Turbo V8

[Bob Wooten]

The difference is a few pins & what the outputs are.  As the 7730 & 7749 are
essentially the same ECM I am planning on using my 7730 & running the Sy
code in it.  when I do that some of the pinouts change & some disappear.
Here are the differences. I posted a more in depth description about this in
on the DIY Prom Board on the 3rd gen Camaro site. (www.thirdgen.org) do a
search & you will find most of what you are looking for.  btw, I got this
info from Ludis site (http://www.cruzers.com/~ludis/), more about ECM's than
you will EVER want to know, a fantastic resource, imo.

BW

		7749					7730

A8		N/C					ALDL Serial Data
A9		ALDL serial data			N/C
B9		N/C					VSS input (Low)
B10		N/C					VSS input (high)
B11		N/C					VSS to inst panel
C1		N/C					Vehicle Speed Signal (Cruise)
C6		DRAC Signal				N/C
C13		Inj Ground				N/C
D6		N/C					Inj Ground
D12		N/C					Fan #2 Request
D14		N/C					4th Gear Switch
E3		IAC B-Low				A-High
E4		IAC B-High				A-Low
E5		IAC A-Low				B-High
E6		IAC A-High				B-Low
E13		N/C					Fuel Pump Signal (PPSW)
F1		A/C Relay control			MT Shift Light Control
F2		Waste Gate Solenoid		N/C
F4		TCC Solenoid control		Cat Conv Diverter Solenoid
F6		N/C					TCC
F7		N/C					Canister Purge Sol Control
F10		N/C					Pass Key (VATS)



-----Original Message-----
From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
Of Brendan
Sent: Wednesday, August 29, 2001 8:16 PM
To: gmecm at diy-efi.org
Subject: Re: Turbo V8


What exactly is the difference in the 730 --> 749 conversion. Does anybody
have a pinout of the 749?
I have an 87z28 that I converted from 165-->730 a few months ago, a turbo
charger would be awsome but not in the near to distant future. What would
need to be changed?
Just the pins on the ecm plugs? Any new wires need ran?
Just wondering if I should do the change over and then tune the Sy ecm for
my NA motor until the time comes?

Brendan
<snip>

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