Lt1 into 87 iroc - Engine Swap - Third Generation F-Body Message Boards

Camaroman P · 10-04-2006, 03:38 AM

Can any one help me with lt1 wiring diagrams and 87 I will be swapping a 94 lt1 with 460le tranny also can were can I get a vss to mechanocal for the mechanical speedometer or does anyone else have any helpful solutions

ACCLR8N · 10-04-2006, 12:46 PM

Have you seen this site for the LT1 wiring: 4th Gen LT1 F-Body Tech Aids I wish I could have found the same level of info for my 87 body. A Chilton's book is getting me by.

There are VSS to mechanical adapters, but I'm switching to a programable electronic Autometer gauge for my swap. I look for the adapter suppliers when I get home tonight.

Camaroman P · 10-04-2006, 06:20 PM

Hey I was wandering what kind of dash you are putting in and where could I get one of the auto meters at can you send me a picture of what they look like do you have a 87 iroc diagram well basically where do I make the splices on both harnesses

ACCLR8N · 10-05-2006, 12:36 PM

I'm building a custom dash and interior as part of my project. I haven't gotten that far yet. Summit Racing has the gauge I plan to use for $210. On your LT1 harness its the white 10-pin connector (C220) that is inside the car. Pin "G", dark green with a white stripe is the VSS signal that is connected to the speedometer. Then you need a ground, keyed power, lights from your dash. I haven't identified those yet. Hope your good with a test light.

Klortho · 10-05-2006, 01:29 PM

To use the original speedo, you would need a Cable X box

Abbott Enterprises - cable x

CableX Speedometer Cable

David Petersen · 10-05-2006, 02:04 PM

I used all autometer guages when I swapped my LT in. I bought a wrining kit specifically for 82-92 F bodies. The kit was kind of expensive but it had a reall good diagram of what each of the wires were on the two guage plugs. Let me know if you could use the diagram.

ABJ88 · 10-05-2006, 03:05 PM

Quote:

Originally Posted by Camaroman P

Can any one help me with lt1 wiring diagrams and 87 I will be swapping a 94 lt1 with 460le tranny also can were can I get a vss to mechanocal for the mechanical speedometer or does anyone else have any helpful solutions

I would like to know when your all finished how you did with emissions, I heard something about having a "Ref" change the system to(well in your case) a 1994 camaro/firebird setup. It all sounds confusing to me, but I'd still like to do it. Thanks.