427 LS3 cam? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

briancb1 · 09-10-2011, 09:05 PM

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.

briancb1 · 09-11-2011, 02:49 PM

bump for the day

Pollock · 09-11-2011, 02:53 PM

Very few of us have 427's. You might want to go to a ZO6 corvette forum.

mike25 · 09-11-2011, 02:55 PM

Quote:

Originally Posted by Pollock

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!

ITGuy11 · 09-11-2011, 06:03 PM

Why are you going with 1.75" headers instead of 2.0"? I would think that would be a bottle neck.

briancb1 · 09-11-2011, 06:18 PM

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!

Pollock · 09-11-2011, 06:40 PM

Quote:

Originally Posted by ITGuy11

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.

*SSE 4 2SS* · 09-11-2011, 07:03 PM

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...

briancb1 · 09-11-2011, 11:06 PM

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

DietCoke · 09-11-2011, 11:09 PM

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

FTI-EDC · 09-12-2011, 04:41 AM

Quote:

Originally Posted by briancb1

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

Jason 98 TA · 09-12-2011, 08:59 AM

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!

briancb1 · 09-12-2011, 11:25 AM

Quote:

Originally Posted by FTI-EDC

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.

Anthony @ LG Motorsports · 09-12-2011, 02:20 PM

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.

09-10-2011, 09:05 PM	#1
briancb1 Drives: C6 Z06 Join Date: Nov 2010 Location: Houston TX Posts: 109	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.

09-11-2011, 07:03 PM	#8
SSE 4 2SS Boosted Moderator Drives: Bone Stock LS3 Join Date: Sep 2009 Location: Marion Tx Posts: 15,491	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... __________________ If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough...

09-11-2011, 11:09 PM	#10
DietCoke Slow Turtle Drives: 2011 1SS Join Date: Jun 2011 Location: Manhattan, KS Posts: 1,123	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 __________________ LSXOCET - 404rwhp @ 1600 lbs curb weight... bonkers fast https://www.facebook.com/lsxocet Last edited by DietCoke; 09-12-2011 at 04:42 AM.

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09-11-2011, 02:49 PM	#2
briancb1 Drives: C6 Z06 Join Date: Nov 2010 Location: Houston TX Posts: 109	bump for the day

09-11-2011, 02:53 PM	#3
Pollock LT4 M6 Drives: 2018 ZL1 1LE Join Date: Nov 2010 Location: Bloomington, IN Posts: 1,249	Very few of us have 427's. You might want to go to a ZO6 corvette forum.

09-11-2011, 06:03 PM	#5
ITGuy11 Burning up tires Drives: 2023 ZL1 Vert Join Date: Jul 2010 Location: Macomb Twp, MI Posts: 717	Why are you going with 1.75" headers instead of 2.0"? I would think that would be a bottle neck.

09-11-2011, 06:18 PM	#6
briancb1 Drives: C6 Z06 Join Date: Nov 2010 Location: Houston TX Posts: 109	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!

09-11-2011, 11:06 PM	#9
briancb1 Drives: C6 Z06 Join Date: Nov 2010 Location: Houston TX Posts: 109	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

09-12-2011, 08:59 AM	#12
Jason 98 TA Drives: Camaro Join Date: Apr 2009 Location: Texas Posts: 1,669	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!

09-12-2011, 02:20 PM	#14
Anthony @ LG Motorsports Drives: 1994 1LE / 2006 Z51 Corvette Join Date: Jul 2009 Location: Plano, TX Posts: 2,829	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.