Re: 356 cuin SWAP to 359 cuin

Posted by Packard Don On 2022/5/29 20:09:14

Whether R9 or R11, you wouldn’t need an adapter plate as the transmission mount flange and the bell housing to engine pattern remained unchanged for years. Unless the flywheel is very thick (maybe 3/4” or even thicker), then it’s the flex plate and yes, they were substantial.

One thing to consider that Howard (HH56) already mentioned is the pilot bearing. It goes into a bore at the back of the crankshaft so you would need to get one that not only fits the bore but also fits the pilot on the transmission.

When the stock of replacement 356 engines was exhausted Packard actually offered the 359 as a field replacement for it and supplied it as a kit for the purpose.

The 359 in your photo has had its original aluminum head replaced with a different cast iron one. Since the 359 always had the aluminum head until it got replaced later in life, likely the compression radio is a little different than it was originally depending on which head was used.