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Old 04-21-2008, 10:25 AM   #18
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I believe most of it should be a straight sway, physically. You'll likely need electrical connections, fuel connections, and intake manifold (among others) changes to a 3rd and 4th Gen., but the Gen III and Gen IV are nearly identical on the exterior (except for things like cam, crank, and knock sensor changes.)

IMHO, this is the exactly reason I'm trying to wait for a top dog model, so I don't have to spend $1K on mods' that will void my warranty. Regardless, there isn't anything quite like the sound of a cammed V8 though.
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Old 04-21-2008, 11:07 AM   #19
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Ya.. You cant just toss a cam in a stock ls3 and get 50 extra HP for a $300.

You need to do ALL the supporting mods first. And don't forget the custom tune thats about $500.

O ya.. and I would go with thunderracing. I loved their 224/224/114 cam in my LS1. with all the supporting mods, I got 395RWHP. and they have the best customer service too.
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Old 04-21-2008, 11:45 AM   #20
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how easy is a cam swap compared to most other engine mods? Is it recomended for gearheads only or would it be possible for someone with basic knowledge to do?
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Old 04-21-2008, 12:08 PM   #21
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I did my own cam swap with basic tools at my house. I did a lot of research, and took my time to make sure I did it correctly.

I pretty much learned how to work on a car by moding my 02 camaro. I did everything but tune it, and weld in the sub frames. Spend your money on tools, not install fees at a shop. And take the time to teach your self, its worth it.

Also If you plan it correctly you will end up doing the easy mods first and get better with a wrench along the way, so by the time your car is ready for a cam, you will be able to install it your self.
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Old 04-21-2008, 03:22 PM   #22
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how easy is a cam swap compared to most other engine mods? Is it recomended for gearheads only or would it be possible for someone with basic knowledge to do?
Itís not difficult, itís just a lot of work. You have to remove the water pump, timing chain, intake manifold, valve covers, rockers, a mess of hoses and wire. You also have to either remove the radiator and (some or all of) the grill/front clip or pull the engine out. The only really tricky part is getting the cam timing right and not leaving any leaks.

You shouldnít have to buy any tools, and if you do they are tools you should own anyway (except the engine hoist which you can rent). An experieced freind and/or shop manual will make things a lot easier.

You may also need new, more compressible valve springs if the new cam adds enough lift to make the stock springs stack or bind. If so then you will need a valve spring compressor and length of rope to stuff into the chamber (though the spark plug hole) to keep the valve from falling in. Iíve seen kits that allow you to use compressed air to hold the valves up, but if you lose pressure, you may end up having to pull the head to get the valve out.
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Old 04-21-2008, 03:29 PM   #23
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Itís not difficult, itís just a lot of work. You have to remove the water pump, timing chain, intake manifold, valve covers, rockers, a mess of hoses and wire. You also have to either remove the radiator and (some or all of) the grill/front clip or pull the engine out. The only really tricky part is getting the cam timing right and not leaving any leaks.

You shouldnít have to buy any tools, and if you do they are tools you should own anyway (except the engine hoist which you can rent). An experieced freind and/or shop manual will make things a lot easier.

You may also need new, more compressible valve springs if the new cam adds enough lift to make the stock springs stack or bind. If so then you will need a valve spring compressor and length of rope to stuff into the chamber (though the spark plug hole) to keep the valve from falling in. Iíve seen kits that allow you to use compressed air to hold the valves up, but if you lose pressure, you may end up having to pull the head to get the valve out.
anything else??? we have done this to our camaro, this sounds right...its a lot of work but its worth it to have a knowledgeable friend there to help out because if you screw it up, you have to do it again....
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Old 04-21-2008, 08:00 PM   #24
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Quote:
Originally Posted by Grape Ape View Post
Itís not difficult, itís just a lot of work. You have to remove the water pump, timing chain, intake manifold, valve covers, rockers, a mess of hoses and wire. You also have to either remove the radiator and (some or all of) the grill/front clip or pull the engine out. The only really tricky part is getting the cam timing right and not leaving any leaks.

You shouldnít have to buy any tools, and if you do they are tools you should own anyway (except the engine hoist which you can rent). An experieced freind and/or shop manual will make things a lot easier.

You may also need new, more compressible valve springs if the new cam adds enough lift to make the stock springs stack or bind. If so then you will need a valve spring compressor and length of rope to stuff into the chamber (though the spark plug hole) to keep the valve from falling in. Iíve seen kits that allow you to use compressed air to hold the valves up, but if you lose pressure, you may end up having to pull the head to get the valve out.
ok then, i say we just let gm save us all this work and let us order one from the factory with this cam.



who is with me???
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Old 04-21-2008, 08:05 PM   #25
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Old 04-22-2008, 04:46 AM   #26
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Old 04-22-2008, 04:48 AM   #27
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Old 04-22-2008, 07:26 AM   #28
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http://www.karlperformanceparts.com/...?idproduct=547

Holy snikies!!!

