WTB Cadillac 500 crankshaft

Discussion in 'For Sale/Wanted' started by Red98422, Jun 25, 2018.

  1. Red98422

    Red98422 New Member

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    Title says it all, I would prefer local but will accept those that need to be shipped. Please let me know what you have. Thanks in advance
     
  2. Ted in Olympia

    Ted in Olympia Well-Known Member

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    I have a 1970 Eldorado Parts car in Olympia that I will sell for $800 but you must take whole car. The engine I think is frozen and is of unknown condition so it is kind of a gamble but the crank should be the 094 crank and worth $400. If you are energetic you can part out the rest of the car and still have another transmission for your project. Also has the desirable 1970 non-smog heads and pulley system.

    Will also throw in two .030 blocks.

    I know pig in a poke. I'm just trying to clean everything out. Has a wrecking yard bill of sale that is as good as a title.

    Have you taken the crank that you have to a machine shop and make sure that you cannot have it ground? Might clean up with a 20-20 cut?

    Ted
     
  3. Red98422

    Red98422 New Member

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    That is truly is a hell of a deal but my living arrangements prevent me from having a parts car (I live and work at a marina) I haven’t taken it to a machine shop For a couple reasons, the first one is I wouldn’t know which one to trust (only been in this state for 5years) and secondly I have pretty well assumed the crank to be wasted has some pretty deep gouges on a few of the journals. However thank you for the offer and if you know of a decent shop please let me know.
     
  4. Ted in Olympia

    Ted in Olympia Well-Known Member

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    The one I use and always been very happy with is,

    Olympia Engine Builders
    1045 S Bay Rd NE, Olympia, WA 98506
    Phone: (360) 943-9550

    It is a one man shop and Bruce has done several Cadillac engines for me and I never had a problem. He does not do crankshaft grinding in shop but it seems like where ever he sends it does a nice job. I think he is going to retire soon and I don't know where I will go then.

    In Tacoma there are several production engine builders (or used to be) like Pacific or Waterhouse that I'm sure can give you a quick opinion as to the condition of your crank. You also have one of the best camshaft places in Tacoma, Delta cams that is always very helpful. For suspension and spring work Right Way spring in Tacoma is an excellent shop.
     
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  5. Red98422

    Red98422 New Member

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    Thank you for those contacts, I am going to be calling shops up soon anyways for my block. Even though I’m pretty sure it’s a total loss on the crank can’t hurt to ask.
     
  6. 8ad-f85

    8ad-f85 Well-Known Member

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    The crank is almost never a total loss but for a simple regrind it might not fit the bill.
    Even rather deep gouges can be ground past when reducing journals in custom/stroker builds.
    There are industrial specialists that weld up cranks (even some castings) but they tend to steer clear of the bargain mindset of the auto rebuilding market.
    A good thing about taking a chance on a used Caddy crank is that they might be in acceptable condition as is, with a little cleanup. I just sent two perfectly usable cranks to the crank shop for massive material removal...it might have felt better to send some through with a little wear instead.
     
  7. 8ad-f85

    8ad-f85 Well-Known Member

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    Not sure what type of build you are planning but Chrysler rod journals would grind past the most severe gouge, provided it isn't cracked. Not difficult or overly expensive to just use those rods/pistons if you are considering rebuilding stock rods and replacing pistons.
     
  8. Ted in Olympia

    Ted in Olympia Well-Known Member

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    Are you talking about the 7.1 rods from MTS and pistons?

    I guess the stock 440 rods is only .010 longer than the Cadillac. Can you tell us more what has to be done to use these rods with stock Cadillac Pistons?

    Ted
     
    Last edited: Jun 25, 2018
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  9. 8ad-f85

    8ad-f85 Well-Known Member

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    I didn't mention anything about using Chrysler rods with stock Cadillac pistons, but offhand I bet the rod's small end could be bushed down and any width differences easily handled.
    I'd stick with piston choices that match rod wrist pin bores, like 454 pistons with either aftermarket Chrysler (.990) or BBC 7" rods to get the journal cleaned up.
    Olds 7" rods have been used plenty of times but the OP might have to grind the crank beyond the Cad/Olds shared bearing size.
    There's many possible combos with a little offset grinding involved, you'd have to peruse the many choices and work with the specific crank involved to come up with one.
    I was offering the suggestion based on the costs of replacing an expensive crank, possibly shipped, possibly regrinding and the alternative being to spend a marginal amount more on the original crank to fit another available rod/piston combo.
    The OP might be replacing pistons or possibly honing the rods anyways...maybe replacing one if there's a banged up crank involved.
    I am making an assumption based on not recommending machining a crank and then re-using questionable or worn stock pistons/rods.
    Just something to consider along with the total costs of the bigger picture.
     
  10. Ted in Olympia

    Ted in Olympia Well-Known Member

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    Understand, thanks for expanding the post since the OP is most likely new to the Cadillac 500.
     
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  11. Red98422

    Red98422 New Member

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    Thank you for the responses, yes definitely new to the cad 500! in short my entire rotating assembly will need to be replaced (insert the lovely smell of 120w) So yes I’ll be in the market for rods and pistons when that time comes, so it is nice that options are available to me in that department, and thank you for taking the time to explain it. I am not attempting to go with a max effort engine ($$$) but have considered attempting to have a shop offset grind the crank to save it. However that being said I was hoping to see what was available to me as a first option even with an OEM crank I would need new rotating assembly...judging from the responses so far it wouldn’t be amiss to have more than one crank as they seem to be related to hens teeth.
     
  12. 8ad-f85

    8ad-f85 Well-Known Member

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    Mopar and BBC rod/piston combos can be found sometimes at a price competitive to the milder choices for Cadillac.
    If there's a certain amount of rudimentary machine work involved, some of the sizes are fairly close and subsequent problems dealt with accordingly.
    I should have saved all the stock sized Mopar forged pistons I'd sold off years ago (4.320, 4.350).
    BBC +.060 is 4.310...a light hone for a Cadillac bore in good shape and saves about $120 from the bill if it works out that way. Both brands have inexpensive, common rings.
    Not many stock sized Mopar builds happening anymore, but occasionally Ebay might have something as there's still NOS stuff trading residency at garages and shelves .
    If I understand your budget goals, a non-max effort thing should be doable without using suspicious parts.
    Cadillac specific performance parts are probably worth the extra price as these kinds of builds described can be challenging.
     
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  13. Red98422

    Red98422 New Member

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    8ad-f85I have sent a PM
     

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