LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

blown engine?

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Old Apr 30, 2009 | 11:17 PM
  #1  
spike30th's Avatar
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From: west chester,pa
blown engine?

I would like to get your guys opinion.Well heres the problem went to the track ran 3 passes the first 2 passes the car strong and I got my best times ever in this car the 3rd pass got half way the track got it into fourth gear and noticed it wasnt pulling as hard.I stopped to pick my time slip up and the car died I tryed restarting it and the engine didnt want to turn I thought it was seized up.So we pushed it and got it started it that way.so now the car wont idle and sounds like a bunch of nuts and bolts in a can rattling around very loudly and it sounds like its coming from the driverside side of the engine.I still have normal oil pressure no check engine light and no smoke.what do you guys think the engine is shot?
Old May 1, 2009 | 01:50 AM
  #2  
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something might have given loose in your drivetrain...but its hard to say, can you localize it any more? If its pretty bad I wouldn't run it any longer than just to determine where the sound is comin from...then prolly take off the top end if you think its coming from that end
Old May 1, 2009 | 02:23 AM
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Take off the driverside valve cover and check for loose pushrods. Is it a taping sound or more of a knocking sound?
Old May 1, 2009 | 08:10 AM
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It sounds like something came apart and its not a ticking or knocking. it's a real loud rattling sound like nuts and bolts in a tin can. I will pull the valve cover off and take a look.

Last edited by spike30th; May 1, 2009 at 08:17 AM.
Old May 1, 2009 | 01:09 PM
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Originally Posted by spike30th
It sounds like something came apart and its not a ticking or knocking. it's a real loud rattling sound like nuts and bolts in a tin can. I will pull the valve cover off and take a look.
Prob broke some valve springs or a rocker came loose and off the stud. If everything looks normal under the VC's then pull the intake to check the lifer valley to make sure your spider clamp is intact and not bent as this can cause a lifter walk out if you have bent any of your valve train (ie pushrods, loose rocker, etc..) Lastly, drain your oil and look for metal on your magnet (if you have one) or for particulates in the oil - sign of spun bering. Good luck.
Old May 1, 2009 | 01:50 PM
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Check inside the bell housing for unsecured material.
Old May 1, 2009 | 05:28 PM
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spike30th's Avatar
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I pulled the oil drain plug and it was full of metal. Time for a rebuild
Old May 2, 2009 | 11:02 AM
  #8  
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Originally Posted by spike30th
I pulled the oil drain plug and it was full of metal. Time for a rebuild
Yup, that sucks. Go the 355 or 383 route now. Perfect time
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