v6 engine swap - not the other topic

[gboogie99]

okay, I need to know exactly how involved in this whole engine swap thing. Every price I've gotten has been around 400-600 and i still have to buy the engine and all accessories.

I was told its only removing wire harness, draining fluids,disconnecting all hoses and about 12 bolts on the tranny and it should pop out. Personally, I think my boy is underestimating the project since I want to put a 02 engine in a 95 olds. How should this process actually go?

[SHOoff]

Actually, that doesnt sound too far off. It's not going to be a lot of work to get that motor out. Also not going to be a lot to put the new one in. Since you're replacing a 660 with a newer 660, there should be minimal modifications needed.

[gboogie99]

so what else do I need?

[bszopi]

Although it may not totally pertain, I'd goto www.3400swap.com and download the swap guide. Even though you aren't swapping in a 3400 (I don't think), pretty much everything to perform a swap in contained in that guide. And since it is a newer engine, alot of the little things (sensors, etc) should be covered as well.

[gboogie99]

it a 3100 im using, but thats pretty much the same, right?

[bszopi]

Yes.

[3400-95-Modified]

Keep me informed on your swap, i am trying to get one of your ECM's to work in my beretta on a 3400 and it just wont work right... I dont know if I need the buick TB or what to get this to work, right now I get a cam code and it leans out at WOT... any input on your progress or wiring changes you need to make would be appreciated.

[gboogie99]

man I havent even thought about wiring yet...

[3400-95-Modified]

You may not have to do any wiring, I'm just curious on if the Olds ECM will run the 02 3400... if you currently have a 3100 everything should line up minus the newer 3400 TB, you would have to use your original Olds one, along with the maf. other than that my only concern was the ECM being able to read the cam style. I have been told it should with no problem but I have yet to find that out.

[Manitcor]

You may not have to do any wiring, I'm just curious on if the Olds ECM will run the 02 3400... if you currently have a 3100 everything should line up minus the newer 3400 TB, you would have to use your original Olds one, along with the maf. other than that my only concern was the ECM being able to read the cam style. I have been told it should with no problem but I have yet to find that out.

Actually the TB will work, you need to swap the linkage from the old 3100 TB to the new 3400 TB so your stock cabling will work. Also if this is a 3100 thats coming out then the entire harness and PCM will run the 3400. Be sure to use the 3100 injectors. I can tell you now that youll notice more power but you wont be getting the most out of your new 3400 driving it with a 3100 based PCM.

Youll need to either go to ODBII (some early and all late 95 is ODB1.5 so best bet is to goto ODBII. 96 and higer are ODBII already) so you can tune your PCM or if you have full ODBI (94/ early 95) you can do tuning as well. If you decide to tune use the 22.5lb injectors from the newer model 3400s. You will need to splice the newer style connectors onto your injector harness.

If you have a 95 or earlier car you will lose your temp gauge in the swap as the temp sensor for the gauge is on the rear head. On later models the sensor was combined wth the coolant temp sensor the PCM uses. All they did was add a 3rd wire. If you want to keep your gauge you can goto the 3-wire sensor and splice out the green wire to go into the connector on your stock harness. Youll also need to splice on a newer 3 terminal connector on your stock harness.

Check out http://www.3400swap.com for some detailed info and pics.

Edit. Just looked at your sig.

You are most likely running ODB1.5. For the swap I reccomend just staying with your stock computer and harness and making the changes neccassary. If you are motivated and can afford to have your car down for trouble shooting for a week or so then go for an ODBII harness and PCM as well either from a 96 or 97 car of the same model and trim.

Yes swapping an 02 3100 is excatly like swapping in a 3400 from any car 97+. There will be some slight differences in mounts and timing covers dpending on the setup of yours and your donor car. Even though its stil a 3100 te 02 3100 sports the same topend as the 3400 so upgrading to ODBII and getting larger injectors is still reccomended for maximum driveability and performance.

The swap can be done for the price quoted if you can get your engine cheap enough and you can do the work yourself or have a buddy do it for pizza and beer. Most shops will kill you on the labor rate as this is typically an all day job.

Depending on how many miles your donor engine has I would reccomend replacing all the topend gaskets, o-rings and seals before putting the engine in. The gasket set is about $150 from felpro and it is much easier todo when the engine is sitting on a stand vs. when its in the car.

[bszopi]

Only thing you didn't realize Joe, was that even though he has a 95, he still has a PROM. As 3400-Modified was saying (and is in the process of doing), the Buick Cierra and Century got unique PCMs in 94 and 95.

[Manitcor]

Only thing you didn't realize Joe, was that even though he has a 95, he still has a PROM. As 3400-Modified was saying (and is in the process of doing), the Buick Cierra and Century got unique PCMs in 94 and 95.

A prom ODB1.5? Nice. Personally I would still go with an ODBII setup if you want to go for tuning and performance. If your just looking to swap the engine and have 4 wheels to get around then your stocker will do just fine.

[gboogie99]

yeah its a prom... they make a chip for the vin m 3100 from my car, can't remember the site tho.

I would rather have obd 2 just for tuning purposes because my cousin wants to rebuild my old engine for racing. If I let him do it, its probably gonna be a hybrid.

to 3400 modified: who did your prom?

[3400-95-Modified]

No one yet because I didn’t get it to run right, I still have some wiring issues, but Sinister performance is the one who will be working with me doing the tuning, he'll make a custom bin file e-mail it to me and I’ll burn it to my chips, I have a burner and the software so I can do that part, I just don't know what to tweak.

Also being a prom it would no longer be considered a OBD1.5... It's only 1.5 if it's flashed and doesn't have the 2 way communication abilities.

[gboogie99]

did you end up switching computers or are you using aftermarket equip?