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? |
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.
|
Short answer is some will, some won't. Most of the different parts are in the valvetrain.
|
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 |
Quote:
|
Quote:
|
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! |
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?
|
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?
|
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 |
Quote:
|
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.
|
Quote:
awesome. thanks for the heads up. now I know who to hit up with questions for tuning with AFM. |
Quote:
|
All times are GMT -5. The time now is 10:04 PM. |
Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.