...swapped in a nice 'truck' Comp Cam, and since day-1 I've had what I consider excessive 'chatter' from the engine, and long story short the consensus was 'lifters'. I'd been calling around and getting several additional opinions from places including Hughes Engines and Scram Speed, and with a lot of unawesome lifters out there I had to dig for the good stuff, and that led me to Top Line Automotive/Hy-Lift Johnson. I was going to order a set of #5006 lifters from Hughes (who sells Hy-Lift Johnson lifters) but they had two versions, including a high-performance 'quiet' slow-leak down set #5006S, but they first recommended I call HLJ to ask about the differences and how well they would work for my 'truck' application. So I called HLJ, and they informed me that there is another lifter they sell - same as the 5006S but with an additional feature - an additional oil feed port direct onto the roller bearings (of which I thought 'yes, please'). These HLJ lifters, #2269SE, are direct replacement lifters for the Viper V10, which very conveniently also happen to be direct-fit lifters for the Magnum V6 and V8 engines...and yah I nicely asked them to put a set of 'em in a box for me . Granted, my 360 won't be turning the rpms of a Viper V10...but it will be spending a lot of time at very low rpms when rock crawling, and having that extra oil port lubricating the rollers can't never ever be a bad thing, like ever. They also offered a military discount and I got them for $34 each, which for anyone shopping around is really not bad at all. USA made, good reputation, and all the features of slow leak-down, and direct oiling - win-win.

One thing about Magnum engines is...it's almost impossible to get the lifters out unless you pull the heads (more specifically the head gaskets). There's a portion of the head gasket with alignment holes in it for the pushrods, which unfortunately makes it nearly impossible to get the lifters out - the lifters need about 1/8-1/4" more distance before they'll come out, and forcing them past the gasket would probably scratch the lifters - for sure would scratch the spendy brand-new ones trying to cram them in the bores....but I employed a very simple solution - got a fresh set of tin snips, cut away the head gasket material, and they pop right out! My new V10 lifters dropped right in 👍

This is the area of interference -




Cut this section of the head gasket out - problem solved, and no need to pull the heads 👍 . Yah you lose the alignment holes, but who really needs those anyway...