Topic: 5VZ Swap

[velasco]

so I know you guys have probably heard this question hundreds of times but I bought a 3.4 the other day for $550 it's going into my 91 with a 5 speed and it came from a automatic 97 4runner and i didnt come with a wiring harness I need to know if I can use a automatic wiring harness with a manual ecu and make it work out.

[COToy91]

You can repin the auto harness to work with the manual ECU, but it is a pain. And depending on waht year the auto harness (97 it seems) the plugs copuld possibly be different than the manual ECU that you purchase. Early year Auto ECU's used the same plugs so I think you will be ok.

For way more info on 3.4 swaps, including a ton or wiring help go here---> www.yotatech.com/f160

[dntsdad]

so I know you guys have probably heard this question hundreds of times but I bought a 3.4 the other day for $550 it's going into my 91 with a 5 speed and it came from a automatic 97 4runner and i didnt come with a wiring harness I need to know if I can use a automatic wiring harness with a manual ecu and make it work out.

This is exactly what I did. I have a 92 pickup, 97 Runner 3.4 and used the stock auto harness but repined it to a 97 manual. I bought a 97 Manual ECM and everything works fine and passed the strict California laws on motor swaps. Get the same year and model ECM just manual as there are differences between the Runner and taco motors such as EGR etc.

I have a fairly decent swap thread and detail the process from beginning to end...........well almost end cause I dont think that it ever ends......Not the swap but everything else.............I address exactly what you asked about http://www.yotatech.com/f160/had-officially-began-3-0-auto-3-4-manual-92-ex-cab-196823/index11.html

[yotaneck13]

i am planning this same swap with in the next 2 weeks i have a 3.4 out of a 95 t100 also auto and i just wired the neutral safety to think it was in park no problem other than you can start it in any gear and with out the clutch in

[dntsdad]

i am planning this same swap with in the next 2 weeks i have a 3.4 out of a 95 t100 also auto and i just wired the neutral safety to think it was in park no problem other than you can start it in any gear and with out the clutch in

You should get a check engine light like that. Do you? Everyone that I have seen do that does.

In California, a Check engine light is an automatic fail for emissions testing so that cannot be done if you want to be legit and legal. If you dont care about the light being on then thats probably the best way to go. It would just drive me nuts on a daily driver.

[velasco [OP]]

Well now i have another question    i bolted the tranny and t-case to the 3.4 today. im using my original 5 speed from my 3.0 and i noticed as i bolted it up that from about half way down the bell housing there is nothing to bolt on anymore and the bottom of the fly wheel is just in the open is there anything i can do about this??

[yotaneck13]

You should get a check engine light like that. Do you? Everyone that I have seen do that does.

In California, a Check engine light is an automatic fail for emissions testing so that cannot be done if you want to be legit and legal. If you dont care about the light being on then thats probably the best way to go. It would just drive me nuts on a daily driver.

if you pull the bulb out the check engine light will go out and then pass lol no i did get the light but it was on befoe that for other things its always on

[yotaneck13]

hmm... mine didnt do that i got my tranny out of my 88 runner with a 3.0???

[slabcs]

Take the bellhousing stiffeners off your 3.0 and bolt them onto the 3.4 block.  There is supposed to be a flywheel cover sandwiched between the bellhousing and bellhousing stiffeners.

I don't know if "bellhousing stiffeners" is the correct way to refer to them but I heard that once and it stuck in my head... They're just the little brackets held on by two 14mm's and bolt to the bellhousing with another two 14mm's.  It makes sense if you look at it.

[dntsdad]

Take the bellhousing stiffeners off your 3.0 and bolt them onto the 3.4 block.  There is supposed to be a flywheel cover sandwiched between the bellhousing and bellhousing stiffeners.

I don't know if "bellhousing stiffeners" is the correct way to refer to them but I heard that once and it stuck in my head... They're just the little brackets held on by two 14mm's and bolt to the bellhousing with another two 14mm's.  It makes sense if you look at it.

this is right but I didnt use mine.

[Dingman.]

Slabcs, tried sending you a pm but your inbox is full. 

[slabcs]

Made some room.