My motor has developed a noise in the top end that's what I would call outside of the "typical" HD engine noises. It's more of a clatter, and it happens intermittently at start-up and at low RPM deceleration at about 2,000 RPM. Without professional diagnosis, I'm pretty confident it's a lifter. So, here's the real question. If I'm going to replace the lifters, I'm also going to replace the pushrods with adjustable pushrods. I'm wrestling with whether I bite the bullet and do cams while I'm in there. I'll be doing the work myself, but it's still a chunk of $$, at about $750 (at least for me it's a chunk of $$). I'm running a stage one system now, and FM's theoretical numbers are about 90HP and 105 ftlbs. The theoretical numbers for the Wood Performance TW-555 cam is 95/112. Doesn't seem like much gain for the $$, but FM says the seat of the pants will definitely be noticeable. What's everyone think? On a slightly separate note, I was a little surprised by the information I got regarding lifters. I talked to S&S and their recommendation is to use their High Performance lifters ($130/set) rather than their Premium ($280) for the horsepower I'd be running. The person I spoke to at FM was adamant that the S&S High Performance are junk and should never be used. They recommend Wood lifters, as well (and they sell both). Not sure what to think about that. I don't think it's purely an upsell issue. What do you think?
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