TBI stand alone engine harness?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Coalson01 · 10-26-2008, 06:25 PM

Hey guys, I'm planning on putting this '95 tbi 350 in my truck with a 700r4 behind it.. I have all the factory wiring harness and computor.. is there a web site that shows me what wires to delete or what it takes to convert the harness for easy hookup, tips, anything.. thanks zack

Coalson01 · 10-26-2008, 10:16 PM

I forgot the most important part. My truck is a 69 SWB chevy, it has a inline six and a three on the tree
i am thinkn about going with a painless wiring harness let me know what yall think or any tip
thanks zack

DirtyLarry · 10-26-2008, 10:34 PM

I am kind of in the same situation as you. I grabbed a complete TBI 5.7L and 700R4 out of a 1990 G-van including the completed engine and interior harnesses. I thought about reworking the G-van harness but for the hassle of doing that it might be worth purchasing a harness. After all, that G-van harness is 18 years old and the weather pack connectors are rather brittle.

I found a decent looking harness on Ebay for a decent price from a place in Denver called Fuel Injection Connection. Do a search on TBI harness to see it. The problem is I don’t want to purchase their harness off of Ebay until I speak with this guy first. I left them two voice messages last week and they still haven’t returned my call. Come this next week I will spend an extra $100 and place my order with Howell Engine Development instead. If they FIC can’t return a call to sell you a harness just think of the service you will probably receive if you should have a problem with their harness.

I am not much of a fan of anything from Painless. They are overpriced and they don’t even cover their harnesses with split loom!

Coalson01 · 10-26-2008, 10:48 PM

The painles is really expensive. I am thinking about trying my luck and work threw the factory harness or maybe finding a cheaper harness somewhere. I dont blame you for not wanting to buy a harness from somone that want even return a phone call thanks for your help

hopefully someone else has done this allready a can help us threw the process

70GMCer · 10-27-2008, 07:16 AM

There's a site that was posted on here a while back, that you could send your old harness to, and they rework it to remove all the unwanted wires & test everything. Maybe do a search on here, or someone will chime in that site.

PanelDeland · 10-27-2008, 01:41 PM

Chevy Hi Performance usually has an ad for a company that does custom harnesses for the swaps.I think they are fairly reasonable.

Coalson01 · 10-27-2008, 02:28 PM

Thanks 70GMCer I believe I found the one you where talking about. Is it speed scene wiring (speedscenewiring.com) I am looking into it now. thanks for yalls help I am still looking and open for ideas so everybody feel free to put in your comments
thanks Zack

I am fixn to check out Chevy Hi Performance thanks PanelDeland

**Captkaos** · 10-27-2008, 03:28 PM

http://www.speartech.com/ is another company, but I don't know if they do TBI.
Howell is the one most of the people I know of use.

70GMCer · 10-27-2008, 04:28 PM

Quote:

Originally Posted by Coalson01

Thanks 70GMCer I believe I found the one you where talking about. Is it speed scene wiring (speedscenewiring.com) I am looking into it now. thanks for yalls help I am still looking and open for ideas so everybody feel free to put in your comments
thanks Zack

I am fixn to check out Chevy Hi Performance thanks PanelDeland

Lets us know what you found out.

DirtyLarry · 10-27-2008, 09:46 PM

I ordered mine today from Howell.

Most of the peeps reworking harnesses are working on 1996 and later OBDII type harnesses and not so much with TBI or even TPI stuff. If you really think about it these TBI engines are getting old. Even if someone reworks it for you, you still have a 15 + year old harness that probably has brittle weather pack connectors, etc. So, why bother paying someone to rework one….. Buy one from Howell for $325 and be done with it. Howell makes nice quality stuff.....better than Painless!

The folks from Fuel Injection Connection still haven’t returned my calls. If they ever do, I can’t wait to tell them they lost a sale for not returning phone calls.

Coalson01 · 10-27-2008, 10:12 PM

I am also going to go with Howell (as soon as i get the $$) thanks everyone. I am also fixn to take and post some pics of my 69 as soon as I figure out how haha! I have a lot more question on other stuff for my truck so ya'll will be hearing a lot from me, i'll try not to ask to many questions, and thanks again for yalls help

Still learning my way around the site, but I am loving it. I spend way too much time on here, but I can't turn it off haha. Too much useful info.

72blazerblue · 04-02-2018, 02:11 PM

Quote:

Originally Posted by DirtyLarry

I ordered mine today from Howell.

Most of the peeps reworking harnesses are working on 1996 and later OBDII type harnesses and not so much with TBI or even TPI stuff. If you really think about it these TBI engines are getting old. Even if someone reworks it for you, you still have a 15 + year old harness that probably has brittle weather pack connectors, etc. So, why bother paying someone to rework one….. Buy one from Howell for $325 and be done with it. Howell makes nice quality stuff.....better than Painless!

The folks from Fuel Injection Connection still haven’t returned my calls. If they ever do, I can’t wait to tell them they lost a sale for not returning phone calls.

