I'm not that up on fourth gens but I know on my IROC I changed the plastic gears in the trans for the speedo. Is it possible that this is the same on the
4L60E?
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--==RPM Resto & Custom==--
1989 IROC-Z Media Coverage:
Chevy High Performance - Readers Rides 4/03
GM High Tech Performance - Tech Article 3/06
Chevy Rumble - Tech & Feature Articles November 2006
Auto Restorer Magazine - Feature Article 5/11
SkinAndSteel.com
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