So everyone knows how loud the LS motor valve train noise is. Easy way to quiet it down is the Harland sharp rocker upgrade, this is where they replace the needle bearings with a bushed insert. Its like a night and day difference, plus you don't have to worry about the needle bearings failing. Here are a few pics of the upgraded rockers vrs stock ones.. Well worth the money in my opinion.
nice upgrade
Name: Mark,
God created turbo lag so nitrous trucks could have a chance.
http://www.ls1truck.com/forums/my-ga...tml#post274877
What will they think of next? Removing roller rockers for non-rollers is now an upgrade. Is quiet worth it? There were some needle bearing failures 6-7 years ago but the last 2 or million sets have been good.
Well I just did a set that had needle bearing failures, so it kinda worth it to me. And the stock rockers aren't roller rockers....
Yes they are....just not full roller. Roller rockers have roller fulcrum, full rollers also have a roller tip. The fulcrum makes the waaaay biggest difference hence no roller tips OEM ('96 LT4's had full rollers). I'd bet 0.04% of the roller rockers GM built failed but if it's quieter and more reliable then it must be a cool mod.
Dare I ask how much it costs?
yea how much!!!?!?!?
2005 GMC RST *sold
2006 Silverado SS with nawz
Here is the link to the conversion kit... LS1/LS6
Once again well worth it when you have a higher lift cam than STOCK and a couple of your bulletproof OEM Roller rockers FAIL and leave needle bearings all in your motor...Maybe just me, but I went ahead and did the conversion on mine without a second thought.
Cool.
Real pricey but I can't afford an engine swap much less a cam.
It looks like well engineered stuff to me. Did you get the new rockers already converted or did you do the conversion with their parts.
I just sent off 2 sets and had them do the conversion, they looked brand new when I got them back.
Soo ,you hear a definate difference?no more singing?
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
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