1995 Silverado TB350 to 2003 6.0l 4l80e Conversion

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07-12-2007, 12:40 AM
airdeano

<div class='quotetop'>QUOTE(blownshovel @ Jun 16 2007, 11:17 AM) [snapback]96964[/snapback]</div>

Quote:

EXHAUST:
Use 2003 exhaust manifolds...... where can I get some flanges that bolt up?
02 sensors how many and location? in Y pipe or near cat(s)[/b]

check your dealership. on warretny cat claims they replace the whole y-pipe, scavenge the cats
and toss the rest.. theres your flanges and HO2S bungs.
2 HO2S needs generally at the collection of the four tubes per bank.

<div class='quotetop'>QUOTE(blownshovel @ Jun 16 2007, 11:17 AM) [snapback]96964[/snapback]</div>

Quote:

FUEL SYSTEM:
Inline 255 Walbro
2000 Corvette regulated fuel filter[/b]

itd be cheaper to install the fuel pump in the tank and return the fuel from the return line of the
regulator on the manifold.

<div class='quotetop'>QUOTE(blownshovel @ Jun 16 2007, 11:17 AM) [snapback]96964[/snapback]</div>

Quote:

TBW:
The Engine is equiped with it and I believe I have the control Module but need an 03 newer pedal setup.[/b]

use the matching year pedal, i didnt and went throug hthree before finding that my 03 TAC module and
03 pedal work best than the 04/05 pedals...

<div class='quotetop'>QUOTE(blownshovel @ Jun 16 2007, 11:17 AM) [snapback]96964[/snapback]</div>

Quote:

WIRING:
Sort through harness Looking for 2003 HD2500 and 1995 C1500 diagrams....any idea? Alldata?[/b]

cross breading the two isnt for the timid, nor the easiest fix... fork over the $$$ for the proper swap
harness... youll spend money right and have the project closer to done...

<div class='quotetop'>QUOTE(blownshovel @ Jun 16 2007, 11:17 AM) [snapback]96964[/snapback]</div>

Quote:

Gauges:
Tach ?
Temp...in head hole
Oil Pressure? Where is a good location to tap in?
Odometer/speedometer? [/b]

tach output from PCM to tach module (baker or dakota digital) to factory tach (note: oe factory tachs are not
fast acting, accurate, nor reliable
temperature will be harder as your OE sending unit (in driver cyl head) is a monster size and really no
way to adapt it to the LS need... like a 15mm x 1.5 LS has like a 8mm x 1.75
oil pressure can be tapped from the oil pan
if youll keep your transmission harness and DRAC.. you speedo will be fine.

airdeano
08-07-2007, 11:34 AM
blownshovel

update:

First off thanks to many for offering advice (through forum and PM's). Also the folks that sold me some misc pieces I needed.

I wanted to test my wiring setup... I put a temporary install on top of the engine this morning. The motor cranked and fired for a few seconds then stalled. I did it a couple times and now am back to looking at more diagrams. It acted like it only saw ign power during cranking. I have the switched and 12V wires hooked up and confirmed that there is 12V during and after the cranking. Truck 2003 PCM, Harness, Motor

I hope to cleanup and finalize the wiring this weekend along with attaching the exhaust (need to finish the Y-pie I'm making.
08-07-2007, 08:02 PM
RedHeartbeat

You need the VATS disabled in the PCM if you haven't had it done already.
08-08-2007, 07:04 AM
blownshovel

Quote:

Originally Posted by RedHeartbeat

You need the VATS disabled in the PCM if you haven't had it done already.

I haven't done that. It must have to be performed for the truck to run?

Actually waiting to get the cash to buy hptuner/nelson baseline tune ... Guess I need to come up with that cash right now?

Thx
08-08-2007, 05:02 PM
blownshovel

EDIT will this work? Even in a transplanted scenerio?

Nelson Performance - Security Relearn for no start

well I was hoping to find a cheap vats fix.... I remember using resitors or something on a BMW conversion but it doesn't appear that will help me out.... Gonna have to beg the wife for the CC for nelson....
08-08-2007, 11:06 PM
RedHeartbeat

Gonna have to get the VATS turned off. The relearn will only work on vehicles equipped with the body control module and PCM. You can just get a hotrod tune that is a one time tune and he'll turn off whatever you need removed to get it going. I think he'll give you a discount later if you want to upgrade to a full tune.
08-09-2007, 06:32 AM
blownshovel

Quote:

Originally Posted by RedHeartbeat

Gonna have to get the VATS turned off. The relearn will only work on vehicles equipped with the body control module and PCM. You can just get a hotrod tune that is a one time tune and he'll turn off whatever you need removed to get it going. I think he'll give you a discount later if you want to upgrade to a full tune.

Thanks Again. I might have to get a tune only...and wait to get the Hptuner at a later date. Trying to get this rolling before the end of the month..
08-25-2007, 08:12 PM
blownshovel

wanted to give a quick update... moving along well today.

I sorted through some more wiring and started installing my aux fusebox for the misc (fans, FP, switched and 12V wires and relays.

I need to fab up some brackets to mount the late 90's caprice electric fans

figure out why the temp gauge isn't working

figure out why my trigger wire on the truck doesn't energize when switched

figure out the tach

figure out a method to get the speedo working

Buy/Find a fitting to add to the back of the intake for the power brake booster... I imagine the block off fitting just pulls out of the intake?

dang..I'm getting close I have to get this thing rolling soon!
08-26-2007, 07:45 AM
blownshovel

madce more progress late last night. Oil pressure and water temp sensors installed... hopefully things will keep rolling this morning....
08-26-2007, 11:12 AM
RedHeartbeat

Good Luck! Mine roared to life last night at midnight. It's a wonderful feeling. :thumb:

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