SOURCE: what is the order of
pull the number one spark and turn crank until piston comes all the way up than you can tell what your exhaust intake is
SOURCE: Sequence for the push rods
The valves that are furthest from the intake, on the outside perimeter of the head, closest to the spark plugs are small diameter valves. These valves use the short rods.
The valves that are [non-uniformly] on the interior of the head use the large diameter valves. These valves use the long push rods. This is not due to the diameter, but do to the proximity of the valve on the head with respect to the rod length required to push it.
So, looking at a picture of the "front head," closest to the front of the car, from underneath will verify that diameters are small - large - large - small - large - small. Inspecting from above you should note the order of valves as outside - interior - interior - outside - interior - outside.
And if you invert that same head to the "rear head" configuration (180o) it would become small - large - small - large - large - small (outside - interior - outside - interior - interior - outside).
The answer is this:
The rear head (2-4-6) will have push-rods in the following configuration:
short - long - short - long - long - short
The front head (1-3-5) will have push-rods in the following configuration:
short - long - long - short - long - short
SOURCE: WHAT IS THE TORQUE ON A 94 BUICK CENTURY 3.1 V6 ON
Tightening sequence would be to tighten from the center most bolts to the outer most bolts.
Intake Upper Bolts = 18 lb.ft.
Intake Lower Bolts = 10 lb.ft.
Exhaust Manifold Nut = 12 lb.ft
Exhaust Manifold pipe = 22 lb.ft.
Exhaust Manifold Heat Shield = 18 lb.in.
Rocker Arm Torque Nuts = 18 lb.ft.
Hope this helped you ?? if you need more info, get back to me.....
SOURCE: which push rod is exhaust and intake on impala 3.4
usually the first valve & last valve on either head is the exhaust
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