NZinAUS unfortunately i was involved in the fitting of the aformentioned cam into said EF head, and while the ED cam might work well with the ED manifold and computer, it sure as hell dont work with the EF rockers!!!
the inlet and exhaust rockers on EA-D falcons are not interchangeable, the exhaust ones are straight and the inlet ones are on a slight angle, when viewed from the top down. on a EF (and possibly onwards) the inlet and exhaust rockers are the same, ford just turns the inlet ones through 180 degrees and bungs them onto the exhaust side.
so when you put a ED cam into a EF head with EF rocker gear the cam lobes are way to wide and they dont line up exactly, meaning when you try and tighten down the gear the rocker arms get squashed onto the cam lobes and get FUBAR. as i found out.
ED gear will fit EF head with ED cam no worries, this is what we used to get poor dinga out of trouble on sunday. i have never heard noisier rocker gear on any car. ever. including drag V8s with solid lifters...we must have picked the one with the most F*cked lifters in the place!
i dont know if a EF cam would go into a ED while still using the ED rockers, its possible given the thinner lobes of the EF cam, might allow it to fit, but if you are going to get a EF cam then EF rocker gear is the way to go as well, smaller lighter rockers let the engine rev a bit easier and might also let a little load off the valvesprings...
i think the reason ED/F heads are so different is because the redline on a ED is 5000rpm, but on a EF its 5500rpm, to get the extra revs and smoothness out of the later engine they made the cam lighter, same with rockers, (rockers became interchangable possibly to help cost cutting) also the valve stems are 2mm smaller on EF compared to ED, the springs are conical instead of normal...
dinga i reckon that you should get the EF crow cam and get some EF rocker gear, sell or swap the ED cam. unless you want to buy a full set of lifters for ED rocker gear...
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