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Need help, what engines fit my -53 Pontiac Hydra-Matic?

Discussion in 'The Hokey Ass Message Board' started by SwedeVedette, Jan 17, 2013.

  1. SwedeVedette
    Joined: Feb 15, 2008
    Posts: 368

    SwedeVedette
    Member

    So I have read a few threads and as I understand it I have a dualrange Hydra-Matic?

    Well, is there any other engines that fit the gearbox without modification, inline 6 ohv or something? I want to keep original driveline but I need another engine to put in it when I fix the straight 8..

    Dont mind if I have to fab enginemounts and the car is 12v converted already

    Thanks!

    [​IMG]
     
  2. swe64
    Joined: Nov 22, 2010
    Posts: 415

    swe64
    Member

    hello .dual range hydros where in gm cars from 40-50s so finding a running engine that fit. your car is a inline so gmc 270 or earlier might fit.i dont think v8 is an option as you going to go back with the inline 8.i pull out my v8 gmc(pontiac) and hydro and put in an th700 and a 400 1967 pontiac engine.
    if you find one and not going to buy it .i am intested and if i find one ill contakt you.
    there is a 8hour drive to your town
    kenneth
    sweden
     

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  3. SwedeVedette
    Joined: Feb 15, 2008
    Posts: 368

    SwedeVedette
    Member

    Thanks, the 270 is it an 6 or 8 cyl?

    Anyone else know?
     
  4. swe64
    Joined: Nov 22, 2010
    Posts: 415

    swe64
    Member

    270 gmc only 1940-1962 all gmc trucks used them big truck also
    here is pic of my 1957 gmc 4-speed manual
     

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  5. swe64
    Joined: Nov 22, 2010
    Posts: 415

    swe64
    Member

    ok did not find pic of engine it is a6cl 1957 140 hp
     
  6. SwedeVedette
    Joined: Feb 15, 2008
    Posts: 368

    SwedeVedette
    Member

    I got a new question, how much trouble would it be to fit a straight eight with 4-step automatic trans from a -47 Olds in my Pontiac?

    There is one for sale close to me and that would be neat if it was an easy swap
     
  7. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    Just rebuild the engine. If you can't afford another car, take the bus. The idea of sticking some other engine in to drive in the meantime, makes no sense.

    The Olds is a completely different motor. You might be able to MAKE it fit, but it won't just bolt in.
     
  8. SwedeVedette
    Joined: Feb 15, 2008
    Posts: 368

    SwedeVedette
    Member

    Ok, thanks for the input!

    The "sticking another engine" part is because Id like to keep the original engine and put it back in later on sometime but I wont be rebuilding it anytime soon and to get the car registered and in traffic in Sweden I need to have the car running under its own power so to speak..
     
  9. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    What is wrong with the engine? Unless the rod is sticking through the block, a rebuild or overhaul will take less time and money than an engine swap.

    How is your compression? How is your oil pressure? How many miles on it? It may not be as difficult or expensive as you fear.
     
  10. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    Here is the message board of the Antique Automobile Club of America, Pontiac section.

    http://forums.aaca.org/f152/

    They should be able to advise you if anyone can.
     
  11. SwedeVedette
    Joined: Feb 15, 2008
    Posts: 368

    SwedeVedette
    Member

    Havent checked compression or oilpressure, the line to the gauge is plugged.. Miles, who knows, probably alot!

    Its smoking ALOT from the crankbreather(is that a real word?) and I imagine a knocking sound.. The generator is shot and the waterpump leaks alot.. Carter carb has seen alot of trembling fingers that didnt know what they were doing.
     
  12. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    Blowby indicates worn rings. Sounds like it is due for a rebuild. Wish I could tell you some good news.
     
  13. Smokey2
    Joined: Jan 11, 2011
    Posts: 919

    Smokey2
    Member

    _______________________________________________________________
    "carb has seen alot of Trembling Fingers "
    I Love It..........
    Never heard it described tha way ! Perfect.

    Good Luck on you endevor.

    Smokey2
     
  14. dan griffin
    Joined: Dec 25, 2009
    Posts: 506

    dan griffin
    Member

    Any engine that came with a hydro will work. The trans case are the same except 54-56 Olds slant pan. The bell housing on the front of the hydro has to fit what ever engine you use. That said there are 2 types of hydros. Low HP and big motors. Over 300 ci. and truck hydros have more clutches Wastedchildhood
     
  15. carbking
    Joined: Dec 20, 2008
    Posts: 3,980

    carbking
    Member

    That carburetor is one of the easiest carburetors to rebuild that has even been made. All you need is the factory shop manual (which you should have anyway), a straight-bladed screwdriver, a ruler to set the float level, a repair kit (readily available by mail order), some cleaning solvent, and some elbow grease.

    Jon.
     
  16. SwedeVedette
    Joined: Feb 15, 2008
    Posts: 368

    SwedeVedette
    Member

    What is included in the repair kits? I need meteringrods and I have no clue what kind of jets it is in it..
     
  17. carbking
    Joined: Dec 20, 2008
    Posts: 3,980

    carbking
    Member

    The main metering jets are included in the better rebuilding kits.

    Idle jets and metering rods are also readily available, at least on this side of the ocean.

    As overseas shipping can become expensive, perhaps you might determine various components you need that you may not be able to obtain locally, have them shipped to a common facility in the USA (a friend perhaps) and then have them all shipped to you in one container. International shipping for the first kilogram is expensive. After you pay for the first kg, heavier weights become less expensive per unit.

    Jon.
     
  18. Dale Fairfax
    Joined: Jan 10, 2006
    Posts: 2,585

    Dale Fairfax
    Member Emeritus

    Here's a thought: If you can get that Olds engine for the right price; rebuild IT (If it really needs it.) then install it in your Pontiac. The mount differences can't be THAT difficult to overcome. The displacements of the two are near the same (268 for the Pontiac vs 257 for the Olds.). They both have their manifolds on the right hand side-nobody would ever know rthe difference.


     
  19. Rusty O'Toole
    Joined: Sep 17, 2006
    Posts: 9,756

    Rusty O'Toole
    Member

    Or, he could rebuild the engine he already has and save a lot of time and money.Just a thought.
     

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