Swap 94 3.0 auto to a 3.4 Manual
03-15-2017, 06:51 PM
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Swap 94 3.0 auto to a 3.4 Manual
Hi Guys,
I have been soaking in all the 3.4 swap stuff the last week. I bought a nice clean 123K mile 94 4runner Auto 4x4. Looks like it has the A340H trans and the 4.88 gears. The engine block is shot with a bad cylinder #4 broken rings, grooved and already .40 over.
Looking at re-manufactured 3.0 engines being from $1,700 to $2,500 So looking at doing the 3.4 swap. Like the increase in power and all the other advantages it seems to bring.
I am also considering doing a 5 speed swap at the same time. If I do the 5 speed swap do I use the 94-95 5speed or get a 5 speed donor rig with the 3.4 and use all of the parts for the swap. I understand if I keep the automatic a ecu from a T-100 is needed.
Looks like of great articles on the wiring. Probably do it like a aircraft wiring harness and make a board to wire it up on. Full size schematic per say.
Thanks for the valuable resource.
Phil
I have been soaking in all the 3.4 swap stuff the last week. I bought a nice clean 123K mile 94 4runner Auto 4x4. Looks like it has the A340H trans and the 4.88 gears. The engine block is shot with a bad cylinder #4 broken rings, grooved and already .40 over.
Looking at re-manufactured 3.0 engines being from $1,700 to $2,500 So looking at doing the 3.4 swap. Like the increase in power and all the other advantages it seems to bring.
I am also considering doing a 5 speed swap at the same time. If I do the 5 speed swap do I use the 94-95 5speed or get a 5 speed donor rig with the 3.4 and use all of the parts for the swap. I understand if I keep the automatic a ecu from a T-100 is needed.
Looks like of great articles on the wiring. Probably do it like a aircraft wiring harness and make a board to wire it up on. Full size schematic per say.
Thanks for the valuable resource.
Phil
Last edited by firepilot; 03-15-2017 at 07:21 PM.
03-18-2017, 07:40 PM
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Pretty sure 3.4 transmission is a drivers side drop while the 3.0 is a passenger side drop except for the t-100. I would think the 2nd gen stuff would be an easier fit but I'm no expert.
03-18-2017, 09:50 PM
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https://www.yotatech.com/forums/f160...stions-283734/ this will explain better.
