2nd Time Conversion

I've been a member for a short time now, and I've been wanting to do this conversion for a couple years. I've noticed that there are a lot of knowledgeable people that have done this type of conversion before on the OBS trucks. And that was what I've been waiting for so now things are starting to come around.

History: Was dads truck from the factory it was a 4.3L 5-speed. At 274,XXX miles and after a few transmissions my dad decided to convert to a V8. We pulled the V6 5-speed and built a TBI 355ci, with 700R4. After driving that past 300,XXX miles, dad decided to get something else. :duh: Thats when I inherited the truck. :lol: I drove that for a couple years and kept having trouble out of the 700R4. December 2005 was towed home from Corpus Christi, Tx with broken transmission at 387,XXX miles. Haven't drove it since. I decided it was time for more power.

Since I've owned it: I installed Hotchkis TVS 2/4 Kit, energy suspension bushings, including cab mounts, power slot rotors, russell steel braided brake lines, upper and lower ball joints, POR-15 the frame.

So now its time to upgrade the power train: From salvage yard 2003 iron block 6.0L out of Express Van 43,000 miles supposedly. I already have L92 heads and L76 intake, 73 Pickup 12-Bolt. Still looking for T56 transmission, possible custom built engine harness, and all the small items.

Anyway here are some pics. More too come!!!

http://i128.photobucket.com/albums/p...-Mo-Shun/6.jpg
http://i128.photobucket.com/albums/p...o-Shun/6-1.jpg
http://i128.photobucket.com/albums/p...o-Shun/6-2.jpg
http://i128.photobucket.com/albums/p...o-Shun/6-7.jpg
http://i128.photobucket.com/albums/p...o-Shun/6-8.jpg
http://i128.photobucket.com/albums/p...n/Truck-05.jpg
http://i128.photobucket.com/albums/p...n/Truck-04.jpg
http://i128.photobucket.com/albums/p...n/Truck-03.jpg
http://i128.photobucket.com/albums/p...n/Truck-01.jpg
http://i128.photobucket.com/albums/p...un/12-Bolt.jpg


http://i128.photobucket.com/albums/p...DSCF0418-1.jpg
http://i128.photobucket.com/albums/p...n/Truck-35.jpg
http://i128.photobucket.com/albums/p...n/Truck-33.jpg
http://i128.photobucket.com/albums/p...n/DSCF0578.jpg
Above December 2005 on Trailer :whack:
http://i128.photobucket.com/albums/p...n/Truck-40.jpg

Sounds like fun!
Im also going from a V6 to a 6.0 (Being built)
Good luck with the swap!!!

That Express van got effed* up though...Yikes... :sad: Look at the intake haha...

YOU WILL LOVE IT. THOSE ARE SOME STRONG MOTORS.

JAMEST

Nice. :thumb:

Dang, elbows deep into that. Very nice.

May I recommend Nelson Performance for your harness and tune. Allen and Jonathan are so very helpfull.

A "Thank You", to them.

Redheartbeat has vast knowledge of what is going to happen here.

A "Thank You" to him.

:thumb:

Jon

I called Nelson Performance on Friday. I asked them if their harness had a fly-by-wire option, and also about the LS2 injectors that are on the L76 intake . They told me that they don't have a fly-by-wire harness, nor the LS2 injector connectors. But he did tell me to check with Painless Performance, and they do have a fly-by-wire harness. Very nice people!

I have read / printed the conversion thread on LS1 into OBS trucks. If any questions arise I will be asking!! Including the long tube headers that he made for his own ride.

Thanx for the heads up!


Chris

rock on...

Back to the task at hand. I would also check with Speartech. I am pretty particular. All pics I have seen of Painless have not been loomed. Speartech uses nice wire loom. Not sure about the drive by wire though.

One of the first things I noticed was that the Painless harness didn't have a loom. That does worry me, and it looks really cheap that way, although I know the price isn't. I never heard of Speartech but will definitely check into them. Thanx! :hshake: Any other brand names?

I had my decision narrowed down to those two company's. Saved a bill going with Nelson. If you have to go with Painless (due to drive-by-wire) I found a company on the web that you can get loom from. Bought some for the remainder of my wiring so it all looks the same (as Nelsons harness loom). It was cableorganizer dot com. I used black expandable braided sleeving.

