View Full Version : 74 472/TH400 into 65 Calais?

05-28-13, 06:26 PM
Just wondering if this would be a straight "drop in"?
I have a 74 Fleetwood with rotted frame and there is a 65 Calais for sale locally; good body/frame but needs drive train and rad.
Help/advice appreciated.
The 65 is headed to the crusher if not sold after next weekend.


Has anyone done this swap?
It appears the Calais didnt get the 472 until 68 and the 65 had the 429.

05-28-13, 07:02 PM
I wouldn't think it would be too hard. You would think it would be a drop in since the 67 and 68 are practically the same car and one had the 429 and the 68 had a 472. You would think the frame mounts would be the same but I don't recall seeing hardly any 472's in those early 60's Caddys. somebody should come along with a definite answer. I hope they hurry up because I always hate to see classic Caddys getting crushed.

05-28-13, 07:49 PM
Thanks Al,
The 472 came out in 68 I believe.

Anyone else?
Feel free to offer any advice/insight.

05-28-13, 10:08 PM
Possibly your car already has a TH400 (switch pitch). If so, you are better than
half way home. Check for the vacuum mod on the right, or the P-R-N-D-2-1 pattern.
Bruce Roe

05-28-13, 11:20 PM
My car (74 Fleetwood) has the shift pattern as you describe.
You figure the 74 472/TH400 should drop into the 65 Calais chassis?


05-29-13, 07:05 PM
He knows the 74 has a th400 , he was asking if the 65 had that shift pattern...

05-29-13, 11:35 PM
If the 65 already has a TH400, its far simpler than conversion from a Hydramatic. However, a
65 doesn't bolt to a 472, and the 74 TH400 may have a different tail section length. Taking the
2 TH400s apart will allow assembly of one that fits the 65 body & the 74 engine. If original, its
way overdue for a new $28 seal kit, even if working fine. I'd recommend keeping the 65 switch
pitch function. Bruce Roe