Should I switch the engine and transmission out or just the transmission?

Asked by Dec 03, 2014 at 10:42 PM about the 1972 Datsun 240Z

Question type: Maintenance & Repair

Just picked up a 1972 240Z with an automatic transmission (stuck in first gear). I'm not
sure if I should fix the auto transmission, or just put a new engine and transmission in it.
Any clue on what will fit as far as the engine and transmission goes?

5 Answers


Given the popularity of old 240Zs there are probably several collector forums around that will have plenty of detailed how-to's and suggestions on restoring/rebuilding these cars. Personally I'd look at rebuilding the original drivetrain before swapping it out, unless of course it's a basket case or boat anchor.


If the engine runs well just have the transmission rebuilt. Probably easier than finding a used one out there.

1 of 1 people found this helpful.

I forgot to mention that the engine doesn't currently run.


I would have the engine rebuilt as well. For the same reason as above.

1 of 1 people found this helpful.

Why not swap over to a small block ford motor 302, theyre easy to maintain and find since ford used them in several types of cars and trunks. Heres a link:

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