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Old 07-16-2008, 06:37 PM
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Cadillac 429 Hydramatic combination opinions

I'm trying to gather information about a 64 Cadillac I have that belonged to my dad. From what I know it has the 429 and a Hydramatic trans. I orginally thought the car would have the Turbo Hydramatic but my older brother said it was a four speed and it had about 100 bolts (kidding) holding it in. The car has sat for about 15-16 years my dad (passed on) who was an old school mechnic, rebuilt the engine spending about $1,200 in mid 80s money and it probally has less than 1000 mile on it since. From what understand (some?) eariler 64 Caddys had the 429 with the Hydramatic which will not exchange with the later Turbomatic models, something with the crank shaft?. I'm kicking around the idea of putting this drive train in a '56 F100. Thinking the Caddy was a 4500 lbs car it should be able to shread the lighter weight truck. Any opinions about the 429/Hydramatic combination?

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Old 07-16-2008, 09:42 PM
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Check here. Ok fixed it. Don't know where the first link got screwed at.
http://www.hotrodders.com/forum/sear...archid=1882374

Last edited by SSedan64; 07-18-2008 at 01:07 AM.
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Old 07-16-2008, 10:10 PM
gdb gdb is offline
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Hi Starlifter, I put a 64 cad. 429 in a 57 chevy cameo. It would break the tires loose at 65mph and got 22mpg when driven normal.
Cheap HP.


gdb
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Old 07-17-2008, 04:53 AM
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Quote:
Originally Posted by SSedan64
I see your from Macon. I live in Warner Robins. The 64 Caddy I'm refering about is in Twiggs County. THe link you listed didn't work for me.
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Old 07-17-2008, 04:55 AM
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Quote:
Originally Posted by gdb
Hi Starlifter, I put a 64 cad. 429 in a 57 chevy cameo. It would break the tires loose at 65mph and got 22mpg when driven normal.
Cheap HP.


gdb
Wow! thats what I'm talking about! What trans was it Hydramatic or Turbo Hydramatic?
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Old 07-17-2008, 05:30 PM
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Hydramatic
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Old 07-18-2008, 01:13 AM
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Quote:
Originally Posted by starlifter
I see your from Macon. I live in Warner Robins. The 64 Caddy I'm refering about is in Twiggs County. THe link you listed didn't work for me.
Starlifter I fixed the link. I think Crosley knows some Mods for the Hydramatic. Read through some of the posts in the link.
I grew up in Twiggs Co., Jeffersonville. Relatives still live there.
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Old 07-18-2008, 09:38 AM
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If it is truly a 4-speed '64 Hydramatic, not a 3-speed Turbo-Hydramatic, it is not a very good tranny. After 1955 ('53-'55 are the legendary racing models), GM redesigned the Hydramatic, keeping the fluid coupling but adding an additional fluid coupling replacing the front clutch (a really strange configuration by any standard) and replaced bands with weaker sprague clutches. Those were called 'Jetaway' (in expensive cars for the duration) and later Roto-Hydramatic or 'Slim-Jim' (In cheaper cars in mid 60s) and are normally replaced unless the car is being restored to a number matching concourse queen. In 64 GM went to the far superior Turbo-Hydro design. I would replace it if it were my car.
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Old 07-18-2008, 05:51 PM
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Will the Turbo modle interchange? I thought I read somrthing about a specific crank shaft for the Hydramatic type.
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Old 07-18-2008, 08:36 PM
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Just get the yoke with the new tranny and have your local drive shaft shop weld it on the shaft. Will probably need to adjust the length of the shaft anyway. No biggie, just mount the engine and tranny and drag out the old Stanley Tape Measure and see what you need in the new shaft.
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