<P> The IROC - Z was introduced in 1985 and continued through 1990 . National Highway Traffic Safety Administration ( NHTSA ) Regulations required a CHMSL ( Center High Mounted Stop Lamp ) starting with the 1986 model year . For 1986 , the new brake light was located on the exterior of the upper center area of the back hatch glass . Additionally , the 2.5 L Iron Duke pushrod 4 - cylinder engine was dropped , and all base models now came with the 2.8 L V6 ( OHV ) . For 1987 and later , the CHMSL was either mounted inside the upper hatch glass , or integrated into a rear spoiler ( if equipped ) . In 1985 , the 305 cu in ( 5.0 L ) small block V8 was available with indirect injection called `` tuned port injection '' ( TPI ) . In 1987 the L98 350 cu in ( 5.7 L ) V8 engine became a regular option on the IROC - Z , paired with an automatic transmission only . The convertible body style returned in 1987 ( absent since 1969 ) and all came with a special `` 20th Anniversary Commemorative Edition '' leather map pocket . 1992 offered a `` 25th Anniversary Heritage Package '' that included stripes and a unique spoiler plaque . Beginning in 1988 , the 1LE performance package was introduced , optional on street models and for showroom stock racing in the U.S. and Canada . The B4C or `` police '' package was made available beginning in 1991 . This created a Z28 in more subtle RS styling . </P>
<P> The IROC - Z was introduced in 1985 and continued through 1990 . National Highway Traffic Safety Administration ( NHTSA ) Regulations required a CHMSL ( Center High Mounted Stop Lamp ) starting with the 1986 model year . For 1986 , the new brake light was located on the exterior of the upper center area of the back hatch glass . Additionally , the 2.5 L Iron Duke pushrod 4 - cylinder engine was dropped , and all base models now came with the 2.8 L V6 ( OHV ) . For 1987 and later , the CHMSL was either mounted inside the upper hatch glass , or integrated into a rear spoiler ( if equipped ) . In 1985 , the 305 cu in ( 5.0 L ) small block V8 was available with indirect injection called `` tuned port injection '' ( TPI ) . In 1987 the L98 350 cu in ( 5.7 L ) V8 engine became a regular option on the IROC - Z , paired with an automatic transmission only . The convertible body style returned in 1987 ( absent since 1969 ) and all came with a special `` 20th Anniversary Commemorative Edition '' leather map pocket . 1992 offered a `` 25th Anniversary Heritage Package '' that included stripes and a unique spoiler plaque . Beginning in 1988 , the 1LE performance package was introduced , optional on street models and for showroom stock racing in the U.S. and Canada . The B4C or `` police '' package was made available beginning in 1991 . This created a Z28 in more subtle RS styling . </P>
what was the first year for the iroc camaro
what was the first year for the iroc camaro
1985
1985