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New 4.8 vs. 5.3 post

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Old Apr 10, 2003 | 01:00 AM
  #12  
GoldenVelvet's Avatar
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Default Re: New 4.8 vs. 5.3 post

OK let me bust out my big autobrain math.. If I may..

HP X RPM / 5252 = Tq

Tq X 5252 / RPM = HP

That is why the power and torque often cross right at 5252RPM.

Despite what I said the the "High Reving" post.

Big is better!! (almost always.)

P.S. Thunder 2k1 you have mail.

<small>[ April 10, 2003, 01:17 AM: Message edited by: GoldenVelvet ]</small>
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Old Apr 10, 2003 | 07:47 AM
  #13  
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Default Re: New 4.8 vs. 5.3 post

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Thunder 2k1:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BigTex:
<strong> My Opinion: The whole idea that torque is a bad thing is stupid. (originally posted my Thunder 2K1 in the old post) </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">ok buddy, the next time u wanna label me saying something that is false think again</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It seems that you are the one doing all the "labeling" on these threads. I said the "idea" is stupid, nothing against you personally.


</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Thunder 2k1 in the old post:
<strong> to that idiot that said more torque does not = less traction. how do u figure? the car with more torque is obviously gonna lose traction more </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Everyone else - sloverado, red2k, and whoever else is going to jump in, keep this thread civil please.
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Old Apr 10, 2003 | 08:02 AM
  #14  
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Default Re: New 4.8 vs. 5.3 post

<img border="0" alt="[angel]" title="" src="graemlins/gr_angel.gif" /> no use even starting in. help me with my pics of my truck there BIGTEX
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Old Apr 10, 2003 | 08:09 AM
  #15  
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Default Re: New 4.8 vs. 5.3 post

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">he was rollin 20s also but that doesnt make that much of a difference</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Rolling mass impacts ET about twice as much as static mass. If your wheels/tires weigh 100 lbs more, the result at the track is like adding 200 lbs to your truck. Why do you think the drag racers all put lightweight wheels and tires on?

Lightweight wheels/tires also affect dynojet numbers FYI.

Tony
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Old Apr 10, 2003 | 08:21 AM
  #16  
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Default Re: New 4.8 vs. 5.3 post

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Nine Ball:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">he was rollin 20s also but that doesnt make that much of a difference</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Rolling mass impacts ET about twice as much as static mass. If your wheels/tires weigh 100 lbs more, the result at the track is like adding 200 lbs to your truck. Why do you think the drag racers all put lightweight wheels and tires on?

Lightweight wheels/tires also affect dynojet numbers FYI.

Tony </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">My billet 20's weigh much less than the factory steel wheels that I had. I actually dropped a couple of tenths when I threw the 20s on there.

As for 4.8 vs. 5.3--my modded '01 4.8 is about 3-5 tenths slower than my buddy's bone-stock '02 5.3. And, my 4.8 would turn the tires over quite easily, thank you very much! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Old Apr 10, 2003 | 05:36 PM
  #18  
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Default Re: New 4.8 vs. 5.3 post

Ok, I have a theory here that might make everyone happy? I'm gonna use Scream as an example ( <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> ). He has a 01 RCSB 2wd 4.8 A4 with 3.42's and some bolt ons and I have the same set up except it's a stock 02 with a 5.3. I've got him beat by about 3 to 4 tenths in the 1/8 and 2 to 3 tenths in the 1/4, but our MPH is EXACTLY the same in the 1/8 and 1/4. So that leads me to believe that we are generating the same amount of top end HP, it's the low end is where the difference is.

Can Scream beat me? YEAH! Let's say we're street racing from a stop light. The light turns green and I instantly hammer the throttle to the floor which ignites my tires into a blaze of glory. Scream takes off like he has some sense, and I have no hope of running him down because I just lost my only advantage - that torquey hole shot. <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" />

All things being equal the 4.8 is weaker than the 5.3 which is weaker than the 6.0. Can a 4.8 beat a 5.3? Yup, but as a general rule the 5.3 wins because HP/TQ is king.

I do get traction on the street with the 5.3, when I want to that is! <img border="0" alt="[evil]" title="" src="graemlins/gr_devil.gif" />
<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
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Old Apr 10, 2003 | 06:04 PM
  #19  
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Default Re: New 4.8 vs. 5.3 post

i cant believe someone is saying good things about the 4.8L.... crackpipes ARE evil
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