Larry, I am about to purchase the EFI Harness from Howell also. I have a few questions ( I called to ask them but still am fairly confused).
Maybe someone here can help me clarify:

1990 K1500 5.7 TBI ---> 1967 2WD C10

1. TRANSMISSION. I plan to mate the TBI to my TH350, but later I may find a 700r4.
-Does my Howell Harness wiring need wires for a 700r4?
-Or should I omit those and if I decide to upgrade later, use a mechanical 700r4 ( I think thats what the 4x4 one is in the 90 4x4 now)

2. Do I need VSS with the TH350? 700R4?

3. Does the Howell wiring come with wires for Neutral safety switch?

4. The guy I talked to at Howell said I may not be able to use the computer I have. Said it may need a new Prom Chip?

MARKDTN · 04-02-2018, 03:51 PM

1. TRANSMISSION. I plan to mate the TBI to my TH350, but later I may find a 700r4.
-Does my Howell Harness wiring need wires for a 700r4? YOU CAN HAVE WIRES FOR THE TORQUE CONVERTER LOCKUP BUT IF YOU RUN A TH350 JUST GET A MANUAL TRANSMISSION PROGRAM
-Or should I omit those and if I decide to upgrade later, use a mechanical 700R4 ( I think thats what the 4x4 one is in the 90 4x4 now)

2. Do I need VSS with the TH350? 700R4? YES, YOU NEED VSS FOR ALL. THEY OFFER A VSS UNIT THAT SCREWS INLINE WITH THE SPEEDOMETER

3. Does the Howell wiring come with wires for Neutral safety switch? NO SURE.

4. The guy I talked to at Howell said I may not be able to use the computer I have. Said it may need a new Prom Chip? THE PROM WILL BE FOR THE VEHICLE IT CAME OUT OF. THEY SHOULD BE ABLE TO DO A PROM FOR YOU FOR YOUR ENGINE AND DELETE VATS AND EMISSION STUFF.

Howell makes very nice harnesses.

notsolo · 04-02-2018, 03:53 PM

Can't answer all of that but, I put a Howell H242 in my Blazer, 1993 5.7Tbi..4L60 trans. ...this is an engine and trans computer harness, comes with 2 plugs for the trans. No other interior wiring.other than computer....no neutral safety switch. Dont know if you would need to reprogram if you didn't hook up the trans wiring. Howell seems pretty good about answering questions, keep asking for details.

72blazerblue · 04-02-2018, 04:02 PM

Quote:

Originally Posted by notsolo

Can't answer all of that but, I put a Howell H242 in my Blazer, 1993 5.7Tbi..4L60 trans. ...this is an engine and trans computer harness, comes with 2 plugs for the trans. No other interior wiring.other than computer....no neutral safety switch. Dont know if you would need to reprogram if you didn't hook up the trans wiring. Howell seems pretty good about answering questions, keep asking for details.

MARKDTN & notsolo, thanks for the replies that helps.

I have heard good things about Howell harnesses, so I plan to go forward with this harness to save me some time and headache.

......I am leaning towards that I won't need any trans wiring because I don't believe the 1990 comp I have has any mechanical trans hook ups, I think the 700r4 in that truck is all mechanical. Anyone confirm that?

I didn't see why I would need a new PROM for the computer I have, since I wasn't deleting the EGR or changing transmission capabilities?

10-26-2008, 06:25 PM	#1
Coalson01 Registered User Join Date: Oct 2008 Location: Weatherford, OK Posts: 32	TBI stand alone engine harness?? Hey guys, I'm planning on putting this '95 tbi 350 in my truck with a 700r4 behind it.. I have all the factory wiring harness and computor.. is there a web site that shows me what wires to delete or what it takes to convert the harness for easy hookup, tips, anything.. thanks zack

10-26-2008, 10:16 PM	#2
Coalson01 Registered User Join Date: Oct 2008 Location: Weatherford, OK Posts: 32	Re: TBI stand alone engine harness?? I forgot the most important part. My truck is a 69 SWB chevy, it has a inline six and a three on the tree i am thinkn about going with a painless wiring harness let me know what yall think or any tip thanks zack

10-26-2008, 10:34 PM	#3
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: TBI stand alone engine harness?? I am kind of in the same situation as you. I grabbed a complete TBI 5.7L and 700R4 out of a 1990 G-van including the completed engine and interior harnesses. I thought about reworking the G-van harness but for the hassle of doing that it might be worth purchasing a harness. After all, that G-van harness is 18 years old and the weather pack connectors are rather brittle. I found a decent looking harness on Ebay for a decent price from a place in Denver called Fuel Injection Connection. Do a search on TBI harness to see it. The problem is I don’t want to purchase their harness off of Ebay until I speak with this guy first. I left them two voice messages last week and they still haven’t returned my call. Come this next week I will spend an extra $100 and place my order with Howell Engine Development instead. If they FIC can’t return a call to sell you a harness just think of the service you will probably receive if you should have a problem with their harness. I am not much of a fan of anything from Painless. They are overpriced and they don’t even cover their harnesses with split loom! __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram

