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Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

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Old 06-26-2002, 08:08 PM
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Default Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Finally got the car to a dyno today, I was very impressed because it was a hot day and I have no custom tuning just the HPP3 and MAFT. The numbers were 412.2 rwhp and 393 rwtq, there was a 1.02 correction factor so the corrected numbers are 420 rwhp and 400 rwtq. I think those are good baseline numbers especially when I'm running crappy 91 octane (California gas)with my 11.6:1 CR <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" /> . The cam feels very nice and sounds great, I've had almost no problems with the idle and I know the cam will make good power passed my now 6600 rpm rev limiter <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> . I was running rich the whole time, we leaned it out a little with the MAFT but I know this setup can really benefit from custom tuning via LS1 Edit. Oh BTW, mods are in sig and on web page, M6 with stock rear and 4.10's.

<small>[ June 27, 2002, 03:52 PM: Message edited by: SpeedDemonZ28 ]</small>
Old 06-26-2002, 08:15 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Tony,

Congrats on your UNTUNED #'s! It was hot today and the DA wasn't all that good, but those are still good numbers...I can't wait to see what that thing does with some tuning...

Joe
Old 06-26-2002, 08:20 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

man this some great numbers, congrats...
what are the specs of the heads?
with some tuning I am sure u gonna get alot more...
good luck
Old 06-26-2002, 08:30 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Dude that is awesome.. I am happy you finally got that monster to the dyno.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Any autotap runs? What was your timing..?
Old 06-26-2002, 08:34 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Those are some GREAT numbers??? Man i guess that guy from Andys Auto know WTF he is doing. Maybe i should take my car there. I heard his prices are really good too.
Old 06-26-2002, 08:51 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Vince, yes we did A-TAP the car, I don't remember the exact numbers of the timing but it could definitely use some more at WOT.
Old 06-26-2002, 09:06 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Congats!

Can you post the dyno graph? I'm curious where that lil' cam peaks. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

And do you have any info on the heads, flow numbers, valves, & how much they were milled?
Old 06-26-2002, 09:34 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

I would like a copy of your autotap run.. If you can send me a copy of the run..
Old 06-26-2002, 09:46 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Scott, I will post a copy of the dyno sheet within the next week, I'm moving right now and the scanner is packed up. The flow numbers I received from Andy's Auto Performance on the heads were 317@ .550 intake and 210@ .550 exhaust. I believe the valves are 2.02 intake/1.57 exhaust, for more specific info you may want to page AndysAuto in Western Memebers Forum. The cam was peaking a little lower than we expected according the sheet it peaks at about 6250 rpm. Vince, I will get a copy of the ATAP run for you I just need to get it from Mark @ Andy's.

<small>[ June 26, 2002, 09:51 PM: Message edited by: SpeedDemonZ28 ]</small>
Old 06-26-2002, 09:50 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Thanks.. Our setups are so similar.. I would like to compare Autotaps when I do mine next week.. I pick up my car tomorrow.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Old 06-27-2002, 12:04 AM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

How much are the heads milled and did you measure p/v clearance?
Old 06-27-2002, 11:06 AM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Onyx,

I believe that the heads were milled .050"....and the P/V clearance was .092"...hope this helps...

Joe
Old 06-27-2002, 11:09 AM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Also, I don't think that Tony mentioned that these numbers are not corrected and the correction factor I believe was 1.02, so corrected numbers would have been:

420/400

Joe
Old 06-27-2002, 11:11 AM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Nice torque!!!

Richard

<small>[ June 27, 2002, 11:12 AM: Message edited by: oxidizr ]</small>
Old 06-27-2002, 01:47 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Tony,
Whats happenin man! Very Nice Numbers. Those heads might be a lil magical <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> Where did u get dynoed at? Time for some 11's at Carlsbad <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Old 06-27-2002, 02:28 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

can you post a sound wave for this setup?
have you done anything to the pistons/rods?!?!
V/C issues??
Old 06-27-2002, 03:47 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

I think someone was there with a video camera, I don't know how the sounds quality was though. Joe might be able to get the video on here. Good point I should have posted the corrected numbers since everyone else does anyway, I'll edit my post <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> BTW stock rods and piston, haven't had any valve clearnace issues so far. Jack, we dynoed the car at Dynamic Performance in Lake Forest.

<small>[ June 27, 2002, 03:54 PM: Message edited by: SpeedDemonZ28 ]</small>
Old 06-27-2002, 04:39 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Sounds good. That is right in line with where my car was with the MMS Stage IIx and 229 Cam. Unfortunately it never made it to get tuned...
Old 06-27-2002, 04:47 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Looks good! Come race it at Irwindale tonight. I'm running the S10. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Old 06-28-2002, 10:10 PM
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Default Re: Dyno Numbers with 5.3 Heads & 227/227 .591/.591 113 LSA Cam

Looking again at your setup... I am not that far. You have better headers, cutout and some other things.. That would put you about 10rwhp more than me.. Thats about right.. I just wish I knew why my car peaked so soon..


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