Rocker arms for 408 build

i've relocated lots of studs
bbc rockers in sbc and all that
pita
magnum heads have little to work with
Crower set back fulcrum rockers are where to start
what your current and target distence from the center of the fulcrum to the center of the roller with the valve at half lift
you can get a piece of 3/8 sqaure or hex
lock the valve at half klft with a screw c-clamp on a seal
put te stock in the tip
then top of the stock is a line were the fulcrum has to be
then take a piece of 5/16 rod with a round end and sit it in the lifter at top lift
where where the two cross
that's as short as your adjuster side can be without hitting
do the same on the base circle to find the longest
now do some calcs and grind if you need to
now set you're cam and lifter at mid lift because that's the line your adjuster is going to be on
now find a rocker that fits and put your stud or shaft there
good luck finding a rocker where the adjuster is in line with the pushrod at mid lift
obviously if is nit your ratio changes with adjustment and there is more stress
yoy may just have to get the center of the adjuster ball line to the center of fulcrum perpendicular to the pushrod line then get your pushrods to put the ball where the two lines intersect
you do not want a lot of threads showing especially if the adjuster is not in close alignment with the pushrod
funfact the rocker stud is not in line with the valve stock
is now after customer came back and wanted to run a taller spring/ longer valve
btw hate short arm rockers use stock low ratio rockers and set up mid lift perfect or sell the heads
now cad and 3d printing