>the Hemi camshaft keeps getting higher and higher to get the right pushrod angle for the opposed valves bruh... just make it OHC at this point
But that would be missing the point
>>29097906Technically you might even say it's OHC already just make the chain a little bit longer and you could have the cam acting directly on the rockers
>>29097903>the Hemi camshaft keeps getting higher and higher to get the right pushrod angle for the opposed valves That's not why the cam is that high up there. 426 Hemis are basically the Hemi head slapped on an existing RB block design that used Wedge heads and they're fine.First thing is they had to account for a long stroke and the way to do that is move the cam up. This is how the Ford 460 is able to be stroked out to silly displacements since its cam is placed fairly high up compared to its contemporaries.The REAL culprit is that the Gen 3 Hemi is a centeroiler design done wrong. Like the FE Ford there is a central oil galley that runs parallel to the cam. In the Ford that galley is above the cam and the mains are fed through the cam bearings. Worked well enough on the street but wouldn't live on the superspeedways so we got the Sideoiler. Mopar, despite having a tutorial already done on the subject, decided that they would fix that problem by putting that oil galley BELOW the cam and feed the mains directly. Never mind that this blocks oil splash from the crank which lifters need to live. Picrel.
>>29097992That is absolutely why Hemis have high camshafts, just look at how funky they have to get with the rockers on a gen 1
>>29097996Disagree, in that I see that as a knock-on effect of the cam being forced too high by the under-square design and a dumb placement of an oil galley.What we CAN agree on is that they fucked it all the way around.
>>29097992would it be possible to drill holes in that galley to squirt oil on to the lifters?
>>29098489Since there's no room to place a fitting/pipe/squirter on the bottom of the center oil galley as the crank throws and rods pass through there you'd have to come at it from the top by drilling access holes in the center of that valley bulge and place whatever you've designed in through there. then seal it back up as the center valley is open to the outside. OR you could just not idle the damn thing for hours at a time.They should've just done a sideoiler design and that would've allowed the cam to come down quite a bit but probably didn't because the added machining steps for cross passages and plugs would have cost an extra penny a block or something.
>>29098540forgot pic
>>29098540i wasn't even thinking of actual squirter nozzles, just holes in the galley that allowed pressurised oil to shoot out right on to the lifters. then i realised that the cam is probably cockblocking that.
