cam or ls6 manifold which 1st?
<strong>the ls6 manifold only gives a 5 rwhp gain doesn't seem worth it. Is the 224/224 112lsa 581 581 a good choice?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I think the 224 XE-R is an excellent choice, with heads. I don't think the .581 lift is necessary with stock heads. I don't think the .581 lift will gain anything over the TR-224's .561 lift on stock heads. The 981 springs will work but you'll need to change them more often to be safe. The Rev duals for unmachinced heads have gotten mixed reviews. I think for the XE-R cams it's very wise to run dual springs, otherwise your asking for trouble later on.
If your going to keep stock heads, I'd go with a TR-224 or TR-220 or Hammer/C1/Go Fast T/A 222/222 XE cam.
either way both those mods work off each other.... you will end up needing both for peak HP... cams like air and and open exhaust <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
TR224 cam is a great choice... but for a M6 112 is a nice LSA! 114 for autos
also look into getting LS1 edit if you are going the cam route. Its worth the money
<strong>WILL THE 581 LIFT HURT WITH STOCK HEADS AND HOW MUCH MORE ABUSE DOES IT DO COMPARED TO THE 561 LIFT? HOW ABOUT A SPLIT DURATION/LIFT CAM WHICH IS BETTER.I HOPE TO DO HEAD MODS IN THE FUTURE PROB ABOUT A YR OR SO. THANKS</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Long as the 918's hold up I doubt the extra lift will hurt anything but the extra lift isn't going to gain you anything either with stock heads. If your going to ported heads later and willing try it go for it.
Here are a few more threads that might be of interest. Note in one of the threads someone made 397rwhp with a .525 lift cam and stock heads.
https://ls1tech.com/ubb/cgi-bin/ulti...c;f=1;t=005067
https://ls1tech.com/ubb/ultimatebb.p...1;t=006697;p=2
https://ls1tech.com/ubb/ultimatebb.p...=007679#000002
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