jimmyz80

iTrader: (1)

I'm going to chime in here and inform Raj that Nick had an LS-1, know's the LS-1 well, and probably will have another LS-1. Much like myself <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

I think I can safely say if and when nick or I pick up a new LS-1, you'll be hard pressed to keep up with either of us <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by sununix69:
<strong>When you actually get an LS1, this will pertain to you.</strong>
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">

<small>[ April 11, 2002, 03:58 AM: Message edited by: jimmyz80 ]</small>

VAP

This might sound really stupid, but please educate me ! Why are all you guys still using such wide lobe centres ? Is it emissions ? Has anybody out there tried say ( hyd roller ) 240 @ .050" on both but with a narrower lobe centres say 108 ? Is it because the engine management can't be tuned ??? Once again please explain ?? Thanks <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

Nickn20

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by VAP:
<strong>This might sound really stupid, but please educate me ! Why are all you guys still using such wide lobe centres ? Is it emissions ? Has anybody out there tried say ( hyd roller ) 240 @ .050" on both but with a narrower lobe centres say 108 ? Is it because the engine management can't be tuned ??? Once again please explain ?? Thanks <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I don't think its not that the PCM cant be tuned for this, I just dont think we are there yet, and possibly some people have tried it and didnt find any gains over a smaller cam, sometimes bigger isnt always better. not sure though, it would be interesting to see some info about this, sounds like a cool all motor cam <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> I know it is for a old school, hehe.

VINCE

iTrader: (1)

I asked the same question about the 108lsa and I was told 2 things.. PCM programming and vacuum would be a big issue...

Patrick G

iTrader: (14)

Stay tuned, I will be testing out a more radical Thunder Racing reverse split cam in about two weeks: 230/224, 111LSA. I will do a back to back dyno comparison against my excellent TR224 112LSA cam and report back.

Patrick

CHRISPY

With big duration numbers the biggest factor besides having to turn relatively high rpms to see the power (Depending on LSA) is Piston to valve clearance.
Cheers,
Chris

CHRISPY

sweet!! I cant wait to hear the results <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Cheers,
Chris

HP-GURU

We are awaiting your results Patrick G!!! So with the 111LSA the exhuast will be opening and closing a bit later than with a wider LSA. Means that when air gets moving there's going to be quite a bit of air exchange btw the exhaust and intake side.

Definately will pack your cyllinders. Ensure you have no knock retard because when the air gets moving you are going to have alot of dynamic cyllinder pressure.

Also ensure valve train geometry is spot on.

If you have another result like these guys where low end tq is not negatively affected at all and high end HP is up, you have a win/win proposition.

CHRISPY

HP-GURU
Do you think a wider LSA would be more beneficial in this case?
I was considering the same setup on a 112-114LSA but will go to a 112LSA if it makes more power.
I am not positive on the effects of LSA with a reverse split pattern cam.
Thanks,
Chris

XtraCajunSS

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tim98TA:
<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 XtraCajunSS:
<strong>Well we've just about got it down to an art... <img border="0" alt="[devil]" title="" src="graemlins/gr_devil.gif" /> TATER!!!</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Shane did you bring in the jam box to crank up the "Oldies but Goodies"? HAHAHAHA

Tim</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Nope, Geoff stole the CD... Dammit! <img border="0" alt="[guns]" title="" src="graemlins/gr_guns.gif" />

HP-GURU

I think the reverse split will allow you to tighten down on the LSA with less detrimental impact on low speed tq.

YOu'd imagine tq anywhere is determined by cyllinder fill and more cyllinder fill == more cyllinder pressure.

XtraCajunSS

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Patrick G:
<strong>Stay tuned, I will be testing out a more radical Thunder Racing reverse split cam in about two weeks: 230/224, 111LSA. I will do a back to back dyno comparison against my excellent TR224 112LSA cam and report back.

Patrick</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well TATER- AKA Jason99T/A, looks like we're doing another swap... <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

XJGPN

This cam was tested on a car with stock heads correct? What is the general thought of how this might work with a good set of ported heads? The reason I wonder is that once the intake is opened up, will the bias towards the intake still be necessary?

CHRISPY

If the port job increases flow proportionatly intake and exhaust yes it will still help. Also at higher flow numbers the intake is a greater restriction than before.
cheers,
Chris

98SS#2018

iTrader: (-1)

One question that I didn't see anyone ask... How does it sound? Does it sound like a regular split cam? As in big lope? I know this is trivial, but I'm just curious....

Jason

Jason99T/A

iTrader: (21)

Yes, the the was tested with stock heads. We do not know how the cam will react to ported heads, but we feel it will show even greater gains as Chris pointed out.

The cam does have a slightly harsher idle compared to the 224/224, but nothing really too different. The TR224 cam idled too good for my tastes anyways, so a little more lope was a good thing. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> I haven't noticed any difference in driveability, though.

<small>[ April 14, 2002, 04:49 PM: Message edited by: Jason99T/A ]</small>

Z00

I just ordered this cam and will be putting it on my car with ported heads hopefully the first of may. I'll let everyone know how it goes.

Jason99T/A

iTrader: (21)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Z00:
<strong>I just ordered this cam and will be putting it on my car with ported heads hopefully the first of may. I'll let everyone know how it goes.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I know you will enjoy the cam! What ported heads will you be installing? Let us know how it turns out.

Z00

I got my heads ported by rrheads.com He's running them on his with hotcam and stock valves. He runs almost 120 in the quarter. Mine are a little different though because I have 6.0L truck heads and they are ported for when I want to put the turbo on.

Amarillo3

If there is less KR with the 230/224 111 lsa - can you run higher compression? I remember reading that the SAM car, last year, was running higher compression than most because of the efficiency of their heads. So I'm just thinking that with a biased cam matbe I could run a little more compression to inch out a few more ponies.