95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

3.0L to 3.4L engine swap Q's

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Old 11-01-2003 | 11:04 AM
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3.0L to 3.4L engine swap Q's

I have a few questions that have yet to be answered from searching(lots of it).

1.Can I use my 3.0L oil pan or do I need an oil pan from a T100 4x4 and if from a T100 which engine, 3.0L or 3.4L?
2. can I use the 3.4L wiring harness as a direct replacement of the 3.0L wiring harness? if not what would i have to modify on it?
3.How do I get the gauges to work? do they hook up the same on the 3.4L as on the 3.0L?
4.Do i need a bell housing from a R150F 3.4L donor truck or can I use my stock one?
5.What do I do for and exhaust?

most of these questions have controversy so that is why I am asking them.any other info is greatly appreciated since i will be doing this swap hopefully with in the next 2weeks.
Thanks for the help!!!
Old 11-01-2003 | 11:35 AM
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I can't answer any of those questions....sorry. But I do have the same rig as you ('91 v6) so I'll be watching this thread very closely. Please let us know how the swap turns out. BTW, are you doing this yourself or is there someone here in the Portland area helping you ?
Old 11-01-2003 | 11:39 AM
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1. The 3VZE oil pan and pickup should work.
2. Get 3.4 ECU and ORS harness.
3. Dunno
4. No
5. Get headers and then do custom crossover to stock cat position.

EDIT: Fixed

Last edited by Cebby; 11-01-2003 at 03:14 PM.
Old 11-01-2003 | 11:41 AM
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cant imagine you missed this, but it answers some of your questions.
https://www.yotatech.com/forums/show...light=junk+3.4

edit: i want to come see this!! can i come play?

edit again, looks like cebby is wrong!!

Last edited by its2slo; 11-01-2003 at 11:47 AM.
Old 11-01-2003 | 12:05 PM
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Originally posted by its2slo
edit again, looks like cebby is wrong!!
Oops - my bad on the harness. I forgot about the ORS unit. I'd still attempt to do my own with a 3.4 donor harness.
Old 11-01-2003 | 12:07 PM
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what about the pan and the bellhousing? looks like he can just use the 3.0 ones?
Old 11-01-2003 | 12:25 PM
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My understanding is that the 3.0 pan won't clear the front diff when on the 3.4. The link you posted is for a 2WD, so there may be other issues that he did not encounter.

Looks like I confused the bellhousing part with the 7MGE swap. I "thought" the guy who did this swap in Ontario had an issue.

The info on the guy in Ontario that did this swap in a 4WD 2G 4Runner would be more appropriate. Lemme look for it...

Last edited by Cebby; 11-01-2003 at 12:26 PM.
Old 11-01-2003 | 12:28 PM
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Originally posted by its2slo
cant imagine you missed this, but it answers some of your questions.
https://www.yotatech.com/forums/show...light=junk+3.4

edit: i want to come see this!! can i come play?

edit again, looks like cebby is wrong!!
That is pretty much THE thread for a 3.4L swap.
If you have any questions, email Matt who did the swap in the thread.
I am sure he will answer all your questions.
Old 11-01-2003 | 12:39 PM
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arent the blocks identical?
Old 11-01-2003 | 03:12 PM
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Here's the link I was thinking of. It looks like his site is down, but you can see the thread at least. The guy is Dave Gio from BC. He has since done a SAS too.
Old 11-01-2003 | 03:16 PM
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looks like he found someone else whos done it too.
http://www.4x4wire.com/forums/showfl...5&o=14&fpart=1
Old 11-01-2003 | 06:35 PM
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A guy on 4x4 wire has done this swap already. Heres the website I hope i can help u out, if not then Sorry.

http://www.4x4wire.com/toyota/projects/basham_4runner/
Old 11-02-2003 | 07:07 PM
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damn his thread on 4x4 wire blew up.
Old 11-03-2003 | 01:55 PM
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Originally posted by its2slo
damn his thread on 4x4 wire blew up.
Waddya mean? It's still there...
Old 11-03-2003 | 04:16 PM
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its da bomb

Old 11-03-2003 | 04:23 PM
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From: Tigard, Oregon
thanks
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