Results 1 to 11 of 11
-
08-16-2009 #1
Registered User
- Join Date
- Oct 2004
- Location
- Fullerton, CA.
- Posts
- 187
5.3 conversion wiring Confusion/solution
I have a 2003 5.3 engine only so I have to supply my own harness and ECM. I can get a deal from Painless, and get a reman ECM. Or go through Tech Rods and get a Reman ECM and have it Re-Flash. My rep from painless says that they will re-flash my ECM to my specs for free.
Or Get a donor harness (if so from what car) and mod it and get a Reman ECM. Lots of options in need of a little guidance. I will be using a LS-1/6 Intake and a 200-4R trans and Camaro based Kwik-perf Pulley system. HELP
Mike Martin
Heavy Chevy 2.0: 71 Heavy Chevy, Unisteer,SC&C, GW,Eibach,Bilstein,Helwig,Showwheels-Streeters, Carb'd LS-327 W-200-4R
LS-327 powered, Atomic EFI on the way
-
08-17-2009 #2
Registered User
- Join Date
- Dec 2004
- Location
- Midwest
- Posts
- 2,263
Are you near a decent chassis tune shop? I'd get the stock ECM and have then tune / flash the box with an edit program so you know it's right.
Kevin Oeste
V8 Speed and Resto Shop
V8TV
Muscle Car Of The Week
V8 Radio Podcast
All about us:
https://www.v8speedshop.com
08-17-2009 #3
Registered User
- Join Date
- Oct 2004
- Location
- Fullerton, CA.
- Posts
- 187
I have a decent shop nearby and I will more than likely take it to them to dial it in. I just checked the so-called deal on painless and I guess I'll be looking elsewhere. I assume if I get a Camaro Harness (for example) and remove all the un-needed stuff myself then get an ECM for the same year then I could have the ECM flashed by my local shop to get it running and then bring it in for a final chassis tune. Does that sound about right.
Mike Martin
Heavy Chevy 2.0: 71 Heavy Chevy, Unisteer,SC&C, GW,Eibach,Bilstein,Helwig,Showwheels-Streeters, Carb'd LS-327 W-200-4R
LS-327 powered, Atomic EFI on the way
08-18-2009 #4
Registered User
- Join Date
- Aug 2004
- Posts
- 567
Speartech.com
Wait4me performance
two more options for ya.Nathan Shaw
71 Nova, 1000+whp 5.3, 8 second autoXer.
08-18-2009 #5
Registered User
- Join Date
- Feb 2005
- Location
- Central Florida
- Posts
- 580
Another one for Speartech.
http://www.fquick.com/PatrickB
'68 Camaro
http://www.cardomain.com/ride/2486483
'81 Jeep CJ8
http://www.cardomain.com/ride/2486494
08-18-2009 #6
Registered User
- Join Date
- Apr 2004
- Location
- OKC, OK
- Posts
- 3,739
Forget painless, go to speartech, not sure tech rods is even around anymore
Mike Redpath
Musclerodz & Customz
405-288-0189
pro-touring parts specialists
Musclerodz.com
facebook page
http://www.facebook.com/#!/pages/Mus...73054649402015
instagram
Musclerodz
08-19-2009 #7
New to Pro-Touring
- Join Date
- Mar 2008
- Posts
- 22
Yep, Tech Rods appears to still be on Ebay. $400.00 for harness.
08-19-2009 #8
Registered User
- Join Date
- Mar 2008
- Location
- Everett, WA
- Posts
- 501
Speartech x4. John is great with supporting his harness if you have installation problems.
PCMforless.com for the computer.The few, the proud, the crazy... the LT1 owners.
08-20-2009 #9
Registered User
- Join Date
- Jun 2005
- Location
- Lynnwood Wa.
- Posts
- 248
Megasquirt
http://www.msefi.comOliver Shultz
It's OK to giggle and snicker. don't laugh and point
08-20-2009 #10
-Moderator/Sponsor-
- Join Date
- Jun 2001
- Location
- Newbury Park, CA
- Posts
- 5,839
If you are on a budget you may want to consider an ECM and harness from a truck. The harness is usually long enough to mount the ECM where you wish, and gutting it is no harder than the F-body harness.
VaporWorx. We Give You Gas http://www.vaporworx.com
08-24-2009 #11
Registered User
- Join Date
- Oct 2004
- Location
- Fullerton, CA.
- Posts
- 187
Thanks Carl I may ask you for some advice/input later. I think that will be the way I go. With the truck harness/ECM and mod it. If I run the LS1/6 will I have to change the injector plugs? I don't think the trunk injectors will work with the LS1/6 fuel rails. Or has anyone made the truck intake look good(Just kidding). After this weekend I'll have 2 5.3's I'm picking up another one for a 20 pack of Coors light. This one is a clean runner top to bottom.
Mike Martin
Heavy Chevy 2.0: 71 Heavy Chevy, Unisteer,SC&C, GW,Eibach,Bilstein,Helwig,Showwheels-Streeters, Carb'd LS-327 W-200-4R
LS-327 powered, Atomic EFI on the way
Reply With Quote
