- Mar 16, 2011
I.D designs makes an adapter that bolts a th400 to a 4.0. 4l80 is the same pattern.
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like i was asking... maybe better to just put a overdrive unit on the c4 since you already have that.I would put it close.
I would much rather put a th350 behind it personally.
The converter is going to suck power and then the mass of the assemblies inside will eat the rest.
220 ft lbs ain’t bad from the sohc. I’ll bet it’s still an improvement.