First time swap. LQ9 into 95 OBS

[kewljay223]

thanks for the response mikey. man work has been hactic. if this keeps up ill never get this swap started!! but i was able to get the motor out of my truck today and on the stand. its nice to just see it on there.beautiful sight! haha

ok well i understand that ill need to flash it for the 80e and everything else that comes with it. but those only came in the HD trucks so im pretty sure it was a 60/65/70. either way, all those are basically the same as far as i understand except the internals are stronger as the numbers get higher.. so that makes me think the way its programmed now should work fine... please correct me if im wrong.

and what do you mean when you say i need the pcm to be flashed to run the motor in my older vehicle??? how would it even know. as long as its set up for the motor and trans its controling, what does it care what its in? ASSUMING the original trans was a 60e, which there is a great chance it was, and thats what i have, other than the setup being in a different body vehicle, what else is different? as long as i power the pcm, connect the required sensors, wire my gauges, and remove vats, shouldnt the thing fire up and run? am i not seeing something? im new to this whole computer thing but it seems that simple to me... its not like what a lot of others do where they are using the pcm from the older car or from a completely diff car. THAT, i understand the need to flash. but this is the pcm from the escalade....

and yeah i have the short crank, so ill have to find me a spacer... thats next on the list on top of the sensors.

and i just came up with an idea today to get around buying the cats at the moment. that $700 will be better used getting the needed parts to get it going. im going to fab up a temporary exhaust and weld on the bungs for the o2 sensors. someone confirm this will work...

well i work all day for the next 3 days so i wont really have time to get my hands dirty. but ill be on the search for sensors, spacer, and dbw peddal/module.... ill keep you posted. keep the info coming!!! thanks!

[kewljay223]

how do you post the large pics?

[Mickeymotormount]

You will need to flash the PCM to get rid of the VATS(Vehicle Anti Theft System). That's the whole deal with the computer chip key, etc. If the PCM doesn't see the signal from the computer chip key, it won't let the engine run. There are some kits out there that plug into your harness that "fool" the PCM into seeing the code for the key. I opted to just have the PCM flashed.

Sounds like your trans should work fine.


Keep us posted!!

[Mickeymotormount]

how do you post the large pics?

I use Photobucket. From there, each picture is given an IMG code. Then, when you go to post, just insert the IMG code in the post for the pic you want to post.

[kewljay223]

I use Photobucket. From there, each picture is given an IMG code. Then, when you go to post, just insert the IMG code in the post for the pic you want to post.

Oh ok. I have photo bucket but I thought it just posted links instead of the actual picture. But maybe thats because I was using the url instead of img code. I'll try that next time. Thanks.


I'm gonna check out hp tuners and efi live and see if I can get the vats removed myself. ive never done it before but im not bad with computers. I won't be using it too often as I just won't be swapping motors all the time. But it might be a useful tool to have. I have a couple buddies who want to try a swap so it could come in handy then, and also minor tweaks for future upgrades... :-) is there one recomended over the other?

[kewljay223]

the DBW pedal/module is the same from a gmc truck as a chevy/caddy correct? found one on car part that i can pick up today if its the same

[kewljay223]

hey again. just an update. picked up the DBW pedal/TAC/Harness today out of an 05 escalade so it should work perfect. and i got the harness all disconnected and removed from the motor yesterday so i can start going through it. labeled everything that was hooked up but there is still a lot that wasnt that i need to figure out what they go to. ill dive into it in a day or two.






i also got a list of the rest of the major parts i need which im ready to purchase tonight. please let me know if i missing anything so i can add it to the shopping cart.

dirty dingo mounts
Walker CalCat Catalytic Converters 81713
Bosch Automotive 15730 - Bosch Premium Universal Type Oxygen Sensors X 4
Chevrolet Performance 12563532 - Chevrolet Performance Flexplate Shim
Chevrolet Performance 19257940 - Chevrolet Performance Flexplate Bolts X 6
ACDelco EP381 - ACDelco Electric Fuel Pumps
Allstar Performance ALL34153 - Allstar Performance O2 Sensor Bungs X 4
PCM tune

i still need to do something about the fuel tank pressure sensor in my obs tank that doesnt have one.. i read somewhere that they are used on returnless style systems and i have two lines on my rails... so i i will be using the return line setup since the truck already has the lines. do i need the pressure sensor? if so can i just add it to the tank or is there more involved? also looks like im going to need a fuel level sensor too??? can that be added? i know nothing about all the emissions crap and thats whats got me confused and unfortunately that is a major part of this project. ive tried looking all over the internet but not many people are doing emission swaps so there is little info. anyone with smog knowledge please chime in!!

[kewljay223]

thanks mikey for the tip on posting pics. worked perfect!

anybody know where i can get the piece to weld onto the exhaust pipe to bolt to the manifold? idk what its called. the thing thats shaped kinda like a triangle with three bolt holes and one big hole in the middle for the exhaust to flow. i thought it was a "flange" but looking through summit they consider a flange a gasket... i guess its more like a collector flange but that seems to be more geared to headers. i need 2 of them so i can mock up the exhaust so i can get it running to take to the exhaust shop to do the final install.

[Mickeymotormount]

You are right on in calling them flanges. There are some on Ebay:

http://www.ebay.com/itm/LS1-Exhaust-...d530dd&vxp=mtr

http://www.ebay.com/itm/Chevrolet-LS...3a6af1&vxp=mtr

[kewljay223]

i must be doing something wrong because nobody has mentioned that the clamshell bracket hits the a/c bolt boss on the passenger side and hits the oild looer lines on the driver side... i got the clamshells all ground down smooth, got the adapters on the block WITH THE TRIANGLE PORTION TOWARDS THE FRONT AND THE TWO HOLES ARE ON TOP WITH THE SINGLE HOLE ON BOTTOM. then when i try to put the clamshell on, it hits the block and cooler lines. am i missing something? do i have to grind one or the other and move my oil lines? ive looked around and cant find anyone else with this issue. im tyring to put this thing in but i cant get the damn brackets on! anybody?