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

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Old 09-10-2011, 09:05 PM   #1
briancb1
 
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427 LS3 cam?

Sup guys

I searched around for my answer but nothing was very specific to my needs. I appreciate your help ahead of time.

I'm installing a 427 LS3 in my 06 M6 GTO in a few months. Im trying to find what cam specs are being used and what kind of power is being made to the wheels. Dyno graphs as well as your 427 setup is appreciated!

Build will be as follows:

TEA LS3 heads, LS3 intake (untouched), 90mm TB
4.070" flat tops with 11.2:1 compression
6.125 compstar rods
4.125" compstar crank
1.75" headers, 3" catless mids, will be a 3" exhaust


Im also up in the air about the FAST 102 or NW 102 setup, seems to give little power for practically $1400. Anybody dyno stock setup first before moving over to a 102/102 setup?

Thanks for all your help Camaro brothers.
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Old 09-11-2011, 02:49 PM   #2
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bump for the day
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Old 09-11-2011, 02:53 PM   #3
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Very few of us have 427's. You might want to go to a ZO6 corvette forum.
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Old 09-11-2011, 02:55 PM   #4
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Originally Posted by Pollock View Post
Very few of us have 427's. You might want to go to a ZO6 corvette forum.
I think darth emma on here has a 427- could be wrong- maybe try and give her a pm!
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Old 09-11-2011, 06:03 PM   #5
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Why are you going with 1.75" headers instead of 2.0"? I would think that would be a bottle neck.
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Old 09-11-2011, 06:18 PM   #6
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Comparing a LS7 427 and an LS3 427 is apples and oranges when it comes to cams. Beyond that our cars are similar in weight as well and would be considered more comparable.

As far as the headers, its extra money that I'm just not currently investing at the moment. There are no 2.0" primary headers that are offered for the GTO in an off-the-shelf form.

I'll search for darth emma, thanks guys!
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Old 09-11-2011, 06:40 PM   #7
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Originally Posted by ITGuy11 View Post
Why are you going with 1.75" headers instead of 2.0"? I would think that would be a bottle neck.

My buddy had a ZO6 vette cammed and tuned by Lingenfelter. They put 1 7/8 Kooks headers on his car. He also dynoed 640 RWHP.
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Old 09-11-2011, 07:03 PM   #8
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There are probably less then 20- 427's on this site...

The other item is that most all of them are using one form of Forced induction or another... Head and intake selection need to be considered as well..

There are a number of vendors on here that will help you with your selection though... Lingenfelter, Texas Speed, etc...
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Old 09-11-2011, 11:06 PM   #9
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I was hoping to hear some experiences from owners rather than vendors. Calling is always a sales pitch and I wanted to avoid it, but I'll start tomorrow.

Thanks for the replies guys
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Old 09-11-2011, 11:09 PM   #10
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Have Pat G spec you out a cam. The one specced for my ls3 429 is in the 25x/26x range, .65x lift on a 110ls
Course I've got a ridiculous intake and 13.45:1 compression, too :p

Last edited by DietCoke; 09-12-2011 at 04:42 AM.
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Old 09-12-2011, 04:41 AM   #11
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Quote:
Originally Posted by briancb1 View Post
Sup guys

I searched around for my answer but nothing was very specific to my needs. I appreciate your help ahead of time.

I'm installing a 427 LS3 in my 06 M6 GTO in a few months. Im trying to find what cam specs are being used and what kind of power is being made to the wheels. Dyno graphs as well as your 427 setup is appreciated!

Build will be as follows:

TEA LS3 heads, LS3 intake (untouched), 90mm TB
4.070" flat tops with 11.2:1 compression
6.125 compstar rods
4.125" compstar crank
1.75" headers, 3" catless mids, will be a 3" exhaust


Im also up in the air about the FAST 102 or NW 102 setup, seems to give little power for practically $1400. Anybody dyno stock setup first before moving over to a 102/102 setup?

Thanks for all your help Camaro brothers.

Brian,

You do have a few restrictions to this engine that should be taken care of... The TB and headers are too small for a big power maker. Swapping to the 102 is a great idea. A set of American Racing headers 1-7/8" tubes as a minimum too. Nick can set you up with the right ones.

BTW - picking cam specs over the 'net is akin to Russian Roulette. The chances of getting the right one are slim.

Ed

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Old 09-12-2011, 08:59 AM   #12
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Give us a call I think we can help you spec something that will work really well with your application. We've built 670+ flywheel horsepower LS3 strokers so I think we'll have some data to help with your selection!
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Old 09-12-2011, 11:25 AM   #13
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Originally Posted by FTI-EDC View Post
Brian,

You do have a few restrictions to this engine that should be taken care of... The TB and headers are too small for a big power maker. Swapping to the 102 is a great idea. A set of American Racing headers 1-7/8" tubes as a minimum too. Nick can set you up with the right ones.

BTW - picking cam specs over the 'net is akin to Russian Roulette. The chances of getting the right one are slim.

Ed
I'm not picking cam specs, more like picking the vendor that seems to be doing the best. Ask 3 vendors to spec a cam and you will get 3 answers, all of them being "the best". I want to know what owners feel about it after the fact and are driving the car. I've been misled by a "professional" before and I want to avoid it, so I'm asking more questions this time round.

As far as the rest of the equipment, it will be here over time.
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Old 09-12-2011, 02:20 PM   #14
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Well the 427 isn't a new engine for us, if you need something custom ground I most certainly do not have an issue doing so.
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Old 09-13-2011, 10:51 AM   #15
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I think what separates TSP from all other shops is we have lots of engine dyno testing experience that helps us to develop camshafts not just off theories, but off actual side by side camshaft dyno testing.

Anyone can spec a camshaft & claim it to be the best. Crap without any measurable testing it probably is the best they've seen. If you only install one camshaft in a combination it automatically is the best camshaft a company offers for that engine. At TSP what we try to do is side by side test & develop camshafts for different combinations. The result is a camshaft we KNOW works in specific applications. When you test 10 camshafts next to each other you can better understand & spec a camshaft for a specific application.

That's what makes us the largest LS camshaft seller in the world.
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Old 09-13-2011, 10:56 AM   #16
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Dangeruss is having one built right now, might want to contact Russ. Matter of fact he has a build thread.

http://camaro5.com/forums/showthread...34#post3747834
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Old 09-13-2011, 11:01 AM   #17
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We work with Comp Cam's to do most of our testing and design work.

From there the cams are tested on the engine dyno and also in the car using real world durability testing from our own in house race cars and development cars.

Some things have to be tested on the cars, and other things like running the cams on a Spintron to make sure the valve train is stable at all RPM's have to be done in a lab. condition outside of the engine.
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