Will LS3 aftermarket parts work with L99? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Isaacnc · 03-06-2009, 10:23 AM

Hey guys,
I am getting a L99 (automatic) Camaro SS and I was wondering if the LS3 aftermarket parts will work and fit for my SS or are they going to make seperate parts for LS3 & L99. What do yall think/know?

*GTAHVIT* · 03-06-2009, 10:29 AM

I think you will have to be careful with any valve train modifications. As the valve setup on the L99 is set up for the AFM. Otherwise you should be pretty safe with LS3 aftermarket parts.

JJ#48Racing · 03-06-2009, 01:54 PM

Short answer is some will, some won't. Most of the different parts are in the valvetrain.

*CamaroSpike23* · 03-06-2009, 04:20 PM

bolt-ons will all interchange. actual engine modification, no.

meaning, CAI, exhaust, headers, t/b, fuel injectors, etc will all interchange.

cams, rockers, heads, etc will need to be specific for the L99

mike@newera · 03-06-2009, 10:25 PM

Quote:

Originally Posted by CamaroSpike23

bolt-ons will all interchange. actual engine modification, no.

meaning, CAI, exhaust, headers, t/b, fuel injectors, etc will all interchange.

cams, rockers, heads, etc will need to be specific for the L99

For the most part, this will be true depending on the internal component. Stay tuned, we just ordered our project Camaro 2ss for testing, which will include product development for this platform (specifically the Auto with AFM/VVT) as we have done with the G8GT and then some.

meanmike · 03-06-2009, 10:28 PM

Quote:

Originally Posted by mike@newera

For the most part, this will be true depending on the internal component. Stay tuned, we just ordered our project Camaro 2ss for testing, which will include product development for this platform (specifically the Auto with AFM/VVT) as we have done with the G8GT and then some.

How do you find the time? Your alway's on g8 board and now here.

camaro1 · 03-06-2009, 11:16 PM

you can always delete the afm and vvt on your l99 and convert it to ls3/2 parts, pretty simple swap and with software like hp tuners or efi-live you can delete out the afm/vvt from the ecm

my L99 is coming out right away and a LS3 is going in!

Zabo · 03-07-2009, 01:18 AM

How does the AFM work? Is the crank split when the cylinders shut off, or is the EFI and valves deactivated in the valvetrain and fuel delivery system during AFM mode? If so it'd just be a valvetrain swap, and ECM recalibration as you said, correct?

Gentry78 · 03-07-2009, 04:52 AM

so the rockers are different on th l99 so aftermarket ls3 rockers will not work, correct?,anyone know why this is, is it because of the afm?

camaro1 · 03-07-2009, 08:33 AM

here is what you need to do to eliminate the afm/vvt and turn your l99 into a ls3 with your choice of camshaft

-choose a cam(any LSx 3 bolt)
-Get the correct length pushrods for your cam(LSx engines have non adjustable rocker arms and the lifter pre-load is set by using longer or shorter pushrods)
-get valve springs to match your cam(pac1218 or pac1518 are great beehive springs and are a direct swap)
-swap the cam sprocket(LS2 with 4x)
-swap the front cover(LS2/LS3 will work)
-swap the lifters(LS2/3/7)
-swap the lifter retainers(LS2/3/7)
-swap the valley cover (LS2/3 will work as long as it has the o-ring's to block off the afm towers in the valley)

buy hp tuners or efi live or have someone dyno tune and remove the afm/vvt from the ecm

ZZcamaro · 03-07-2009, 09:28 AM

Quote:

Originally Posted by camaro1

here is what you need to do to eliminate the afm/vvt and turn your l99 into a ls3 with your choice of camshaft

-choose a cam(any LSx 3 bolt)
-Get the correct length pushrods for your cam(LSx engines have non adjustable rocker arms and the lifter pre-load is set by using longer or shorter pushrods)
-get valve springs to match your cam(pac1218 or pac1518 are great beehive springs and are a direct swap)
-swap the cam sprocket(LS2 with 4x)
-swap the front cover(LS2/LS3 will work)
-swap the lifters(LS2/3/7)
-swap the lifter retainers(LS2/3/7)
-swap the valley cover (LS2/3 will work as long as it has the o-ring's to block off the afm towers in the valley)

buy hp tuners or efi live or have someone dyno tune and remove the afm/vvt from the ecm

Or buy an LS3 car!

mike@newera · 03-07-2009, 10:46 AM

No, the rockers are the same, the lifters are different. We are getting the automatic because it has VVT/AFM, we developed camshafts to work with AFM aready, for the camaro we are going to get rid of AFM and create some custm cams to work with VVT, there are some pretty big advantages to having this VVT option, and I think that with tuning the VVT will make more power everywhere.

*CamaroSpike23* · 03-07-2009, 10:49 AM

Quote:

Originally Posted by mike@newera

No, the rockers are the same, the lifters are different. We are getting the automatic because it has VVT/AFM, we developed camshafts to work with AFM aready, for the camaro we are going to get rid of AFM and create some custm cams to work with VVT, there are some pretty big advantages to having this VVT option, and I think that with tuning the VVT will make more power everywhere.

awesome. thanks for the heads up. now I know who to hit up with questions for tuning with AFM.

