90s 3.9 v6

No need to verify make and model of a donor car or for parts.
The bell housing pattern is the same on the back of the block and the crank is in the right spot. Any small block transmission will bolt right up. The flex plate from ether will work.

The V6 engines came with the overdrive trans which were the 904 variant. A-500, RH 42? I keep forgetting that number….

The early 904’s have an odd spline count of *I think* it was 18.
(I should remember this since I have one and it was a bear to find a converter for it.)
Just make sure the front of the converter fits the rear of the crank. It should be super close fitting.

Below is a picture of the hub on my 727 converter, the measurement may not be dead on as it was a bit of a pain to do where it sits. But that’s the idea…. That hub sits in the rear of the crank.

The stock flex plate uses small (*Again I think) 5/16 bolts. ES to source from Summit and other places. If you need to order a flex plate, just say it’s for a 904.

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