That's why I asked for verification Robert! I can't see the a.I.r. Ports either.
However, let's not confuse this "emissions" vs. "non-emissions" stuff for these motors. That terminology means different things through the evolution of the IH engine product, depending upon which platform it was installed in originally, what the gvwr for the oem install was, what market the vehicle was ordered for, and the engine serial number "cut" point. This stuff was not an "all" or "none" deal and there was much crossover of components used, most especially in a "repair" situation!
An example is the head deal! There was an oem head number used when the engine was built. There was a "service part" number used for replacement parts procurement. Then there was the supercedence situation in later years as replacement part numbers were consolidated. Then there was a "remanufactured" p/n used for heads, short blocks, etc. Done at the various IH "branches". Then there was the "outsourced/contracted" line of reman/replacement stuff done under the "renew" line by folks such as jasper and marketed only through the IH dealer network or an authorized IH "service only" location.
In working with these engine kit parts nearly every day now, there is great ambiguity regarding aftermarket replacement parts such as pistons, cam/crank gear sets, camshafts, distributors, etc. Due to the use of "emissions" or "non-emissions" terminology. Much of the time we have to call a tech specialist at the supplier and have them explain exactly what they have and what we need! Once we've done that the first time, then we know what the parts sitch is and can make the appropriate ordering decisions. Dealing in 30+ year old engine parts, many of which have not been produced in the intervening years can be a real challenge, this is not cut and dry and we deal with real pros, not some localyokel parts monkee witha suspended driver's license.
An example...dealing with lining up the rocker shaft/assembly stuff...the parts are in warehouses somewhere! But we gotta get all the suppliers on the same page talking the same type and design rockers, shafts, stands, push rods, new, reman, etc.!!! Then we gotta git all the stuff into the store at the same time, inspect for "correctness", and then have a dialogue with the customer about "which" parts they really need! Most folks are not anywhere near knowledgeable about this stuff so we have to grill 'em extensively to make certain we git them the correct stuff they need the first time!
