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Rebuild or buy new crate motor?

This is a discussion on Rebuild or buy new crate motor? within the General Help forums, part of the LSx Technical Help Section category; My car has 290,000 miles and has been running fine until now. The engine has a knocking sound and the ...

  1. #1
    Junior Member ssxcytmnt's Avatar
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    Rebuild or buy new crate motor?

    My car has 290,000 miles and has been running fine until now. The engine has a knocking sound and the ses light is constantly on for knocking. I took it to a good friend who builds chevy race cars and he said it was a internal problem and with so many miles, it would be better to either rebuild the motor with all new parts or purchase a new crate motor from the dealership. I plan on keeping the car for a very long time. What are the pros and cons of rebuilding vs a new crate motor as far as price, performance, and anything else you can think of? Ive never had a car this long to require an engine over haul. Thanks a bunch for any input.

  2. #2
    Senior Member wileyCoyote's Avatar
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    blue
    1999 TransAm

    congrats - sounds like you've done well to get that mileage! if it were me, i'd probably look at a crate engine, but that's mainly because i don't have the skill and equipment to DIY a rebuild.. another factor is how often you need it, or can it be down for a long time?

  3. #3
    Senior Member Z28_Driver's Avatar
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    Sunset Orange Metallic
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    If you have the time, some mechanical ability, and a friend or two to help muscle parts around go fro the rebuild. Its a lot of fun and a very rewarding experience.
    Figure probably 2 weeks, maybe a month between removal, teardown, machining, assembly, and install. Assuming you work on it most days after work and weekends. Can you have your car out of service that long?

  4. #4
    Spaz is My Mentor SMWS6TA's Avatar
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    OP, fyi...

    LS6 crate motors are getting harder to find. Some genius at GM decided to stop producing them instead of the LS1. So now any left in stock are going for a premium.

    LS2/3's will fit in our cars but they require more stuff and work then a LS1/6/LQ9 swap.

  5. #5
    Senior Member JayTA98's Avatar
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    1998 Trans Am

    if it is an A4 and you have the money , rebuilt your tranny as well. That's alot of miles. I hope my car goes that far as well.

  6. #6
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    dark blue metallic
    2002 camaro z28

    I got an ls6 crate before they got gone . long block ls1 crate cheap. i think they stopped the ls1 block in late 01 or 02 . so i think the ls1 crate is ls6 block with ls1 heads and cam.it seems to me firebirdjones is a knowledgable person would you care to elaborate on the issue??

  7. #7
    Smiles for 9.5 Years cammed goat's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    OP, fyi...

    LS6 crate motors are getting harder to find. Some genius at GM decided to stop producing them instead of the LS1. So now any left in stock are going for a premium.

    LS2/3's will fit in our cars but they require more stuff and work then a LS1/6/LQ9 swap.
    And LS3s are expensive to boot. The dealership that replaced my LS1 wanted 10 grand for the motor/labor. YIKES!!!

  8. #8
    Spaz is My Mentor SMWS6TA's Avatar
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    you know with the cost of LS3's I think it may be better to just get a LSX.....

  9. #9
    Smiles for 9.5 Years cammed goat's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    you know with the cost of LS3's I think it may be better to just get a LSX.....
    ^This.

  10. #10
    Waiting on the Tree transamtom's Avatar
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    1999 TA A4

    Here are some crate engines and they have free shipping until the end of May.

    http://www.slponline.com/browse_list_site.asp?SPC=enp
    2010 Camaro SIM 2SS/RS A6
    1999 TA A4 NBM
    12.265 at 110.52mph

  11. #11
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    Thumbs up

    Quote Originally Posted by ssxcytmnt View Post
    My car has 290,000 miles and has been running fine until now. The engine has a knocking sound and the ses light is constantly on for knocking. I took it to a good friend who builds chevy race cars and he said it was a internal problem and with so many miles, it would be better to either rebuild the motor with all new parts or purchase a new crate motor from the dealership. I plan on keeping the car for a very long time. What are the pros and cons of rebuilding vs a new crate motor as far as price, performance, and anything else you can think of? Ive never had a car this long to require an engine over haul. Thanks a bunch for any input.
    Did an "ls6 crate engine" search and came up with the following:

    http://store.gmperformanceparts.com/...alerResult.jsp

    Don't know if the engine is available from all the dealers listed, but that should give you a place to start.

    Rip

  12. #12
    Spaz is My Mentor SMWS6TA's Avatar
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    Quote Originally Posted by Ripinator View Post
    Did an "ls6 crate engine" search and came up with the following:

    http://store.gmperformanceparts.com/...alerResult.jsp

    Don't know if the engine is available from all the dealers listed, but that should give you a place to start.

    Rip
    linky no worky

  13. #13
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    '02 White, '95 Black
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    Quote Originally Posted by SMWS6TA View Post
    linky no worky
    Sorry. . . Try this one,

    http://www.gmperformanceparts.com/En...1268&engCat=ls

    and then click on "Shop Now"

    Rip

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