LS to AMC rocker conversion

LS3 has one offset rocker. LS1, LS2 and LS6 are the right ones for this swap. But these rockers are 1.7:1 so that's the wrong direction to tame your cam.

  I think when this thread was started there weren't commonly available roller rockers for bridge rocker AMC heads.  The last couple of years Harland Sharp (and maybe others) have come out with rockers that are compatible.

  Your point is valid, though. 

Mike

Maybe. A set of Summit Racing house rockers with upgraded trunions is $260. Add $25 for stands. So yes, $285 is less than $625 for the Harland Sharp rockers. But in my opinion it only makes sense if you are replacing the valves with something 0.1 to 0.2" taller to correct the geometry.

There are other advantages. The LS rocker arms are lighter over the valve, have a 1.7:1 ratio, and the slipper shoe is more reliable than a roller tip.

Individual stud AMC HS Roller Rockers, would be an easier replacement, but cost more than the LS rockers.

The shaft system is good but expensive, but its nice to have it available for those that can use it. 

When John started this thread 10 years ago the choise was more limited and we were gratefull that he took the time to figure out how to use something cheap and high performance for our engines.