C4 General Discussion General C4 Corvette Discussion not covered in Tech

ecm computer

Thread Tools
 
Search this Thread
 
Old Aug 6, 2017 | 07:57 PM
  #1  
mouser's Avatar
mouser
Thread Starter
1st Gear
 
Joined: Aug 2017
Posts: 1
Likes: 0
Default ecm computer

can i put a1987 ecm computer in a 1985 corvette. reason is motor was rebuilt to 383 stroker now i can not set old computer to this motor.
Reply
Old Aug 8, 2017 | 07:07 AM
  #2  
blackozvet's Avatar
blackozvet
Safety Car
Conversation Starter
Liked
Loved
Community Favorite
 
Joined: Nov 2009
Posts: 3,969
Likes: 340
From: Adelaide South Australia
Default

ok, Ill deliver the bad news - no. The 85 uses the '870 ecm and the 86 and later uses the '165 ecm, the looms are slightly different so it wont work.
If you need a tune then it doesnt matter which one you use anyway.
there are still some people around (not many) who can burn an 85 chip.
or consider a Dynamic efi - http://www.dynamicefi.com/EBL_Flash.php
Reply
Old Aug 8, 2017 | 10:23 PM
  #3  
gerardvg's Avatar
gerardvg
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2009
Posts: 3,745
Likes: 275
From: Melbourne, Victoria, Australia
Default

Originally Posted by mouser
can i put a1987 ecm computer in a 1985 corvette. reason is motor was rebuilt to 383 stroker now i can not set old computer to this motor.
Hi
You only need to calibrate the MAF table increase it by 10% for a 383 engine, I use Tunerpro and a moates ostrich emulator to do it myself.
It is a steep leaning curve to use tunerpro, always make do a backup !!

I still run the 85 ECM with my 383.

The other option is to get your MAF calibrated for the 383 engine and larger injectors.
Reply
Old Aug 9, 2017 | 03:59 AM
  #4  
Cliff Harris's Avatar
Cliff Harris
Race Director
15 Year Member
 
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Default

Putting a 1227165 ('86 - '89) ECM in an '85 is a pretty common modification. There are several web sites that will tell you how to do it. It's mostly moving some wires to different positions in the ECM connectors.
Reply

Get notified of new replies

To ecm computer





All times are GMT -4. The time now is 07:52 AM.

story-0
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-1
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-2
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-3
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-4
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-5
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-6
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-7
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-8
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-9
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE