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Old 08-26-2011, 09:12 PM   #1
DieselDork
 
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Comprehensive L99 to LS3 conversion parts list

I'm wanting to convert my L99 to an LS3. I would like to compile the exact list of parts required. I realize that there are reasons beyond just the conversion that most would want to do, but for the sake of understanding exactly what's involved in ONLY an L99 to LS3 conversion, I hope to compile a list of ONLY the parts required for that conversion. If, for example, it is required to change the cam gear or tune out AFM/DOD then please let me know so that I can change the parts list below to include that.

To date, I have managed to figure out that I need at least these GM parts:
  • 12610046 - LS3 Head Gaskets (2)
  • 12617944 - LS3 Exhaust Gaskets (2)
  • 17800568 - Head Bolts (2)
  • 12557840 - Balancer Bolt (1)
  • 12599296 - Valley Cover Kit (1)
  • 12600326 - Front Cover Kit (1)
  • 12585673 - Front Crank Seal (1)
  • 12633904 - Timing Cover Gasket (1)
  • 11515758 - M8 Bolts (8)
  • 11588712 - M6 Bolt (1)
  • 12627501 - Camshaft Position Sensor Harness (1)
  • 12591720 - Camshaft Position Sensor (1)
  • 12499225 - GM LS Lifters (1)
  • 12595365 - Lifter Buckets (4)

Please help me fill in what I am missing.
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Old 08-26-2011, 09:44 PM   #2
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If you're doing it yourself you should send an email to a vendor here. They'll give you a good price on the kit and suggest other stuff you might like/ need.
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Old 08-26-2011, 10:02 PM   #3
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Understood, and Thank you for the input. I've seen several kits from various vendors. Most are in fact geared for other things that one might want/need. For example, one vendor lists a cam gear with his, another does not... which one has ONLY the ABSOLUTE necessities? Although I am formulating a plan for the car, I would most like to know exactly what I am buying. Kits from vendors range from just over $600 to well over $700. I'd just like to know exactly what's required to do the conversion so that I can make a better informed decision without other farkles/niceities/cool-stuff clouding my understanding of the basic requirements. I'm not really interested in pricing though. At this point, I just want to understand. worrying with the dollars is just another distraction to the understanding.
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Old 08-27-2011, 08:35 AM   #4
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Venders

If you read through the different Forums on here you will be able to make good decisions on which venders to trust just by reading their posts and how they interact with people on here. IMHO Jannetty is one of the best. Their honesty, customer service, and professionalism is matched by very few on here. If you have questions about any of their packages they are quickly answered by a phone call. The LS3 conversion kit is in the 700's but because of my interaction with them and the quality of their products, i will pay the extra because of the trust I have in them. If there are any parts NOT required in their package a phone call would answer that.

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Old 08-27-2011, 08:40 AM   #5
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Texas Speed sells a kit that has every part you need. It's equal or cheaper then what you can buy the parts for on your own. We used it last week on a friends' G8, exact same install as an L99 camaro. Can't go wrong, we had zero leftover parts.
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Old 08-27-2011, 10:08 AM   #6
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Thank you for you input. However, information on selecting a vendor does not help me understand what parts are involved for the swap.

I had a bad feeling that my post would result in a exactly what I got. No useable information. IMHO, this is a forum. As such, I would expect that it is a place to learn and understand. 99% of the posts out here could accurately be answered with "call a vendor". What's the point of having a forum if that's everyones answer? I would have thought that a good forum would be full of gear-heads eager to learn and understand.

I'm not looking to buy anything at this point. I am not looking to waste a vendors time and run up their phone bill by calling and asking questions with no intent to buy. I do not believe that is fair to them.

If I wanted to buy a kit, I'd call a vendor and buy a kit. I'm not interested in that. I am researching the parts to do the swap. Just for my own information and education.

Sorry for bashing on you guys... I'm just frustrated. Two days of searching didn't net me the information I was looking for. I thought making a specific post would help.
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Old 08-27-2011, 01:13 PM   #7
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Quote:
Originally Posted by DieselDork View Post
Thank you for you input. However, information on selecting a vendor does not help me understand what parts are involved for the swap.

I had a bad feeling that my post would result in a exactly what I got. No useable information. IMHO, this is a forum. As such, I would expect that it is a place to learn and understand. 99% of the posts out here could accurately be answered with "call a vendor". What's the point of having a forum if that's everyones answer? I would have thought that a good forum would be full of gear-heads eager to learn and understand.

I'm not looking to buy anything at this point. I am not looking to waste a vendors time and run up their phone bill by calling and asking questions with no intent to buy. I do not believe that is fair to them.

If I wanted to buy a kit, I'd call a vendor and buy a kit. I'm not interested in that. I am researching the parts to do the swap. Just for my own information and education.

Sorry for bashing on you guys... I'm just frustrated. Two days of searching didn't net me the information I was looking for. I thought making a specific post would help.
Dude, I feel ur pain. When I was looking at forging/stroking my ls3, I tried without success to figure out the exact parts list needed. In the end, I just called John Lee at APF and he answered everything over the phone.

This is a post from LS1tech; don't know if it is accurate--

L99 is the 6.2L engine that comes in the auto 2010 Camaro's. They come with VVT and AFM. The normal situation is to swap lifters, lifter guides, head gaskets, head bolts, camshaft, cam gear, front cover, (sometimes) oil pump, valley cover, and then tune the computer. It is basically to take the cam phaser off and take the DOD off.
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Old 08-27-2011, 01:24 PM   #8
SRT10KLLR

 
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Quote:
Originally Posted by DieselDork View Post
I'm wanting to convert my L99 to an LS3. I would like to compile the exact list of parts required. I realize that there are reasons beyond just the conversion that most would want to do, but for the sake of understanding exactly what's involved in ONLY an L99 to LS3 conversion, I hope to compile a list of ONLY the parts required for that conversion. If, for example, it is required to change the cam gear or tune out AFM/DOD then please let me know so that I can change the parts list below to include that.

