The Juggernaut

iTrader: (7)

Thank you.
<img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" />

Tally TransAm

iTrader: (17)

i just pulled the numbers in my sig with a 224 .581 on a 112 LSA

im a little disappointed with the numbers but very happy with the way the car performs

ryan

RAGEman

iTrader: (4)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tally TransAm:
<strong> i just pulled the numbers in my sig with a 224 .581 on a 112 LSA

im a little disappointed with the numbers but very happy with the way the car performs

ryan </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I bet the mid-length headers and the big, fat wheel/tire combo in the back is hindering you a bit...so you only picked up 2.2 peak RWHP and .7 ft.-lbs. with dyno tuning?

Tally TransAm

iTrader: (17)

yup

i think its a little mix between the big wheels/tires and headers as well

i might start looking into a jet hot/dual exhuast combo but i really need to stop spending money on my car

ryan

fast

iTrader: (24)

thanks for firing up this thread Sean, seems the replies here aren't much different than on mfba
what would I hope to gain w/ xe-R lobes over xe? (I'm considering the 224/581 and I don't wanna touch the heads, spent enough $ on cars already <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> ) it's for the 00 in sig (rolling on 315s, but I think the f1 stripes are worth something <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> )

XFiveLiter

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by fast:
<strong> what would I hope to gain w/ xe-R lobes over xe?
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Someone can correct me if I'm wrong, but w/stock heads the gains w/the XE-R would be minimal. Also, the fast ramps and higher lift beat the crap out of the valvetrain. <img border="0" alt="[punch]" title="" src="graemlins/gr_punch.gif" /> I didn't want to change valve springs every year.

<small>[ February 16, 2003, 09:18 AM: Message edited by: XFiveLiter ]</small>

The Juggernaut

iTrader: (7)

Xe-R lobes seem to make the most power.
I will have a custom XE-R grind.
(Depending on what happens with ESP)
Since I'm constantly modding the car,
*IF* I have to change the valve springs every
year,it's no big deal.

blazinredls1

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by RAGEman:
<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 Tally TransAm:
<strong> i just pulled the numbers in my sig with a 224 .581 on a 112 LSA

im a little disappointed with the numbers but very happy with the way the car performs

ryan </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I bet the mid-length headers and the big, fat wheel/tire combo in the back is hindering you a bit...so you only picked up 2.2 peak RWHP and .7 ft.-lbs. with dyno tuning? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Has ANYONE ever dynoed back to back cam cars with mac headers and a Good long tube header? I think alot of this header midlenth crap is heresay and i really would like to have some info to back up some peoples claims....

If there was any REAL info backing these claims i would ditch my macs and get a set of longtubes in a second, but i dont think its a issue..

Tally TransAm

iTrader: (17)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by blazinredls1:
<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 RAGEman:
<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 Tally TransAm:
<strong> i just pulled the numbers in my sig with a 224 .581 on a 112 LSA

im a little disappointed with the numbers but very happy with the way the car performs

ryan </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I bet the mid-length headers and the big, fat wheel/tire combo in the back is hindering you a bit...so you only picked up 2.2 peak RWHP and .7 ft.-lbs. with dyno tuning? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Has ANYONE ever dynoed back to back cam cars with mac headers and a Good long tube header? I think alot of this header midlenth crap is heresay and i really would like to have some info to back up some peoples claims....

If there was any REAL info backing these claims i would ditch my macs and get a set of longtubes in a second, but i dont think its a issue.. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">i plan on doing this by the end of march, im probably gonna switch out my mac/dynomouth combo for LT and duals

ryan

The Juggernaut

iTrader: (7)

LT headers will give you more low/midrange
torque.
Macs flow just as good in higher rpm range.

blazinredls1

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 01-Z:
<strong> LT headers will give you more low/midrange
torque.
Macs flow just as good in higher rpm range. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes, this is i know, but where are you racing?? Higher rpm range....

I know you would probally gain 3-8 probally somewhere,most of it lower range, but uptop what are we figuring, not to disrespect what rageman said at all.. What about midrange?

Pewter'00Z28

iTrader: (2)

Hey I have a 2000 Z28 A4 with 3.42's that put over 390 to the wheels, barely though <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> here' my graph.

http://www.vitazing.com/terry/dynoNA.jpg


Mods are:
SLP LT's
228/232 .558/.574 113LSA
Lid
Ported TB
MAF
MAFT 2% Lean
Free mods


It still has stock heads, and I still can add a ASP pulley, and actually tune the car <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

ROB'S SS

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Pewter'00Z28:
<strong> Hey I have a 2000 Z28 A4 with 3.42's that put over 390 to the wheels, barely though <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> here' my graph.

http://www.vitazing.com/terry/dynoNA.jpg


Mods are:
SLP LT's
228/232 .558/.574 113LSA
Lid
Ported TB
MAF
MAFT 2% Lean
Free mods


It still has stock heads, and I still can add a ASP pulley, and actually tune the car <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">wow, 390 hp. thats good. what does your car run in the 1/4?......off the bottle <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

RAGEman

iTrader: (4)

Hmmm. Interesting. My car put out 353 RWHP on the first of 3 pulls, and then 360 2 pulls later with absolutely nothing being changed, so I don't think a power increase of 5 RWHP or so is even measureable on the dyno unless your car's a lot more consistent than mine. However, I don't see how increasing the diameter AND length of the header primary wouldn't be worth at least a handful of horsepower even on a stock motor. I mean how could that NOT increase exhaust flow? As far as useable RPM's, well that's variable depending on your style of racing. If you only care about at the drag strip like me and launch between 5500 and 6K, and your RPM's never fall far below that, then, yeah, high-RPM numbers are all that matters. A lot of this depends on gearing, etc., but some people like for torque to be there down in the mid-range for street racing, or even roll-racing where you might need to use a higher gear for traction purposes.

blazinredls1

Not to hijack the thread rageman, all of ur points are noted, and belive everyone of them, but i havent sein any huge gains over motors with them that made me run out and get some LT... I want to see some cold hard proof before i invest in some LT, right now i have mac midlenths jet-hot coated with all welds ported, with everything done to them going to a dual 3" xpipe and its working Pretty good for my mild everyday driver....

RAGEman

iTrader: (4)

Oh, sure. I'm sure it works fine. I guess one of the main reasons I've always run longtubes is that even if the gain is minimal with a stock motor, EVENTUALLY, with heads/cam or with more cubes, you're gonna have to upgrade. I can almost guarantee you the guy in question will show an increase in peak RWHP with a swap to longtubes. It will be interesting to see.

AdrianSS225018

Just got this cam a month ago.224/224-581/581,slp long tubes and orp's,lid,maf,thermo 160*,borla w/adjustable q-tec...on a 99' SS 360RWHP..360RWTQ....but it pulls really hard. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />