No.
the intake pushrods are shorter of the 2, all intake valves you can see with the intake off those pushrods go there, the rest are exhaust pushrods install in remaining holes
53 58 63 68
Only if they are worn.
48 hole bolt tightening seqence
no
it mostly deals with variable, and different Mathematical seqence ooerations and lot more.
When you cross them over from one another
Take off valve covers, heads an intake manifold with throttle body, pull out lifters and pushrods and simply replace It's not necessary to remove the heads for this procedure.
wh
The pushrods in a 3.1L are different lengths. The intake pushrods are shorter than the exhaust pushrods. That's really half the story right there. You will need to know which valves are for intake and which are for exhaust. While looking at the head you will see the the valve springs assemblies are at differing heights. The ones that appear highest on the head are your intake valves, the ones appearing lowest are your exhaust valves. to be exact the intake pushrods are approx. 5 and 3/4 inches long, exhausts are 6 inches, on 3.1
The exhaust pushrods are slightly longer than the intakes. To locate where to put the shorter intake pushrods look in the bores in the cylinder heads where the intake manifold lines up and you'll see the intake valve. Simply place all the short pushrods where you see the intake valves and you should be able to find where to install the rest.