I need a party number for a 1LE A/C delete pulley for an LT1, I went to the local gm dealership and he couldn't find one on his computer. Any help is appreciated.

 

I moved by alternator over to that side. I just made an extension bracket cause of the difference in the mounting bolts from a/c to alt. All I did was take a piece of 1/8 flat steel from some old bracket from who knows what, and made a 2" x 4" rectangel with two holes in in. A couple of rod ends connected works good also, then you can adjust the tension.

Then, cut your old belt, have someone pull the tensioner all the way back and cut the belt to fit. Then just take it to the auto store and have them size in up. I bought the two closest and returned the lesser of the two.

I got a a pic of the bracket if you want.

 

This is the # on my AC Delete pulley.10055890
Don't know if it'll fit on an LT1,but fits on 89-92 Serpentine setup for 305/350.
Hope this helps.
-Rich-