What were the GM engineers thinking????
I had the same problem, I out the clamp on as best I could, heated it red hot with a torch and crimped it with a big pair of wire cutters. That worked!
The clamp was so hard to crimp I gave up after squeezing and trying for like 10 minutes.
I dont know why the clamp was so hard to squash onto the egr pipe.
So I got my snap on bolt cutters which is about the same length as the grainger tool and with EASE it began to squash the clamp into place.
I had to be careful that I didnt cut it through..I didnt.
Whew!I cant imagine doing this in the car..without bolt cutters. that is.
Btw the later TPI L98 cars came with the egr tube that had 2 bolts holding them together..I have an extra set of exhaust manifolds off a '90 that has this set up and may add them someday.
GM DID eventually realized they screwed up and made the newer models have a longer tube off the exhaust manifold and attaches to the egr pipe with 2 bolts kinda where the clamp is now on the 86 cars....better improvement over the first design.
Dont even bother with the grainger tool...get a good pair of 10-12 inch bolt cutters and squash the clamp on with that.You can get them at sears or someplace.
My snap on one I already had, cost me too much money when I bought it a few years back, but it will squash or cut anything I use it on.









