Don't turn this into a flame war. These new fangled monster reverse split cams have been out for awhile now. They do seem to dyno high (so what) and make good power. And, I do understand the logic of them matching with the flow of the LS1 head. But, they do not seem to have an advantage on the track. All I can go by is the list in the drag section. The fastest LS1's are running single patterns, with a few regular splits in there. The reverse splits don't seem to even be in the ballgame. There has been time to sort out tuning issues. What's up with them, why are they so hot? Surely something other than high dyno #'s.

 

See sig... not too bad for stock heads.

Also note that the track runs were made with the y-pipe in place. The car dynoed 399/38x like that. I only got one pass that night since my torque arm broke on the next pass. The car easily had a 11.1x in it, if not a little better.

http://members.***.net/jason99ta/jason99ta1125.wmv

 

Raughammer just took his N/A 346 car to another 10.6 with an X1 cam, same cam I used to have.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

http://www.ls1info.com/print.php?sid=259

Thought it might help...

 

I got a reverse split, not huge but....

228/224 <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

seems ok <img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" />

 

Raughammer also went 10.6 w/a hammer cam too.
Whats your point?

JS

 

Good point. Track times can depend on so many things.

"I got a reverse split, not huge but....
228/224 <img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" />

On a Turbo, it's probably gonna help alot. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

 

I don't think they are a fad...the more and more we use them the more and more we like em!

 

Add a few more degrees intake duration to those already fast single pattern heads cam cars out there and I bet they would pick up.

 

now i hear that this works (and yea i believe in the bigger split duration like raging motorsports) because of the restrictive intake manifolds, but i say it has a lot to do with the amazing flow characteristics of the ls1/6 head's exhaust ports, even next to the great intake port design. now when you port them it gets even better.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by gator's 99TA:
<strong> now i hear that this works (and yea i believe in the bigger split duration like raging motorsports) because of the restrictive intake manifolds, but i say it has a lot to do with the amazing flow characteristics of the ls1/6 head's exhaust ports, even next to the great intake port design. now when you port them it gets even better. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yeah, I understand the theroy of why reverse splits are good for LS1's. And, the guys who posted above have impressive times. I'm not putting down anyone. It just seems to me that the single patterns (in general) are putting out more power to the ground. Not alot more, but a clear advantage overall. I wonder why someone would choose a, say, 230/226 when a 226/226 would look to give equal or better track times, and probably run smoother. Just trying to see if I'm missing something here. That's all.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 11 Bravo:
<strong>Yeah, I understand the theroy of why reverse splits are good for LS1's. And, the guys who posted above have impressive times. I'm not putting down anyone. It just seems to me that the single patterns (in general) are putting out more power to the ground. Not alot more, but a clear advantage overall. I wonder why someone would choose a, say, 230/226 when a 226/226 would look to give equal or better track times, and probably run smoother. Just trying to see if I'm missing something here. That's all. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Lets think about this a little more.. Do you see more standard split cams or single pattern cam cars making the numbers (Both track and Dyno) because the newer reverse split is less popular because of its new design?

I bet if you were to ask how many standard splits/single pattern cams were in cars vrs reverse split, you would have your answer.. I bet it is probably a 1 to 10 ratio (Or more) in the standard splits/single pattern favor..

 

The whole reverse split thing I think was more of an experimentation type of deal...not a lot of people had them, I heard some good things about them, and thats why I decided to try one.. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

I have a question about this for the guys with smaller cams. If you have a 220/220 cam and decided to go with a 224/220, wouldn't you gain more from a 224/224 or am I wrong?

 

Let's see if we can figure out what people have..


https://ls1tech.com/ubb/ultimatebb.p...c;f=1;t=010399

 

That poll should be interesting. It may prove me wrong, but most of the posts about cams, dyno#'s, and just general discussion about cams in the last 6 months or longer seem to revolve about reverse splits. Yet, they really haven't made it into the list of the fastest track times. Heck, the fastest cam only LS1 (in the 10's) is running the same smallish 226/226 I have. Would he go faster w/ a big reverse split? I don't know but would bet not from the results I've seen on this site. And, once again, that is all I really have to go by. If I'm wrong, I would not hesitate to get a reverse <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

It has been in my experience that although reverse splits may not be in the fastest 1/4 mile group - they are killing everything else on the street races (more like highway races). As I have seen nothing but reverse splits put a whoopin on everything else from a 40/60-120 MPH roll..

Now in 1/4 times you have to get a good launch and have descent driving skills to get the "best time" no matter WHAT HP you are making..

And when you race on the highway from a roll - then punch it and see who walks away - thats a whole different race. Granted that race lacks the skils - BUT - I have seen reverse splits come out on top all night long and in my opinion makes a great argument for them....

Just my two cents..

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by bparker:
<strong> It has been in my experience that although reverse splits may not be in the fastest 1/4 mile group - they are killing everything else on the street races (more like highway races). As I have seen nothing but reverse splits put a whoopin on everything else from a 40/60-120 MPH roll..

Now in 1/4 times you have to get a good launch and have descent driving skills to get the "best time" no matter WHAT HP you are making..

And when you race on the highway from a roll - then punch it and see who walks away - thats a whole different race. Granted that race lacks the skils - BUT - I have seen reverse splits come out on top all night long and in my opinion makes a great argument for them....

Just my two cents.. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That is something I was wondering about. Anyone else agree? If that is true of reverse splits then maybe I should consider them. Most of my races are from a roll.

 

One thing everyone seems to be forgetting is, the reverse split guys are usually running a 2.02 intake valve where others are running slightly bigger (2.050)with the regular split. So in a sense both guys are doing the same thing but in different ways

 

WHat part of the cam affects drivability
the intake or the exhaust
say is a 226/220-114 more street freindly then a 220/226-114?
how would that compare to a cam in the middle like a 224/224-114?