1320junkie · 03-07-2009, 11:24 AM

Quote:

Originally Posted by ZZcamaro

Or buy an LS3 car!

03-06-2009, 10:23 AM	#1
Isaacnc SS Kid Drives: 2002 Camaro SS/2010 Camaro SS Join Date: Feb 2009 Location: San Antonio, TX Posts: 47 View My Garage	Will LS3 aftermarket parts work with L99? Hey guys, I am getting a L99 (automatic) Camaro SS and I was wondering if the LS3 aftermarket parts will work and fit for my SS or are they going to make seperate parts for LS3 & L99. What do yall think/know? __________________ Ordered Feb. 1st: 2010 Camaro SS Inferno Orange Metallic

03-06-2009, 10:29 AM	#2
GTAHVIT Blessed Drives: 2013 Sonic RS MT Join Date: Dec 2007 Location: Saint Augustine FL Posts: 28,441 View My Garage	I think you will have to be careful with any valve train modifications. As the valve setup on the L99 is set up for the AFM. Otherwise you should be pretty safe with LS3 aftermarket parts. __________________ Click image to see build thread. PQ - "the love of cars. It's a boys first step toward manhood and a mans last hold on boyhood." Fbodfather - "We do not want to use the Z28 moniker on a car that does not deserve this hallowed name." The_Blur - "Let's not confuse competitors with equals."

03-06-2009, 11:16 PM	#7
camaro1 Drives: 550+RWHP 2010 camaro Join Date: Sep 2007 Location: wisconsin Posts: 1,588	you can always delete the afm and vvt on your l99 and convert it to ls3/2 parts, pretty simple swap and with software like hp tuners or efi-live you can delete out the afm/vvt from the ecm my L99 is coming out right away and a LS3 is going in! __________________ 415ci stroker, TVS 2300 Magnacharger, cnc heads, cam, yank ss3200 converter, Kooks long tubes, Bwoody true cold air kit, ZL1 Pump, magnaflow 3" cat-back, lowering springs,BMR control arms and tie rod bars, 3.73 gears, diff mounts, RX can, ADM fuel controller

03-07-2009, 08:33 AM	#10
camaro1 Drives: 550+RWHP 2010 camaro Join Date: Sep 2007 Location: wisconsin Posts: 1,588	here is what you need to do to eliminate the afm/vvt and turn your l99 into a ls3 with your choice of camshaft -choose a cam(any LSx 3 bolt) -Get the correct length pushrods for your cam(LSx engines have non adjustable rocker arms and the lifter pre-load is set by using longer or shorter pushrods) -get valve springs to match your cam(pac1218 or pac1518 are great beehive springs and are a direct swap) -swap the cam sprocket(LS2 with 4x) -swap the front cover(LS2/LS3 will work) -swap the lifters(LS2/3/7) -swap the lifter retainers(LS2/3/7) -swap the valley cover (LS2/3 will work as long as it has the o-ring's to block off the afm towers in the valley) buy hp tuners or efi live or have someone dyno tune and remove the afm/vvt from the ecm __________________ 415ci stroker, TVS 2300 Magnacharger, cnc heads, cam, yank ss3200 converter, Kooks long tubes, Bwoody true cold air kit, ZL1 Pump, magnaflow 3" cat-back, lowering springs,BMR control arms and tie rod bars, 3.73 gears, diff mounts, RX can, ADM fuel controller

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03-06-2009, 01:54 PM	#3
JJ#48Racing Drives: 1998 Camaro SS Join Date: Oct 2008 Location: Lancaster, CA Posts: 1,115	Short answer is some will, some won't. Most of the different parts are in the valvetrain.

03-07-2009, 01:18 AM	#8
Zabo Gunning for Sixth Drives: '03 ZR2 Blazer Join Date: Sep 2008 Location: Woodhaven, Michigan Posts: 9,358 View My Garage	How does the AFM work? Is the crank split when the cylinders shut off, or is the EFI and valves deactivated in the valvetrain and fuel delivery system during AFM mode? If so it'd just be a valvetrain swap, and ECM recalibration as you said, correct?

03-07-2009, 04:52 AM	#9
Gentry78 HOOK'EM Drives: 97 c1500/92 olds Join Date: Oct 2008 Location: Texas Posts: 5,279	so the rockers are different on th l99 so aftermarket ls3 rockers will not work, correct?,anyone know why this is, is it because of the afm?

03-07-2009, 10:46 AM	#12
mike@newera Drives: 2016 Camaro SS Join Date: Jan 2009 Location: Rochester, NY Posts: 529	No, the rockers are the same, the lifters are different. We are getting the automatic because it has VVT/AFM, we developed camshafts to work with AFM aready, for the camaro we are going to get rid of AFM and create some custm cams to work with VVT, there are some pretty big advantages to having this VVT option, and I think that with tuning the VVT will make more power everywhere.