   #21
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someone make a vvt blower cam with heavy lope, please?
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Old 01-28-2011, 08:27 AM   #22
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Have you not heard the VVT-3 we posted video clips & dyno data from? The camshaft made 100 flywheel horsepower gains & chops just like any LS3 camshaft would chop.

Just because it's a VVT camshaft doesn't mean it doesn't chop, I dont know who started that rumor, but it's ridiculous!

My current L99 automatic car makes 475 rear wheel horsepower with the VVT-3 camshaft & PRC ported heads. I don't think you'll find another heads/cam L99 car making that.
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Old 01-28-2011, 08:29 AM   #23
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Here's a cam only automatic with the VVT-3 camshaft!

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Old 01-28-2011, 07:38 PM   #24
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Jason/Ted how is the longevity of running a VVT cam over a traditional setup? Which would be more prone to failure as a daily driver?
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Old 01-28-2011, 09:00 PM   #25
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Jason/Ted how is the longevity of running a VVT cam over a traditional setup? Which would be more prone to failure as a daily driver?
I dont think anyone can comment for certainty. Every shop has their own opinion on the VVT vs. Locked Timing. I personally am still not at the point that VVT can be recommended to keep by us. The GM system is actually very similar to the ford system. If you look at the basic design there are some very strong similarities between them. Of course there are differences as well, but more similarities than those differences.

I think the biggest question to ask is how is it going to hold up on a 25k mile car, 50k mile car, 100k? we all know oil pressure drops with wear/tear. Being the system is directly tied to oil pressure it absolutely can be a failure point. It also takes a very large volume of oil to run taking that oil flow away from other areas such as cam bearings.

We have noticed on numerous vehicles with vvt, afm, and vvt/afm combined that there seems to be a prevalent amount of cam bearing wear on these when compared to a traditional LS engine.

For these reasons, we delete afm and vvt. Our standpoint is keep the HP, we want proven, time tested durability. We know you can make more HP.

Another way to look at this. We run a minimum clearance of .100 PTV on any of our builds, even though running a bigger cam with less clearance might make more power. Plenty of people run cams at .050 and less PTV and have no issues, but we would never do so on any of our builds, even if it meant making slightly less HP, the peace of mind is well worth it to us.
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