i want to find out ratio the came with automatic tranny, "zc motor" is it 10;2.1 comprestion ratio? i did seacrh the manual motor its 9;5.1. I just got zc motor came with automatic tranny and the pulley are big compare to my old zc manual small. i would like to get new one or use coud able to swap from usdm teg 87-89 automatic pulley? thank's for help


[Modified by turbozc2001, 9:42 PM 5/8/2002]

 

I'm gonna take a stab and say that the manual/automatic zc's have the same cr..