HOTROD98Z

iTrader: (1)

Hey this is my first post on ls1 tech, so im not real sure where this should be posted but anyways, i was watching one of the videos of the lg race car, i think its the grand am cup corvette, and i was wondering if anyone knows how they get the unique sound out of it, i know its an all out race car, but is it mainly the header design or the spinning of such high rpms or added cubic inches or all of it together. Any posts would be appreciated thanks

1998 camaro z28,loudmouth exhaust,k&n fipk, hypercoil springs,kyb shocks,lg stb,hurst billet plus,lous short stick

mitchntx

iTrader: (14)

I think it's header design and RPM.

Both sides dump on the passenger side into a single 6"(?) exhaust pipe.

It revs to 9K

It's freaking LOUD standing beside it ...

HOTROD98Z

iTrader: (1)

Do you know any of the specs of the engine cubic inches, cam size, heads etc.

NataSS Inc

iTrader: (9)

Our LS1's will never make that same type of sound. Biggest reason is that the motor in the LG vette is 306ci (if I remember right) and has around 13:1 or higher compression ratio with an insane cam through straight pipes for the most part. The motor is in the 600rwhp range in a car that is barely over 2500 pounds. Crazy fast car though.

HOTROD98Z

iTrader: (1)

What if you destroked our cars to a 302 like the one chevrolet made and turn high rpms. I wonder how that would sound with a big cam and open headers or a true dual exhaust. Do you know of any company that makes a kit to destroke our motors. I just think it would be bad to have a street car sound the way that thing does. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Neil 6.0

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by HOTROD98Z:
<strong>Do you know of any company that makes a kit to destroke our motors.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">You could use a crank from a 4.8L truck motor. It's stroke is 3.27". That would give you ~312ci.

Link to 302 Camaro:
http://www.camaroz28.com/articles/302camaro/index.shtml

Link to Westech Automotive:
http://www.westechauto.com/

<small>[ December 04, 2002, 04:29 PM: Message edited by: Neil 6.0 ]</small>

mitchntx

iTrader: (14)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by HOTROD98Z:
<strong>Do you know any of the specs of the engine cubic inches, cam size, heads etc.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I hope I get this right ... Louis hopefully will see this thread and add or correct my mistakes.

310ci when in Trans AM form, reving to 8800
358 when in Grand AM form, reving to 7500

CRD Engineering out of North Carolina is the engine builder. Not sure of the specifics on the cam or heads.

Why the engine revs so fast is because of the pancake size clutch!

I've had the pleasure and honor to "crew" for them while testing. I've also spent several hours prepping the car for a race.

HOTROD98Z

iTrader: (1)

Thanks for the info. do you know where in north carolina they are located, i actually live in north carolina and if they arent too far away i may end up taking a trip up their one day to check out their facility and services. Do you know if they are big into Ls1 tuning or buildups.

By the way have you ever got a chance to drive that beast.

Louis

iTrader: (7)

Ahhh...The Sound! Its Music to my ears!

Here is 2 links of it at the strip...who care what it ran, but that sound!

http://users3.ev1.net/~vettefolk/xtr...g_fsvt2001.wmv

http://users3.ev1.net/~vettefolk/xtr...fsvt2001_2.wmv

Where do I begin? Valve size/bore stroke/ ect I am not at liberty to reveal.

The 310 CID engine is what the 2 videos above have, Limiter @ 8200- mandated by the Trans Am Series. It has VERY lightweight internals, and the HP is ~ 592 to the tires.

the 358 is much beefier, heavier parts because it has to go the distance- 3hour, 6 hour, and even a 24 hour race. Imagine that <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> Its heavier over all, and has lots of lowend. It can be spun to 9k, but peak power is @ 7800 with the endurance cam in it. Cant make it last 24 hours spinning it to 9k <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

NOW, the exhaust setup is comprised of non-stepped 1 3/4 TRI-Y headers, dumping into a 3.5" collector. After that, each bank is then dumped into a single 5" Y pipe (Same size exhaust as a semi trailer <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> ) and one single exit out the passenger side <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Here is a Pic of the car belching flames at the Paul Revere 250 in July. We ended up winning that race <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />

<img src="http://www.grand-am.com/photo_images/prrace200-05.JPG" alt=" - " />

Here is the link to that page <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

HOTROD98Z

iTrader: (1)

Yes the sound is music to my ears too. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Also where is CRD Engineering located in North Carolina and do they do a lot of LS1 work.

Heres another question for you if you were to run a stroker LS1 of some sort 382 or possibly 422 or 427, and you ran a similar exhaust to what you are running would it have a similar tone to it.

Thanks for the info, your cars are insane

Louis

iTrader: (7)

CRD does NASCAR/Bush/truck/and Trans-am series stuff only. No ls1 stuff at all. No tuning either. Stricly a race car machine shop. Their shop rate is something rediculous too, ~ 200/hr. A Brand new, dynoed only engine for a nascar truck is ~48,000. yup, forty eight thousand dollars! And just think, It has to be rebuilt every 800 miles <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

Now, For the sound, Yes, you can make them come close to similar. Our cars always have that high pitched, 13k rpm sound to them <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Crazyquik

CRD is in Concord. What part of NC are ya in?

(704) 792-1955

J.

HOTROD98Z

iTrader: (1)

G2 LS1, thanks for all your information on your car. Do you have any more videos of this car you could post, if so i would appreciate it. <img border="0" alt="[hail]" title="" src="graemlins/gr_hail.gif" />

HOTROD98Z

iTrader: (1)

Crazyquik, I live in Brevard, its about 40 miles south of Asheville, I figured CRD was around the Charlotte area but wasnt sure.

mitchntx

iTrader: (14)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by HOTROD98Z:
<strong>
By the way have you ever got a chance to drive that beast.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I got to push it and steer it reaching through the window ... does that count? <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

There are videos out there of Lou taking a jaunt down a 1/4 mile drag strip running a 12.0@130 or something like that, nailing the brakes and turning in the first turn off (the Jr. Dragster turn off)

HOTROD98Z

iTrader: (1)

umm.... let me think, no i dont think that counts but it still must be awesome to even work on the car. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> I have a couple of the 1/4 mile videos, i was just wondering if there were any incar videos or videos of him racing in any of the races