http://www.gmgoodwrench.com/perfpart...on=ce&cat=9274

Could some knowledgable person take a moment to look at the engine at the top of this page and possibly tell me what ecm and chip is used for this package? Is there anyone reading this who purchased and installed this motor when it was available?

1228079 ECM
24502457 PROM 82-84 LG4
24502456 PROM 85-87 LG4, 83-86 L69

thanks, i ran the ecm number through a search here and came up with a load of info.

i got the 87 ecm and prom for sale..this is the cats meow if doing a zz4 conversion