CNC 243s on LS3

Reply Subscribe

Thread Tools

Search this Thread

01-23-2018, 11:08 AM

#41

NEstyle

Launching!

iTrader: (1)

Join Date: Sep 2016

Posts: 264

Likes: 5

Received 21 Likes on 20 Posts

Quote:

Originally Posted by 85Iroc

I don't have a 500 whp goal though. Actually my goal is to run 7.50 or quicker in the 1/8th mile.

I know, there was just some talk of hitting 500 whp with a cam earlier in the thread. Maybe with a solid roller and lots of RPM.

Reply Like

01-23-2018, 11:46 AM

#42

Darth_V8r

Moderator

iTrader: (4)

Join Date: Jul 2014

Location: My own internal universe

Posts: 10,452

Likes: 134

Received 1,852 Likes on 1,152 Posts

Quote:

Originally Posted by NEstyle

I know, there was just some talk of hitting 500 whp with a cam earlier in the thread. Maybe with a solid roller and lots of RPM.

I believe the official method would be something called "cam the living **** out of it and then rev to the moon"

Reply Like

01-23-2018, 11:53 AM

#43

G Atsma

TECH Senior Member

Join Date: Jun 2016

Location: Central Cal.

Posts: 21,448

Likes: 16,215

Received 3,245 Likes on 2,527 Posts

Quote:

Originally Posted by Darth_V8r

I believe the official method would be something called "cam the living **** out of it and then rev to the moon"

Gotta LOVE all this tech-talk..... lol

Reply Like

01-23-2018, 12:04 PM

#44

Marc 85Z28

TECH Fanatic

iTrader: (8)

Join Date: Sep 2005

Location: MD

Posts: 1,395

Likes: 0

Received 4 Likes on 4 Posts

What heat range spark plugs are you running?

Reply Like

01-23-2018, 01:05 PM

#45

85Iroc

TECH Apprentice

Thread Starter

iTrader: (12)

Join Date: Jul 2007

Location: Tn

Posts: 375

Likes: 0

Received 12 Likes on 4 Posts

Pretty sure they are TR6

Reply Like

01-23-2018, 01:15 PM

#46

Marc 85Z28

TECH Fanatic

iTrader: (8)

Join Date: Sep 2005

Location: MD

Posts: 1,395

Likes: 0

Received 4 Likes on 4 Posts

Header brand? Stock MAF?

Reply Like

01-23-2018, 02:13 PM

#47

85Iroc

TECH Apprentice

Thread Starter

iTrader: (12)

Join Date: Jul 2007

Location: Tn

Posts: 375

Likes: 0

Received 12 Likes on 4 Posts

Kooks 1-7/8. No cats. I do have them connected to the stock catback and have stock mufflers. Planning on getting electric cutouts. Yes, stock MAF.

Reply Like

01-23-2018, 02:26 PM

#48

A.R. Shale Targa

11 Second Club

iTrader: (2)

Join Date: Feb 2011

Location: Fredonia,WI

Posts: 3,729

Likes: 0

Received 15 Likes on 15 Posts

Quote:

Originally Posted by Darth_V8r

I believe the official method would be something called "cam the living **** out of it and then rev to the moon"

Fricken Sig. worthy right there.

Reply Like

01-24-2018, 11:52 AM

#49

Marc 85Z28

TECH Fanatic

iTrader: (8)

Join Date: Sep 2005

Location: MD

Posts: 1,395

Likes: 0

Received 4 Likes on 4 Posts

I had a similar issue with my G8 remote tuned through PatG. Spark knock only on WOT acceleration above 4000RPM and noticeable power loss. I was seeing 4-5° of knock retard. I couldn't find anything mechanically wrong (fuel trims, fuel pressure, ignition system, etc) and went through multiple retunes with Patrick. He saw nothing in the logs that stood out as a possible cause. In the end I replaced the stock MAF with a LS3/LS7 card style (retune for MAF) and swapped the stock ACDelco plugs for TR6s. That worked.

Reply Like

01-24-2018, 01:57 PM

#50

85Iroc

TECH Apprentice

Thread Starter

iTrader: (12)

Join Date: Jul 2007

Location: Tn

Posts: 375

Likes: 0

Received 12 Likes on 4 Posts

I haven't logged it to see exact rpm of knock retard but that sounds exactly like what mine is doing, above 4000 rpm.

Thanks for the heads up. I will try that asap. Where did you get your new MAF? Did you get PatG to retune or have it done locally?

Reply Like

01-24-2018, 02:03 PM

#51

NEstyle

Launching!

iTrader: (1)

Join Date: Sep 2016

Posts: 264

Likes: 5

Received 21 Likes on 20 Posts

This is where I got mine. All you need to do is switch the center two wires on the harness and get it tuned.

Amazon

Reply Like

01-26-2018, 10:43 AM

#52

Marc 85Z28

TECH Fanatic

iTrader: (8)

Join Date: Sep 2005

Location: MD

Posts: 1,395

Likes: 0

Received 4 Likes on 4 Posts

Quote:

Originally Posted by 85Iroc

Bought the ACDelco MAF and Spectre MAF housing on Amazon, around $60 for both. PatG sent an updated tune with the only changes being for MAF scaling. Whether it was the MAF or the plugs I can't say.

Reply Like

01-26-2018, 02:06 PM

#53

85Iroc

TECH Apprentice

Thread Starter

iTrader: (12)

Join Date: Jul 2007

Location: Tn

Posts: 375

Likes: 0

Received 12 Likes on 4 Posts

Quote:

Originally Posted by Marc 85Z28

Bought the ACDelco MAF and Spectre MAF housing on Amazon, around $60 for both. PatG sent an updated tune with the only changes being for MAF scaling. Whether it was the MAF or the plugs I can't say.

I already changed the plugs so I will try the MAF. I'm gonna do some other testing, compression, leak down, check injectors and coils, etc.

Appreciate the feedback.

Reply Like

01-27-2018, 07:30 AM

#54

85Iroc

TECH Apprentice

Thread Starter

iTrader: (12)

Join Date: Jul 2007

Location: Tn

Posts: 375

Likes: 0

Received 12 Likes on 4 Posts

Quote:

Originally Posted by Marc 85Z28

Bought the ACDelco MAF and Spectre MAF housing on Amazon, around $60 for both. PatG sent an updated tune with the only changes being for MAF scaling. Whether it was the MAF or the plugs I can't say.

Marc, what cold air kit do you have on your G8? I have a Vararam and I'm not sure I have it sealed off very well.

Reply Like