Thanks "RedHeartbeat" for the clean up here.

Wow. That's going to be sweet. Post up pics when you get it going!

Goin to pickup a 2004 GTO M12 T56 tomorrow morning from a local salvage yard. 11k miles, 6 month warranty, no core charge, and they have a carfax report on the GTO as well. Also was told that they do not cut the wiring harness, so maybe I can get one from them as well. Will post pics, hopefully over the weekend.

Thanx for all the info. The speartech harness is expensive, sure looks good though.

<div class='quotetop'>QUOTE(Slo&#045;Mo&#045;Shun &#064; Apr 30 2007, 12&#58;06 AM) [snapback]91792[/snapback]</div>

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I called Nelson Performance on Friday. I asked them if their harness had a fly-by-wire option, and also about the LS2 injectors that are on the L76 intake . They told me that they don&#39;t have a fly-by-wire harness, nor the LS2 injector connectors.
Thanx for the heads up&#33;
Chris
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chris, might i suggest superior harness (501) 9821050.
theyve got fly-by-wire and ls2 connectors.

airdeano

I will give them a call tomorrow, Thanx

Just a small update on progress...

http://i128.photobucket.com/albums/p...Picture095.jpg

http://i128.photobucket.com/albums/p...Picture097.jpg

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http://i128.photobucket.com/albums/p...n/IMG_0180.jpg

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http://i128.photobucket.com/albums/p...Picture067.jpg

http://i128.photobucket.com/albums/p...Picture071.jpg

http://i128.photobucket.com/albums/p...Picture076.jpg

The transmission and seats are from an 04 GTO, 11k miles, also from salvage yard&#33; 6 month warranty and no core charge &#036;1,500, and got the seats for &#036;400&#33;&#33; I also got the shifter knob, flywheel, clutch and pressure plate at no additional charge. The vehicle was hit hard enough on the right front corner, to bent / twist the passenger floor pan / seat track. Since I work in a shop and have access to shop press, it is now straight again. Saving me &#036;675 for a new seat track.

The engine is going to be stock short block, with heads, cam, and intake.
I do have a question. Since I&#39;m running the L76 intake which has the LS2 90mm throttle body. Do I have to run a LS2 computer, wiring harness, throttle pedal, and TAC module to be compatible with it? OR will another computer setup work? I know most likely the crankshaft reluctor wheel, and position sensor will have to be swapped. I also know that the LS2 has the cam and crank sensors at the front of the engine, and knock sensors on the side of the block. Lengthening and shortening of the harness is no problem. If I end up using the LS2 harness is this going to effect connector compatibility with coil harness, MAF sensor, alternator, ect....


Thanx in advance,
Chris

what size tires are you running? I love the 2/4 drop on your truck..exactly what i want.

<div class='quotetop'>QUOTE(TomTom &#064; Jun 12 2007, 08&#58;51 PM) [snapback]96589[/snapback]</div>

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what size tires are you running? I love the 2/4 drop on your truck..exactly what i want.
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They are 275-60-15&#39;s for now... after conversion... (with time to save &#036;&#036;&#036;) I want 18in Torque Thrust II&#39;s

how close do the goat seats come to matching up?

what are you going to run for a shifter and in what location???

I think S&P sells harnesses now too, and they sell them for drive by wire also.

Yeah, they sell every thing you&#39;d need to do a conversion. You just need very deep pockets to hold all the money you&#39;d have to send them to buy their harness. They are right proud of their parts and you have to pay dearly to get parts out of their warehouse. :laugh:

The GTO seats don&#39;t line up.... we&#39;re gonna have to fab some brackets.. no big deal. I have set the seats in the truck and kind of mocked them up... I think I might get away with using the stock shifter if not a slightly longer one. Its going to be to close to say until I get everything in. The seats sit lower... but they also seem to sit closer to the steering wheel due to the really think backrest.

I haven&#39;t been on here in a while, but I&#39;m suppose to be taking delivery of a Be Cool Cooling Module (Radiator, dual 13" electric fans, overflow tank... the complete kit) sometime this week. Will post :pics: when I have a chance.... things are starting to come around.