CNC 243s on LS3

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Jan 23, 2018 | 11:08 AM

#41

NEstyle

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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.

Jan 23, 2018 | 11:46 AM

#42

Darth_V8r

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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"

Jan 23, 2018 | 11:53 AM

#43

G Atsma

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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

Jan 23, 2018 | 12:04 PM

#44

Marc 85Z28

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What heat range spark plugs are you running?

Jan 23, 2018 | 01:05 PM

#45

85Iroc

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From: Tn

Pretty sure they are TR6

Jan 23, 2018 | 01:15 PM

#46

Marc 85Z28

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Header brand? Stock MAF?

Jan 23, 2018 | 02:13 PM

#47

85Iroc

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From: Tn

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.

Jan 23, 2018 | 02:26 PM

#48

A.R. Shale Targa

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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.

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Jan 24, 2018 | 11:52 AM

#49

Marc 85Z28

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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.

Jan 24, 2018 | 01:57 PM

#50

85Iroc

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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?

Jan 24, 2018 | 02:03 PM

#51

NEstyle

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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

Jan 26, 2018 | 10:43 AM

#52

Marc 85Z28

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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.

Jan 26, 2018 | 02:06 PM

#53

85Iroc

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From: Tn

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.

Jan 27, 2018 | 07:30 AM

#54

85Iroc

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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.