Message: Here's a odd one, bought a replacement IAC for my 3.9 today using the OEM number of course to get the proper replacement. Turns out the OEM number (53030450) was listed for the 94 - 96 V8 models! Since I bought the truck used I know little history, wondering if someone didn't swap in a V8 TBI? The only markings on the TBI besides Holley are the numbers 12R-10897B, do these numbers tell the tale or are there other identifying castings?
Subject: TBI Swap?