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G5x2 guys where do you peak/shift?

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Old Jul 22, 2003 | 07:50 PM
  #1  
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Default G5x2 guys where do you peak/shift?

just wondering if this is an ultra high revving cam like it seems. also i cant seem to find any dyno graphs so if anyone has some i'd love to see em
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Old Jul 23, 2003 | 03:18 AM
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Default Re: G5x2 guys where do you peak/shift?

Cam typically peaks @6400, and most folks seem to be shifting @6500.

Considering its size, it's not really that high-revving of a cam.
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Old Jul 23, 2003 | 06:33 AM
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Default Re: G5x2 guys where do you peak/shift?

I have my shift light set at 6500rpm as BurnOut mentioned.

Dyno sheet:
http://web.ics.purdue.edu/~lgigliot/cam/447dyno.jpg
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Old Jul 23, 2003 | 07:52 AM
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Default Re: G5x2 guys where do you peak/shift?

Same here. Shift light @ 6500, and rev limiter @ 6800.
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Old Jul 23, 2003 | 08:54 AM
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Default Re: G5x2 guys where do you peak/shift?

my rev limiter is set @7000....But my shift light will be set at @6500...Like they said it peaks at 6500..
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Old Jul 23, 2003 | 09:21 AM
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Default Re: G5x2 guys where do you peak/shift?

Same here, rev limiter is set at 6800 and shiftlight comes on at 6500.
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Old Jul 23, 2003 | 10:45 AM
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Default Re: G5x2 guys where do you peak/shift?

Looking at that 447rwhp dyno graph you need to be shifting higher than 6500rpm. Have you tried shifting at 7k? I imagine you would pick up a MPH or 2 and lose some ET.
Phillip
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Old Jul 23, 2003 | 11:35 AM
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Default Re: G5x2 guys where do you peak/shift?

mine is set at 7K rev limit and i shift 68-6900 NA and on spray. in a few weeks i am going to try short shifting at 64-6500 just to see the effects on bottle and NA.. NA i am seeing 120-121 traps... thought i would see a few more mph. but i am not speed shifting so that is affecting it.. but i am seeing 135.xx traps on spray..

Wes
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Old Jul 23, 2003 | 11:56 AM
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Default Re: G5x2 guys where do you peak/shift?

Damn guys!!

Nice #'s!!

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Old Jul 23, 2003 | 01:42 PM
  #10  
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Default Re: G5x2 guys where do you peak/shift?

Looking at that 447rwhp dyno graph you need to be shifting higher than 6500rpm. Have you tried shifting at 7k? I imagine you would pick up a MPH or 2 and lose some ET.
Phillip
You are right...when I shifted around 6700-6800 rpms (close to the rev limiter of 6900 rpm) my MPH in the 1/8 was about 1 MPH higher. I didn't notice much difference in ET.
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Old Jul 23, 2003 | 02:17 PM
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From: Jersey boy
Default Re: G5x2 guys where do you peak/shift?

wow, i like what i'm hearing and that dyno graph looks awesome.
CamM, did you have any problems with PTV clearance on those 5.3 heads?
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Old Jul 23, 2003 | 02:57 PM
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Default Re: G5x2 guys where do you peak/shift?

uhm, question, how high should I let it rev on stock internals??
-Steve
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Old Jul 23, 2003 | 04:45 PM
  #13  
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Default Re: G5x2 guys where do you peak/shift?

wow, i like what i'm hearing and that dyno graph looks awesome.
CamM, did you have any problems with PTV clearance on those 5.3 heads?
Thanks!!
My pistons were flycut at LGM motorsports since I'm running 11.2:1 compression with the 5.3L heads milled at aprox .020 (I think).
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Old Jul 23, 2003 | 05:57 PM
  #14  
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From: Jersey boy
Default Re: G5x2 guys where do you peak/shift?

is lg a sponsor here? i dont see thier banner on the right. i went to lgmotorsports.com but didnt see any mention of the cam on there so i dont know if thats the right site. does anyone have a link? this sounds like an awesome cam but i cant seem to find it
also, has anyone broken parts on the bottom end with this cam yet and would it be a good idea to get some pistons/rods if/when (probably when) the cam goes in?
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Old Jul 23, 2003 | 06:58 PM
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Default Re: G5x2 guys where do you peak/shift?

camm- so what did it do at the track?, let us know with 60ft mph and d.a. also your wieght. to me it looks like the car made 450 at 6500 and was still climbing. do you have a dyno run going past 6500. for such a big cam it makes great mid range power
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Old Jul 23, 2003 | 07:38 PM
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Default Re: G5x2 guys where do you peak/shift?

That is the right website, just a little slow on the info.

If you would rather call toll free, you could get more info- 1877-LGMOTOR
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Old Jul 23, 2003 | 08:00 PM
  #17  
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Default Re: G5x2 guys where do you peak/shift?

I launch at 7k,shift at 6900.
But what do I know?My car is slow.
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Old Jul 23, 2003 | 10:02 PM
  #18  
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Default Re: G5x2 guys where do you peak/shift?

I would throw in good rod bolts before revving consistently to 7000rpm

From the look of the graph a 6700 shiftpoint should be ideal.
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Old Jul 23, 2003 | 10:11 PM
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Default Re: G5x2 guys where do you peak/shift?

I shift at 6700 also

PS...dont listen to 01Z he is the devil talking..lol....

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Old Jul 23, 2003 | 11:25 PM
  #20  
ne14a6t9's Avatar
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From: bronx ny
Default Re: G5x2 guys where do you peak/shift?

01-z if your car is slow, I wish my car was as slow, its good to see you list 60ft and d.a. with your times but what is your race wieght. this g5x2 cam really runs good.
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