727 vs 730???
Thread Starter
Melting Slicks
Joined: Apr 2001
Posts: 2,105
Likes: 220
From: Ca.
727 vs 730? and 730 swapQ's
Now that the really hot weather is here-the maf is having a hard time surviving sitting next to the SC! So I'm finally going to do the speed density swap.
I need to clarify the diff between 730 and 727 ecms however...
As I understand it, one is "weatherproof" for under the hood and has 4 vs 3 connectors?
Also are the physical dimensions the same? I'm planning on keeping it up under the dash.
After more phone calls to boneyards etc....looks like I can get a 7730 ecm (same ecm, connectors as 90 to 92 camaro?) out of a corsica with the three connector plugs and a couple feet of wire cut off the engine harness.
So correct me here if I'm wrong.....I need an ecm pinout diagram from a 90 to 92 camaro (along with my 86); and are the pins the same-just pop them out of the original connectors and pop them in the plugs that I get from the boneyard?
Thanks!
[Modified by drive it, 12:49 PM 7/17/2003]
[Modified by drive it, 12:52 PM 7/17/2003]
[Modified by drive it, 12:54 PM 7/17/2003]
I need to clarify the diff between 730 and 727 ecms however...
As I understand it, one is "weatherproof" for under the hood and has 4 vs 3 connectors?
Also are the physical dimensions the same? I'm planning on keeping it up under the dash.
After more phone calls to boneyards etc....looks like I can get a 7730 ecm (same ecm, connectors as 90 to 92 camaro?) out of a corsica with the three connector plugs and a couple feet of wire cut off the engine harness.
So correct me here if I'm wrong.....I need an ecm pinout diagram from a 90 to 92 camaro (along with my 86); and are the pins the same-just pop them out of the original connectors and pop them in the plugs that I get from the boneyard?
Thanks!
[Modified by drive it, 12:49 PM 7/17/2003]
[Modified by drive it, 12:52 PM 7/17/2003]
[Modified by drive it, 12:54 PM 7/17/2003]
Drifting
Joined: Mar 2001
Posts: 1,636
Likes: 3
From: Lafayette IN
Re: 727 vs 730? and 730 swapQ's (drive it)
Go with the 730 if you want it to be an easy swap and you are going to mount it inside the car.
The pins are the same shape, so yep. Just pop out and pop in.
You will need that extra third connector, so take it graciously if the junkyard is going to give it to you.
Correct about the diagrams. Schematics at the bottom of this page. http://www.diy-efi.org/gmecm/ecm_info/1227730/
Also, shoot up "730 Club" in the search engine in archived topics and check out some info there on VSS, etc.
The pins are the same shape, so yep. Just pop out and pop in.
You will need that extra third connector, so take it graciously if the junkyard is going to give it to you.
Correct about the diagrams. Schematics at the bottom of this page. http://www.diy-efi.org/gmecm/ecm_info/1227730/
Also, shoot up "730 Club" in the search engine in archived topics and check out some info there on VSS, etc.
Thread Starter
Melting Slicks
Joined: Apr 2001
Posts: 2,105
Likes: 220
From: Ca.
Re: 727 vs 730? and 730 swapQ's (HighHopes85)
Go with the 730 if you want it to be an easy swap and you are going to mount it inside the car.
The pins are the same shape, so yep. Just pop out and pop in.
You will need that extra third connector, so take it graciously if the junkyard is going to give it to you.
Correct about the diagrams. Schematics at the bottom of this page. http://www.diy-efi.org/gmecm/ecm_info/1227730/
Also, shoot up "730 Club" in the search engine in archived topics and check out some info there on VSS, etc.
The pins are the same shape, so yep. Just pop out and pop in.
You will need that extra third connector, so take it graciously if the junkyard is going to give it to you.
Correct about the diagrams. Schematics at the bottom of this page. http://www.diy-efi.org/gmecm/ecm_info/1227730/
Also, shoot up "730 Club" in the search engine in archived topics and check out some info there on VSS, etc.
Another thought-camaros don't have vats...so for pinout of vats on 730??? Or do you just uncheck it in the prom and do without? Lookin' like I've got most everything else figured out.
Just printed out those diagrams...so the 730 does have a vats input!?
[Modified by drive it, 2:11 PM 7/17/2003]
Drifting
Joined: Mar 2001
Posts: 1,636
Likes: 3
From: Lafayette IN
Re: 727 vs 730? and 730 swapQ's (drive it)
Pretty sure it has VATS. I din't, so I only had to uncheck VATS in the ECM...on a friend's 89 IROC, he had a problem with his factory VATS. I had to toggle the flag and also hardwire the VATS relay. So you may also have a bit of hardware to take care of depending on how VATS was handled on the later ECMs.
Pro
Joined: Jul 2001
Posts: 557
Likes: 0
From: Taxahoma
Re: 727 vs 730? and 730 swapQ's (HighHopes85)
if your running a supercharger i'd go with the 749 ecm with a 2 bar map and ditch the extra fuel man. crap that comes with the sc.
http://www.efi-tuning.org
http://www.efi-tuning.org
Thread Starter
Melting Slicks
Joined: Apr 2001
Posts: 2,105
Likes: 220
From: Ca.
Re: 727 vs 730? and 730 swapQ's (Black87c4)
if your running a supercharger i'd go with the 749 ecm with a 2 bar map and ditch the extra fuel man. crap that comes with the sc.
http://www.efi-tuning.org
http://www.efi-tuning.org
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote