[svandamme]

S cams are high lift , high duration..

So the valve, is up high, for a long time.
That requires pistons , with valve pockets
Without them, the piston comes up while the valve is still not down yet... collision insues.


The high lift / duration also causes overlap, causing a burp in the intake..
CIS meter plates don't like ... not sure that a Hot wire maf will like it either...

Then there's the power curve S cam's produce power higher up in the rev range...
below 4500 rpm , they are lazy... And they keep going up to 7000 + rpm.. that's more then your engine does now..

Your engine, has a 74.4 mm crank... it's a long stroke engine
Piston speeds are much higher per RPM, they need to accelerate faster, and travel farther within each rotation...

This is why i am short stroking to 66mm, so i can rev it up

for each RPM, a piston has to
accelerate
travel the stroke
decelerate
reverse accelerate, travel, delerate...
repeat

So yours with 74.4 mm to travel, has to travel 12% more distance, per revolution
Might not sound like much at 500 RPM...


But each increase in RPM will require even higher speeds to travel the distance
Above your stock Redline things will get scary real fast in terms of the G forces (no pun intended) that act on the piston, rods and rod bolts...

It's possible... don't get me wrong... but big displacement long stroke high revving engines.. costs money

You could put in S cams, and not rev it up... but what's the point then... better off getting cam's that are better suited for your rev range..
Wayne's book, don't have it with me... but does it say you can just drop in the S cams on an other wise stock 3.2 engine?? Or does it come as a hot tip for somebody who's building an other wise unlimited budget rebuild? New rods, arp bolts, valve springs, head work, Individual throttle bodies, custom pistons...

The compression is not the issue, that's down to piston design...But valve pockets mean less compression, to compensate the dome has to be bigger... bigger dome means you'll need twin plugging..
everything affects everything, and everything will cost you big money to get.