I tell you right now....if my 5th Gen comes w/ an LS3, I'm going to make every attempt at ordering mine w/ a factory installed cam like this one. It's going to kick all the others @sses! Sheat, yeah!!
Thanks for the link awesome motor. If it makes it in the new Camaro
it better have 19....teens in the back
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Old 04-22-2008, 11:45 AM   #29
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I hate to break it to you, but it will be a cold day in hell before the "hot cam" is factory installed in a Camaro because it wouldn't pass emissions. you may as well say you want to order your camaro with a 572 crate motor installed.

Also, you don't always have to pull the motor to install a cam. on a 4th gen, you just need to move/pull the radiator to get the cam in. of course that may be different on the 5th gen, but who knows....

this should give you a good idea of what is involved with a cam swap....
http://www.ls1howto.com/index.php?article=23
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Old 04-22-2008, 12:03 PM   #30
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I hate to break it to you, but it will be a cold day in hell before the "hot cam" is factory installed in a Camaro because it wouldn't pass emissions. you may as well say you want to order your camaro with a 572 crate motor installed.

Also, you don't always have to pull the motor to install a cam. on a 4th gen, you just need to move/pull the radiator to get the cam in. of course that may be different on the 5th gen, but who knows....

this should give you a good idea of what is involved with a cam swap....
http://www.ls1howto.com/index.php?article=23
i would kill for a camaro with a 572 in it, but we know that aint gonna happen either, if any thing they could put the camshaft in the trunk, and we will install it ourselves when we get home!!!
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Old 04-22-2008, 12:04 PM   #31
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I hate to break it to you, but it will be a cold day in hell before the "hot cam" is factory installed in a Camaro because it wouldn't pass emissions. you may as well say you want to order your camaro with a 572 crate motor installed.

Also, you don't always have to pull the motor to install a cam. on a 4th gen, you just need to move/pull the radiator to get the cam in. of course that may be different on the 5th gen, but who knows....

this should give you a good idea of what is involved with a cam swap....
http://www.ls1howto.com/index.php?article=23
Great link, I'm new to GM so I've never seen those rods to hold the lifters up. That is a neat trick.
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Old 04-22-2008, 12:27 PM   #32
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I used this link as a guide when I did my cam install. everything went very smooth... only tool i added was the Crane Cams Valve Spring Compressor Tool, it saved me A LOT of time. well worth the $120 even if I only used it one time
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Old 04-22-2008, 12:28 PM   #33
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I hate to break it to you, but it will be a cold day in hell before the "hot cam" is factory installed in a Camaro because it wouldn't pass emissions. you may as well say you want to order your camaro with a 572 crate motor installed.
Thats not necessarily true. The "hot Cam" is part of a GM issued crate engine.
http://www.gmperformanceparts.com/En...1224&engCat=ls
Possible Applications*

·It looks like "just an LS", but you know the truth
·Give your late model Corvette a new lease on life
·Update your fourth gen Trans Am with a LS1 replacement
·Don't forget the GM Performance Parts controller and harness specific for this application

The late model Corvettes and 4th Gen listed would have to pass emmisions

The LS3 and LS373 use, according to the GM Tech sheets, the same
Block: P/N 12584727
Comp Ratio: 10.7:1
Rocker Arm Ratio: 1.7:1
Cylinder Heads: P/N 12598594
Connecting rods: P/N 12617570
Pistons: P/N 19165089
Valve size (in): 2.16 intake / 1.59 exhaust

Main Differences
LS3 Camshaft P/N 12603844 - LS376 Camshaft type P/N 88958733
LS3 Camshaft duration (@.050 in): 219 degree intake / 228 degree exhaust - LS376 Camshaft duration (@.050 in): 204 degree intake / 211 degree exhaust

According to the Corvette forums, some people are already getting dealer upgrades.
http://forums.corvetteforum.com/show....php?t=1967097

Looks like you would also need a new controller unit.
P/N 19201327 LS376/480 Engine Controller Kit

Caution: With the harness details I keep seeing a note that it won't run in a production vehicle unless you use all of the kit parts and that it will not run the stock gauges, you must get aftermarket gauges.
- Need to find a GM shop to ask a tech. -

Last edited by Mythic; 04-22-2008 at 12:42 PM.
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Old 04-22-2008, 01:33 PM   #34
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If I remember correctly, the Hotcam didn't make as much power as the second LS6 (MY 2002) cam did. If I remember correcly, didn't the LS6 have more lift and a little less overlap and LSA?

I agree that GM wouldn't get a Hotcam into an OEM car but I'm sure they, if not many other companies have custom grinds that will give good power. To me though, GM engineered the engines as a package, and operate within a certain range. Typically, adding a cam will change the operating range in order to achieve maximum power, and sometimes that range goes outside of the parameters the engineers went by. Anyhoo, I'd prefer to keep things nice and simple and stay out of the long block.

To each his/her own
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