Do you know what your real compression is with that late 360?
piston number and/or compression height- flat tops, eyebrows for the valves?
post up the cranking compression- oops too late
measure your deck clearance at all four end cylinders and see if they squared up the block
what springs, dampers? stock diameter or???
ani id on the cam?
If typical Low compression 360 a 270 class cam is way too big
Headers- try for 1 5/8 or 1 3/4 max for your street build- you need the velocity down low-- try pipemax Tri Y's would work OK
Think about a Magnum small dia starter
figure out the heads B4 even thinking of a cam
Stock 360's try a DIY port kit or at least clean up the bowls- if low compression think about 30 degree seats did they backcut the valves hard ex seats? bronze guides? new viton seals to be sure
alt 1 see if you can score some 308's but not enough improvement on what you have if your heads are in good shape- check the guides
you know the arguments about reworking 30 year old iron vs new EQ- your lowest cost new option
If you use open chamber heads and are changing pistons get the KB with the quench dome
closed chamber get the quench/ dish - get your compression wherever AJ recommends
if low compression I would not wish 268 chevy cam on my worst enemy. Intake closes at 60 degrees After Bottom Dead Center whereas a cam for low compression should close in the under 55 degree area max--AJ can explain the dynamic compression
let's not look at cams till you get them mechanical worked out
But as an example the Lunati Voodoo253/256 duration but still 454 lift intake closes 54.5 degrees ABDC- you could run 1.6 rockers if you wanted more lift but with stock heads not worth it
Comp has an intake lobe 254 duration but with .467 lift
Engle has one
Hughes 210@.050 cam has 512 lift their one size smaller 252 cam is 206 @.050 still has .475 lift
lots of other examples when we get to that point