jim_tucker Posted November 18, 2008 Report Share Posted November 18, 2008 my friend has a set on 853 casting heads that are polished and have ls6 valve springs i believe. he told my he would give them to me because they are just laying around so i was going to swap them and sell my 317's so i would have money for a cam. are these good heads for a cam swap or are they better for FI setups? or are the 317's better? Quote Link to comment Share on other sites More sharing options...
skeet Posted November 18, 2008 Report Share Posted November 18, 2008 my friend has a set on 853 casting heads that are polished and have ls6 valve springs i believe. he told my he would give them to me because they are just laying around so i was going to swap them and sell my 317's so i would have money for a cam. are these good heads for a cam swap or are they better for FI setups? or are the 317's better? keep the heads you have, youre better off, get the other heads sell them off for 100.00 bux or so. save the rest, get the cam srpings and push rods, then later port your heads. Quote Link to comment Share on other sites More sharing options...
ss454327 Posted November 20, 2008 Report Share Posted November 20, 2008 From what I gather 317s are better for FI and the LS6 heads are better NA. Stock for stock you won't gain enough to make the swap worth it. Quote Link to comment Share on other sites More sharing options...
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