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Thread: $3,500 on my 6.0 bulid up well spent! lasted 2k miles...

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  1. #1
    Join Date
    Dec 2007
    Location
    Brooklyn CT
    Posts
    14

    $3,500 on my 6.0 bulid up well spent! lasted 2k miles...

    This is my 03 LQ4 6.0L. Has comp cam, ls7 timming set, ported stock heads, ls7 springs... Oil pump said peace im out. But now after it spun a berring now has oil presher....


    http://www.youtube.com/watch?v=GlORSvWVw94
    (Sold) 01 5.3 headers, true dual exhaust, k&n fipk, shift kit, 4.10s, 3"4" drop, drilled an slotted roters. 14.1 @101.5 (g meter)
    (current) 03 Chevy 2500HD 6in pro comp lift, 35in tires, 6.0, ported heads, small comp cam, Dynatech long tubes, Lost oil pump Blew da motaz!
    (DD) 90 Jeep comanche lifted lots of trail damage!
    (Mullet Wagon) 88 Monte SS, 412ci small block, TH400, 3000 stall

  2. #2
    Join Date
    Jan 2008
    Posts
    8,031
    damm that sucks

  3. #3
    Join Date
    Jan 2010
    Location
    Cedar Park
    Posts
    898
    why are so many people spinning bearing in these motors here lately?
    2012 Ford F-150 Ecoboost Super Crew 4x4, stock and staying that way.
    2001 chevy green = LS1 stock, 3k stall, 373 posi, tuned by LSX Power in CS TX

  4. #4
    Join Date
    Dec 2007
    Location
    Brooklyn CT
    Posts
    14
    idk all i know my oil pump was weak, an i had it replaced. New pump lasted 50 miles an lost oil presher. But now its knocking it has oil presher now....... WTF! an only has 135k on it never worked hard or beat on. Truck was all stock an just a comuter up to 130k miles
    (Sold) 01 5.3 headers, true dual exhaust, k&n fipk, shift kit, 4.10s, 3"4" drop, drilled an slotted roters. 14.1 @101.5 (g meter)
    (current) 03 Chevy 2500HD 6in pro comp lift, 35in tires, 6.0, ported heads, small comp cam, Dynatech long tubes, Lost oil pump Blew da motaz!
    (DD) 90 Jeep comanche lifted lots of trail damage!
    (Mullet Wagon) 88 Monte SS, 412ci small block, TH400, 3000 stall

  5. #5
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    So many people think that replacing a LS based oil pump is just a simple remove and replace operation. You have to get it centered properly on the crank or you'll burn it up in short fashion. The Oring is also tempermental, it's very easy to pinch it in the pump. Often times the sump tube presses the Oring proportionally more to one side than the other and causes an air suction leak in the pickup tube. Another thing that happens is the pickup tube get placed too close to the bottom of the pan and causes the pump to cavitate. There should be from 3/8 to 1/2 gap from the bottom of the pan to the sump. The oring issue, I like to pack silicone in the area behind the oring to serve as a secondary seal to the pickup tube.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  6. #6
    Join Date
    Dec 2007
    Location
    Brooklyn CT
    Posts
    14
    idk i didnt do the work... i had it in the shop for a oil pan an rear cover leak. all i know is the shop had the tranny out 2 times, pan off 3 an replaced the oil pump.... Back when i had the cam put in, i found it had a supn cam berring an only replaced the cam berrings never touched the bottom end...
    (Sold) 01 5.3 headers, true dual exhaust, k&n fipk, shift kit, 4.10s, 3"4" drop, drilled an slotted roters. 14.1 @101.5 (g meter)
    (current) 03 Chevy 2500HD 6in pro comp lift, 35in tires, 6.0, ported heads, small comp cam, Dynatech long tubes, Lost oil pump Blew da motaz!
    (DD) 90 Jeep comanche lifted lots of trail damage!
    (Mullet Wagon) 88 Monte SS, 412ci small block, TH400, 3000 stall

  7. #7
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    I sure would be taking it back to them if it only lived 50 miles after losing oil pressure due to their oil pump install. Not just anyone can build a Gen3 properly. Your pump is either galled up or the plunger hung in it blowing all oil pressure out the relief port, likely.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  8. #8
    Join Date
    Sep 2010
    Location
    McPherson KS
    Posts
    556
    so Ive noticed from alot of people that this is a problem when building these motors. What kind of steps can be taken to ensure it doesnt happen? I like RedHeartbeat's silicon idea, any other little tricks to help prevent failure?
    Always buying things I dont need to impress people I dont know

  9. #9
    How do you center the pump, when I did my cam swap i didnt do anything like that.

  10. #10
    Join Date
    Oct 2007
    Location
    Bandera, TX
    Posts
    2,921
    Quote Originally Posted by 6.0vortecchevy View Post
    How do you center the pump, when I did my cam swap i didnt do anything like that.
    You probably didnt take the pump off.
    single digit street truck


    for build info

    http://www.ls1truck.com/forums/my-ga...cs-garage.html

    The best advice I have ever heard:... Only take B( . Y . )ST advice from someone that is CURRENTLY running a turbo setup close to, or bigger than what you want......

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