Thread: Isuzu 4HE1 Swap
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Old 05-29-07, 02:37 PM   #2 (permalink)
astr
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Join Date: Jan 2006
Location: Michigan/Costa Rica
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After looking at the 4BD1/2's, I'm also considering a 4HE1 swap. I am interested in using an automatic transmission and, as Sherpa on the 4BD1 thread suggested, the AW450 automatic that comes standard behind the 4HE1, appears to be related to the A440F Toyota automatic.

To pursue this direction further, I picked up a used AW450 and it looks to have the same bolt pattern between the bell housing and the main case and between the main case and the tail housing as the A440F in my FJ62.

I'm hoping that by bolting the bell housing and torque converter from an AW450 to the main body of the A440F, you can easily mate the 4HE1 to the LC drive train. The other alternative would be to keep the AW450 with the 4HE1 and bolt the LC T-case to the tail end of the AW450. This second approach may be possible as the T-case adapter on the A440F appears to have the same bolt pattern as the tail housing on the AW450. There may be other problems with this second approach such as having to also swap the output shafts.

Since I don't want to pull a perfectly good tranny out of my FJ62 to really find out, I decided to wait and find another A440F that I can tear down. Just this past weekend I picked up a junker FJ62 with all the parts and pieces that I need to try assembling a hybrid A440F/AW450 tranny. I'll post to this thread what I find out as I get further.

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