Is it worth it?

New Hemi Engine Swaps

  1. Sinister.

    Sinister. Well-Known Member

    Messages:
    351
    Likes Received:
    0
    Joined:
    Aug 17, 2008
    Location:
    Kansas
    Local Time:
    4:19 AM
    I think I have a lead on an '03 truck 5.7.
    Apparently it broke a valve spring and dropped a valve.
    He's asking $150 for the engine. It looks like it might have the wiring harness, but no accessories.

    If it did drop a valve, how much do you think it would cost to repair? Gaskets, valve, spring set, single piston?
     
  2. Uhcoog1

    Uhcoog1 Well-Known Member

    Messages:
    889
    Likes Received:
    24
    Joined:
    Feb 7, 2011
    Location:
    Houston
    Local Time:
    4:19 AM
    The Piston/rod assembly from Mopar is ~$78. Head gaskets and oil pan gaskets are re-usable I believe. Head bolts can be re-used once (per Stu @ intertia). I don't think springs are too bad- I'd upgrade to 6.1 springs (or better if throwing a cam in).

    Have you pulled the head? A set of core heads go for ~$250 (sell) -450 (buy) for a set, and a bare block without damage probably $100-200. What all is damaged would determine what I'd do.
     
  3. Sinister.

    Sinister. Well-Known Member

    Messages:
    351
    Likes Received:
    0
    Joined:
    Aug 17, 2008
    Location:
    Kansas
    Local Time:
    4:19 AM
    I haven't pulled the head, nor has he. I don't personally know the guy but saw he was looking to get rid of it.

    so
    engine - 150
    Piston/rod - 78
    springs (would need replaced anyways)
    heads - 450
    sleeve (worst case scenario) - 80

    vs 1500 for a runner.

    Sounds fair enough to me. What do you think? I'd love to be able to pull it apart first but I doubt the guy would let me do that.
    This would be a good candidate for my dart, no?
     
  4. Joe Dokes

    Joe Dokes Well-Known Member

    Messages:
    1,129
    Likes Received:
    103
    Joined:
    Apr 21, 2011
    Location:
    Long Beach Ca
    Local Time:
    2:19 AM
    What's the total mileage?

    Since the motor is an '03 at 15K per year the motor could have 120K miles on it. Although these motors routinely go 200K I'd consider it a rebuildable core. If it dropped a valve, why? Bad spring, should you put in a new set of springs? Did it eat the cam in the process? Any motor, that's dropped a valve needs to be torn down and completely inspected, did it bend a rod in the process, or just put a smiley on the piston?

    For $150.00 it might still be a good deal, but it depends on what EXACTLY do you get, find out first. Most Junkyards around here would include the wiring harness and the accessories, including the throttle body and exhaust manifolds. Though the truck manifolds won't work in an A-body, unless you're going to carb the motor, you might need the harness. The alternator, is also useful and expensive.

    So long story short, if it is just a long block for $150.00 you might want to pass, but if you are getting the complete motor from oil pan to throttle body along with the exhaust manifolds and it happens to be a relatively low mileage motor that you think you can repair than it might be worthwhile.


    Regards,

    Joe Dokes
     
  5. Riddler

    Riddler Project EH-Body

    Messages:
    2,779
    Likes Received:
    563
    Joined:
    Sep 13, 2009
    Location:
    Windsor, ON, Canada
    Local Time:
    4:19 AM
    I've got some spare parts, head parts, 1 spare head. I bought an engine and one if the pistons was melted down and took out one of the heads. So I have 1 good head still, I think it's a drivers side head. But let me know if you need anything.

    Riddler
     
  6. Sinister.

    Sinister. Well-Known Member

    Messages:
    351
    Likes Received:
    0
    Joined:
    Aug 17, 2008
    Location:
    Kansas
    Local Time:
    4:19 AM
    It has 75k on it.
    I think it has just had the valve cover off to confirm a broken spring and dropped valve. Looks to be pan to TB, but no exhaust manifolds.
     
  7. Joe Dokes

    Joe Dokes Well-Known Member

    Messages:
    1,129
    Likes Received:
    103
    Joined:
    Apr 21, 2011
    Location:
    Long Beach Ca
    Local Time:
    2:19 AM
    Since you can't use the exhaust manifolds anyways, and the low mileage I say go for it.

    I have a Brand New 5.7 head, not sure if it is drivers or passenger side. Needs to be cleaned though, I do wood working and it got covered in saw dust. :toothy6:

    I'll sell it to you for 75.00 plus shipping.