To date, I have managed to figure out that I need at least these GM parts:
  • 12610046 - LS3 Head Gaskets (2)
  • 12617944 - LS3 Exhaust Gaskets (2)
  • 17800568 - Head Bolts (2)
  • 12557840 - Balancer Bolt (1)
  • 12599296 - Valley Cover Kit (1)
  • 12600326 - Front Cover Kit (1)
  • 12585673 - Front Crank Seal (1)
  • 12633904 - Timing Cover Gasket (1)
  • 11515758 - M8 Bolts (8)
  • 11588712 - M6 Bolt (1)
  • 12627501 - Camshaft Position Sensor Harness (1)
  • 12591720 - Camshaft Position Sensor (1)
  • 12499225 - GM LS Lifters (1)
  • 12595365 - Lifter Buckets (4)

Please help me fill in what I am missing.
It looks like you have everything covered. I did it in two steps with the DOD delete first now I will be getting rid of the VVT. I was installing the Mast Stage II VVT cam.

I bought the DOD delete kit from Thunder Racing.

DOD delete kit had the following:

-GM LS7 Lifters
-GM LS2 Valley Cover
-GM Lifter Trays
-GM Head Bolts

Added

-GM LS3 Head Gaskets
-ARP Head Bolts

I did not use the GM head bolts and instead went with ARP head bolts.


Now a custom grind non-VVT turbo cam is going in so it requires the L99 to LS3 conversion.


VVT delete kit has the following:

-GM Camshaft Position Sensor Harness - 12627501
-GM Camshaft Position Sensor - 12591720
-GM Camshaft Sprocket - 12586481
-GM LS2 Timing Chain Dampener - 12588670
-GM Front Crank Seal - 12585673
-GM Front Cover -
-GM LS9 Head Gaskets - 12622033
-ARP Head Studs - 234-4317
-ARP Cam Bolts - 134-1003

Switched to LS9 head gaskets and ARP head studs this time around do to going FI. The only thing I did not see on your list was the following.

-GM Camshaft Sprocket - 12586481
-GM LS2 Timing Chain Dampener - 12588670
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Old 08-27-2011, 01:28 PM   #9
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I know you will need a tune to turn off the cam phaser and to tune for the new cam.

Bill
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Old 08-27-2011, 01:32 PM   #10
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My car is at haddad doing the ls3 conversion right now. Here is my list of parts used.

This kit includes most items you will need to convert your L99 Engine to an LS3 or a complete kit to allow you to complete your project. The Lingenfelter Camshaft & Cylinder Head Installation Kit GM L99 to LS3 Conversion Kit includes the following items.

- 12610046 LS3 Head Gaskets (2)
- 12617944 LS3 Exhaust Gaskets (2)
- 17800568 Head Bolts (2)
- 12557840 Balancer Bolt (1)
- 12599296 Valley Cover Kit (1)
- 12600326 Front Cover Kit (1)
- 12585673 Front Crank Seal (1)
- 12633904 Timing Cover Gasket (1)
- 11515758 M8 Bolts (8)
- 11588712 M6 Bolt (1)
- 12627501 Camshaft Position Sensor Harness (1)
- 12591720 Camshaft Position Sensor (1)
- 12499225 GM LS Lifters (1)
- 12595365 Lifter Buckets (4)
- L200175307 3 Bolt Cam Conversion,4x Cam Sprocket,Chain Damper & Bolts,3 Cam Bolts
- SD3SR602 HD IWIS Timing Chain (1)
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Old 08-27-2011, 02:56 PM   #11
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Quote:
Originally Posted by Venom_SS View Post
My car is at haddad doing the ls3 conversion right now. Here is my list of parts used.

This kit includes most items you will need to convert your L99 Engine to an LS3 or a complete kit to allow you to complete your project. The Lingenfelter Camshaft & Cylinder Head Installation Kit GM L99 to LS3 Conversion Kit includes the following items.

- 12610046 LS3 Head Gaskets (2)
- 12617944 LS3 Exhaust Gaskets (2)
- 17800568 Head Bolts (2)
- 12557840 Balancer Bolt (1)
- 12599296 Valley Cover Kit (1)
- 12600326 Front Cover Kit (1)
- 12585673 Front Crank Seal (1)
- 12633904 Timing Cover Gasket (1)
- 11515758 M8 Bolts (8)
- 11588712 M6 Bolt (1)
- 12627501 Camshaft Position Sensor Harness (1)
- 12591720 Camshaft Position Sensor (1)
- 12499225 GM LS Lifters (1)
- 12595365 Lifter Buckets (4)
- L200175307 3 Bolt Cam Conversion,4x Cam Sprocket,Chain Damper & Bolts,3 Cam Bolts
- SD3SR602 HD IWIS Timing Chain (1)
I sent you a PM in reply to yours with my phone number.
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Old 10-07-2011, 07:17 PM   #12
ajp
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How much does this conversion cost (parts/labor)?
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Old 10-17-2011, 05:48 PM   #13
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I was looking at texas speeds stuff to do a VVT cam swap and that was just 1500 or there abouts... IMHO it should not be that much more to do a complete LS3 conversion. maybe 2000..
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Old 10-17-2011, 06:17 PM   #14
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This has been a recurring question, and I personally think that if you're tearing into the motor like that you might as well install a different cam and actually get some serious gains. It would be an awful shame for you to do the LS3 conversion, and then 6 months down the line you decide on camming it when you already spent a pretty penny on labor.
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