Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

.544/.545(lift) Cam. Use 1.8RR's to improve lift?

Old 03-03-2010, 09:16 PM
  #1  
Launching!
Thread Starter
iTrader: (22)
 
lower_the_dynamite's Avatar
 
Join Date: Nov 2005
Location: Syracuse,NY
Posts: 235
Likes: 0
Received 11 Likes on 8 Posts

Default .544/.545(lift) Cam. Use 1.8RR's to improve lift?

I just bought a car with a Lunati cam 234/236 .050 .544/.545 112 LSA
cam in it. The car does have:

Patriot gold .650 valve springs
titanium locks and retainers
Ported 241 heads 2.02 / 1.94 valves
Forged 346 Bottom end

I was thinking instead of swapping the cam out I would go for a 1.8 rocker to help the lift. I'm at the point now I may swap the cam for something bigger or keep what I have and see what I can do with it adding 1.8's. I'm very new to the LSx world and would like some thoughts. Thanks in advance.
Old 03-03-2010, 09:57 PM
  #2  
TECH Apprentice
iTrader: (17)
 
Lambert695's Avatar
 
Join Date: May 2009
Location: Denver
Posts: 313
Likes: 0
Received 0 Likes on 0 Posts

Default

I think the 1.7 rockers are more stable.. I would just stick with the stockers.. thats my opinion. I just dont think with that cam and heads you wont see many gains from the 1.8.. I could be wrong though
Old 03-03-2010, 10:33 PM
  #3  
Staging Lane
iTrader: (9)
 
superchargedgp's Avatar
 
Join Date: Dec 2008
Location: Chicagoland IL
Posts: 98
Likes: 0
Received 0 Likes on 0 Posts

Default

it would give you .576/ .577 lift

i say go for it, if you can get them cheap enough
Old 03-04-2010, 02:21 AM
  #4  
ЯєŧąяĐ Єl¡m¡иąŧøя ™
iTrader: (18)
 
orangeapeel's Avatar
 
Join Date: Nov 2004
Location: Justin, TX
Posts: 16,083
Likes: 0
Received 4 Likes on 4 Posts

Default

That cam sure does have some weak lifts for that mildly aggressive duration. It must be like Lunati's version of the hot cam.
Old 03-04-2010, 02:22 PM
  #5  
Launching!
Thread Starter
iTrader: (22)
 
lower_the_dynamite's Avatar
 
Join Date: Nov 2005
Location: Syracuse,NY
Posts: 235
Likes: 0
Received 11 Likes on 8 Posts

Default

Is there an off the shlef cam that would work well with the spings/heads that I have I could install? I don't mind shifting to the moon since it's a M^ car with what will be a 4.10 or 4.30 gear. Thanks.
Old 03-04-2010, 02:33 PM
  #6  
Moderator
iTrader: (11)
 
jimmyblue's Avatar
 
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,605
Likes: 0
Received 6 Likes on 6 Posts

Default

What do you know about those ported heads' flow
vs lift characteristics? Would more lift help at all?
Some curves I've seen for 241s seem to stall out
well below 0.6". Of course this comes down to the
port job, so you want to know particulars I think.
Old 03-04-2010, 02:34 PM
  #7  
TECH Apprentice
iTrader: (6)
 
01SS99red's Avatar
 
Join Date: Oct 2009
Location: Chicago
Posts: 308
Likes: 0
Received 1 Like on 1 Post
Default

You should look into some of Speedinc comp cam grinds if your going to use a 4.30 gear I would go with their SI6 cam make awesome power up top
Old 03-04-2010, 03:47 PM
  #8  
Launching!
Thread Starter
iTrader: (22)
 
lower_the_dynamite's Avatar
 
Join Date: Nov 2005
Location: Syracuse,NY
Posts: 235
Likes: 0
Received 11 Likes on 8 Posts

Default

Originally Posted by jimmyblue
What do you know about those ported heads' flow
vs lift characteristics? Would more lift help at all?
Some curves I've seen for 241s seem to stall out
well below 0.6". Of course this comes down to the
port job, so you want to know particulars I think.
I don't know a thing about the heads. I would have to take the "Best Guess" of what they flow and go from there. Might not want to buy anything unless I know what they are to begin with. I appreciate the input.
Old 03-04-2010, 04:18 PM
  #9  
11 Second Club
iTrader: (2)
 
fastvet's Avatar
 
Join Date: Dec 2007
Location: !!!!TEXAS!!!!
Posts: 588
Received 0 Likes on 0 Posts

Default

Put the SLP 1.85's if you can find them cheap. I had some on when I had a mild cam in my car. 216/224 .551/.551 115LSA It bumped the Lift up to .599/.599. I thought it helped. Ofcourse after the cam swap I got one with a high lift so the use of those rockers were no good. But to save you trouble from taking out the cam, Just put the rockers on. Those Patriot Gold springs should hold it.
Old 03-09-2010, 04:40 AM
  #10  
ЯєŧąяĐ Єl¡m¡иąŧøя ™
iTrader: (18)
 
orangeapeel's Avatar
 
Join Date: Nov 2004
Location: Justin, TX
Posts: 16,083
Likes: 0
Received 4 Likes on 4 Posts

Default

He is gonna be pulling the rockers off either way. might as well do the cam and not mess with the stock geometry.
Old 03-09-2010, 08:02 AM
  #11  
TECH Junkie
iTrader: (33)
 
LS1-450's Avatar
 
Join Date: Aug 2005
Posts: 3,783
Likes: 0
Received 9 Likes on 8 Posts

Default

Originally Posted by lower_the_dynamite
I just bought a car with a Lunati cam 234/236 .050 .544/.545 112 LSA
cam in it. The car does have:

Patriot gold .650 valve springs
titanium locks and retainers
Ported 241 heads 2.02 / 1.94 valves
Forged 346 Bottom end

I was thinking instead of swapping the cam out I would go for a 1.8 rocker to help the lift. I'm at the point now I may swap the cam for something bigger or keep what I have and see what I can do with it adding 1.8's. I'm very new to the LSx world and would like some thoughts. Thanks in advance.

Yes, it can be done. As noted, there are several other options, as well.
Old 03-09-2010, 08:55 AM
  #12  
TECH Fanatic
iTrader: (26)
 
Michael02hawk's Avatar
 
Join Date: Feb 2005
Location: Rochester, NY
Posts: 1,155
Likes: 0
Received 1 Like on 1 Post
Default

Its my opinion, that most aftermarket cams are designed to run with a stock ratio of 1:70 rocker arms. Few cam are designed to run 1.8 or either.

If you really don't know what the heads are, I'd find out! There is a world of difference from a crap set of heads vs. a performance head.

So my 2 cents is to stick with stock ratio rockers arm, and pick or order a custom cam to fit your goals.

Better yet, figure out your heads first. You might be happy with this cam, rocker set and with a different set of heads.

Let us know.
Old 03-09-2010, 11:37 PM
  #13  
ЯєŧąяĐ Єl¡m¡иąŧøя ™
iTrader: (18)
 
orangeapeel's Avatar
 
Join Date: Nov 2004
Location: Justin, TX
Posts: 16,083
Likes: 0
Received 4 Likes on 4 Posts

Default

Yes, if you upgrade the rockers hold onto that stock ratio.


Thread Tools
Search this Thread

All times are GMT -5. The time now is 12:17 AM.