About the reverse split fad
#1
About the reverse split fad
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.
#2
I can shift faster than you.
iTrader: (21)
Join Date: Nov 2001
Location: Baton Rouge, LA
Posts: 5,133
Likes: 0
Received 0 Likes
on
0 Posts
Re: About the reverse split fad
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
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
#3
TECH Senior Member
Join Date: Nov 2001
Location: Chi-Town, IL
Posts: 11,603
Likes: 0
Received 0 Likes
on
0 Posts
Re: About the reverse split fad
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" />
#4
TECH Enthusiast
Join Date: Jul 2002
Location: Houston, Tx
Posts: 716
Likes: 0
Received 0 Likes
on
0 Posts
#7
TECH Addict
iTrader: (1)
Join Date: Nov 2001
Location: Michigan
Posts: 2,161
Likes: 0
Received 0 Likes
on
0 Posts
Re: About the reverse split fad
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 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" />
Trending Topics
#9
TECH Fanatic
Join Date: Aug 2002
Location: Objects in mirror no longer matter.
Posts: 1,566
Likes: 0
Received 0 Likes
on
0 Posts
Re: About the reverse split fad
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.
#10
TECH Senior Member
iTrader: (2)
Re: About the reverse split fad
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.
#11
Re: About the reverse split fad
</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.
<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.
#12
Moderator
iTrader: (9)
Re: About the reverse split fad
</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..
<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..
#13
TECH Senior Member
Join Date: Nov 2001
Location: Chi-Town, IL
Posts: 11,603
Likes: 0
Received 0 Likes
on
0 Posts
Re: About the reverse split fad
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" />
#16
Re: About the reverse split fad
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" />
#17
On The Tree
Join Date: Mar 2002
Location: Plano, TX USA
Posts: 172
Likes: 0
Received 0 Likes
on
0 Posts
Re: About the reverse split fad
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..
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..
#18
Re: About the reverse split fad
</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.
<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.
#19
Re: About the reverse split fad
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