What kind of transmission does an IROC Z28 have?
What kind of transmission does an IROC Z28 have? The LB9 was available only on the Z28 and the IROC-Z model with the TH700-R4 automatic transmission. A total of 205 IROC-Zs equipped with the LB9 305 with the G92 (Performance Axle Ratio) option were made in 1985. What was the problem with my 1988 IROC Z 350? My 88 Iroc-z 350 did the exact same thing. It does it every now and then. Every once in a while it would get so bad that it stalled, throwing the check engine light on. I took it to the garage, and they...