IAC depth? [Archive] - GrandAmGT.com Forum GrandAmGT.com Forum > GAGT - Technical - Sponsored by www.MilzyMotorSports.com > Technical Q&A > IAC depth? PDA View Full Version : IAC depth? 350rs04-23-2010, 07:24 PManybody have an exact measurement on how deep the IAC should be? My idle problem is back with vengeance now and needs to be corrected asap vBulletin® v3.7.2, Copyright ©2000-2017, Jelsoft Enterprises Ltd.