10-26-2008, 10:48 PM	#4
Coalson01 Registered User Join Date: Oct 2008 Location: Weatherford, OK Posts: 32	Re: TBI stand alone engine harness?? The painles is really expensive. I am thinking about trying my luck and work threw the factory harness or maybe finding a cheaper harness somewhere. I dont blame you for not wanting to buy a harness from somone that want even return a phone call thanks for your help hopefully someone else has done this allready a can help us threw the process

10-27-2008, 07:16 AM	#5
70GMCer Senior Member Join Date: Apr 2005 Location: Joppa, Maryland Posts: 4,408	Re: TBI stand alone engine harness?? There's a site that was posted on here a while back, that you could send your old harness to, and they rework it to remove all the unwanted wires & test everything. Maybe do a search on here, or someone will chime in that site. __________________ 1997 GMC Sierra Ext 1965 Mustang

10-27-2008, 01:41 PM	#6
PanelDeland I am a Referee of life. Join Date: Jun 2000 Location: Greensboro N.C. Posts: 13,992	Re: TBI stand alone engine harness?? Chevy Hi Performance usually has an ad for a company that does custom harnesses for the swaps.I think they are fairly reasonable. __________________ The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil"

10-27-2008, 02:28 PM	#7
Coalson01 Registered User Join Date: Oct 2008 Location: Weatherford, OK Posts: 32	Re: TBI stand alone engine harness?? Thanks 70GMCer I believe I found the one you where talking about. Is it speed scene wiring (speedscenewiring.com) I am looking into it now. thanks for yalls help I am still looking and open for ideas so everybody feel free to put in your comments thanks Zack I am fixn to check out Chevy Hi Performance thanks PanelDeland Last edited by Coalson01; 10-27-2008 at 02:30 PM.

10-27-2008, 03:28 PM	#8
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: TBI stand alone engine harness?? http://www.speartech.com/ is another company, but I don't know if they do TBI. Howell is the one most of the people I know of use. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

10-27-2008, 09:46 PM	#10
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: TBI stand alone engine harness?? I ordered mine today from Howell. Most of the peeps reworking harnesses are working on 1996 and later OBDII type harnesses and not so much with TBI or even TPI stuff. If you really think about it these TBI engines are getting old. Even if someone reworks it for you, you still have a 15 + year old harness that probably has brittle weather pack connectors, etc. So, why bother paying someone to rework one….. Buy one from Howell for $325 and be done with it. Howell makes nice quality stuff.....better than Painless! The folks from Fuel Injection Connection still haven’t returned my calls. If they ever do, I can’t wait to tell them they lost a sale for not returning phone calls. __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram

10-27-2008, 10:12 PM	#11
Coalson01 Registered User Join Date: Oct 2008 Location: Weatherford, OK Posts: 32	Re: TBI stand alone engine harness?? I am also going to go with Howell (as soon as i get the $$) thanks everyone. I am also fixn to take and post some pics of my 69 as soon as I figure out how haha! I have a lot more question on other stuff for my truck so ya'll will be hearing a lot from me, i'll try not to ask to many questions, and thanks again for yalls help Still learning my way around the site, but I am loving it. I spend way too much time on here, but I can't turn it off haha. Too much useful info.

04-02-2018, 03:51 PM	#13
MARKDTN Registered User Join Date: Jan 2011 Location: Chattanooga, TN Posts: 2,165	Re: TBI stand alone engine harness?? 1. TRANSMISSION. I plan to mate the TBI to my TH350, but later I may find a 700r4. -Does my Howell Harness wiring need wires for a 700r4? YOU CAN HAVE WIRES FOR THE TORQUE CONVERTER LOCKUP BUT IF YOU RUN A TH350 JUST GET A MANUAL TRANSMISSION PROGRAM -Or should I omit those and if I decide to upgrade later, use a mechanical 700R4 ( I think thats what the 4x4 one is in the 90 4x4 now) 2. Do I need VSS with the TH350? 700R4? YES, YOU NEED VSS FOR ALL. THEY OFFER A VSS UNIT THAT SCREWS INLINE WITH THE SPEEDOMETER 3. Does the Howell wiring come with wires for Neutral safety switch? NO SURE. 4. The guy I talked to at Howell said I may not be able to use the computer I have. Said it may need a new Prom Chip? THE PROM WILL BE FOR THE VEHICLE IT CAME OUT OF. THEY SHOULD BE ABLE TO DO A PROM FOR YOU FOR YOUR ENGINE AND DELETE VATS AND EMISSION STUFF. Howell makes very nice harnesses. __________________ '83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project

04-02-2018, 03:53 PM	#14
notsolo Registered User Join Date: Apr 2008 Location: Md Posts: 2,482	Re: TBI stand alone engine harness?? Can't answer all of that but, I put a Howell H242 in my Blazer, 1993 5.7Tbi..4L60 trans. ...this is an engine and trans computer harness, comes with 2 plugs for the trans. No other interior wiring.other than computer....no neutral safety switch. Dont know if you would need to reprogram if you didn't hook up the trans wiring. Howell seems pretty good about answering questions, keep asking for details. __________________ http://67-72chevytrucks.com/vboard/s...d.php?t=635605

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