    Regards,

    Joe Dokes
     
  8. Sinister.

    Sinister. Well-Known Member

    Messages:
    351
    Likes Received:
    0
    Joined:
    Aug 17, 2008
    Location:
    Kansas
    Local Time:
    4:19 AM
    This should be a non-mds motor, right?
    Would there be a better candidate short of an '09+ engine?
     
  9. fenderman33

    fenderman33 Well-Known Member

    Messages:
    373
    Likes Received:
    5
    Joined:
    Mar 21, 2006
    Location:
    Portsmouth, VA
    Local Time:
    5:19 AM
    One of the core motors I bought had dropped a valve seat and beat the whole motor to crap. There were fragments of pistons and pieces everywhere. I can't find the pictures anymore, but the whole motor was trash. At least try to look down the plug holes with a boroscope before spending the money.
    -Jon
     
  10. Dart_Doctor

    Dart_Doctor Asa style

    Messages:
    11,463
    Likes Received:
    1798
    Joined:
    Jun 19, 2010
    Location:
    Don't matter
    Local Time:
    4:19 AM
    At least try to look down the plug holes with a boroscope before spending the money x2
     
  11. Sinister.

    Sinister. Well-Known Member

    Messages:
    351
    Likes Received:
    0
    Joined:
    Aug 17, 2008
    Location:
    Kansas
    Local Time:
    4:19 AM
    I'd love to but I don't have access to one
     
  12. Sinister.

    Sinister. Well-Known Member

    Messages:
    351
    Likes Received:
    0
    Joined:
    Aug 17, 2008
    Location:
    Kansas
    Local Time:
    4:19 AM
    Well after talking the guy down to $125, I went out and got it last night.
    It is in fact complete from pan to TB, including exhaust manifolds.
    The valve cover was off on one side to confirm the problem. The spring was nowhere to be found and the valve was still in the guide. After fighting to get it into the garage and on the engine stand I pulled the head and found.... a rather bent valve and some good marks on the piston. What a relief.
     
  13. Dartnut

    Dartnut Don't hate me because i'm beautiful

    Messages:
    11,758
    Likes Received:
    4821
    Joined:
    Apr 19, 2007
    Location:
    Southern Alberta
    Local Time:
    3:19 AM
    Sounds like you got a good deal after all.
    How about some pics?
     
  14. yellowdartdave

    yellowdartdave RIP 1-5-12 Legendary Member

    Messages:
    3,004
    Likes Received:
    15
    Joined:
    Mar 8, 2008
    Location:
    Jax, Fl.
    Local Time:
    4:19 AM
    If it looks better than this you are golden !!

    [​IMG]
     
  15. wayfarer

    wayfarer Well-Known Member

    Messages:
    67
    Likes Received:
    0
    Joined:
    Dec 31, 2010
    Location:
    Central Ory-Gun
    Local Time:
    2:19 AM
    WOW!!

    I've seen some damaged engines before but this might just be the winner.

    .
     
  16. Sinister.

    Sinister. Well-Known Member

    Messages:
    351
    Likes Received:
    0
    Joined:
    Aug 17, 2008
    Location:
    Kansas
    Local Time:
    4:19 AM
    I think that's manageable. I'll try to get some up in a bit

    Yellowdartdave:
    ... good god...
     
  17. Sinister.

    Sinister. Well-Known Member

    Messages:
    351
    Likes Received:
    0
    Joined:
    Aug 17, 2008
    Location:
    Kansas
    Local Time:
    4:19 AM
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
  18. 03ramit1

    03ramit1 Well-Known Member

    Messages:
    1,112
    Likes Received:
    5
    Joined:
    May 21, 2010
    Location:
    Glendale Az
    Local Time:
    3:19 AM
    good deal man. i cant stress enough though REPLACE ALL THE VALVE SPRINGS buy 16 6.1 exhaust springs and run them. (the intake on the 6.1 were at a differnt installed hight) they are a good upgrade for the 5.7 springs. the 03 motors were known to have weak valve springs, and were revised in 04. they now come with a shield arround them (if you look at yours they dont)
     
  19. Sinister.

    Sinister. Well-Known Member

    Messages:
    351
    Likes Received:
    0
    Joined:
    Aug 17, 2008
    Location:
    Kansas
    Local Time:
    4:19 AM
    I definitely see a new cam going in, so springs WILL be replaced. Think it would care if I honed the bores, re-ringed the 7 and put in 1 new piston?
     
  1. This site uses cookies to help personalize content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.