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Thread: 5.3 into a 1990 OBS with a 5 speed

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  1. #1
    Just picked up the last 4.8 flywheel in Houston from O Riley's.

  2. #2
    Ok
    2 things
    I had to take the line up pins on the flywheel off in order for the pressure plate to sit right. Holes line up no problems there. Or is there?
    Your thoughts

    The pilot bearing is loose on my crank. Enough for me to know that it's not right. Any way I can get a shim and wrap the bearing in it or look for a bigger one? My motor is a 6.0 so that might be the difference.

  3. #3
    Join Date
    Jan 2012
    Location
    DFW, TEXAS
    Posts
    594
    Quote Originally Posted by 99kon View Post
    Ok
    2 things
    I had to take the line up pins on the flywheel off in order for the pressure plate to sit right. Holes line up no problems there. Or is there?
    Your thoughts

    The pilot bearing is loose on my crank. Enough for me to know that it's not right. Any way I can get a shim and wrap the bearing in it or look for a bigger one? My motor is a 6.0 so that might be the difference.
    Tell what kind of flywheel, pilot bearing, and pressure plate/clutch disc do you have? you got 5.3l written in the title
    Im sorry i didnt know you went with a 6.0l its gonna be different. gotta get a car/ls1 pilot bearing. make sure ur input shaft measures 1-1/8 10 spline. and that the clutch diameter is a 11 7/8 in.

  4. #4
    That was the original plan to put a 5.3 in it while I built the 6.0.
    But fuck it might as well just go with the 6.0 and buy parts here and there. I'll measure the input shaft and the clutch tomorrow. Everything is at my dads house. I hate not having enough room.

    P/N's
    Flywheel Oreilys $60 NFW1050
    Pilot Bearing Napa $20 6302-VSP43
    Release Bearing Ebay $20 1377C
    Clucth Stock
    Pressure Plate Stock
    Last edited by 99kon; 06-13-2012 at 08:41 PM.

  5. #5
    Join Date
    Jan 2012
    Location
    DFW, TEXAS
    Posts
    594
    Quote Originally Posted by 99kon View Post
    That was the original plan to put a 5.3 in it while I built the 6.0.
    But fuck it might as well just go with the 6.0 and buy parts here and there. I'll measure the input shaft and the clutch tomorrow. Everything is at my dads house. I hate not having enough room.

    P/N's
    Flywheel Oreilys $60 NFW1050
    Pilot Bearing Napa $20 6302-VSP43
    Release Bearing Ebay $20 1377C
    Clucth Stock
    Pressure Plate Stock
    If all of this is for the 4.8/5.3, then you will need a LQ9(6.0l) pilot bearing. How does the pressure plate fit on the flywheel? does it look uniform or ? what size (diameter) clutch is it? 11 inch or 12 inch. But you havent changed transmissions? still have the nv3500, right? I went on Centerforces' website and really the only diff is pilot bearing and PP/disc diameter from 11-7/8 to 12 inch. no need to measure as long as you havent changed on me again! lol good luck! and stay on it this time and get it done so we can race!!

  6. #6
    Join Date
    Jan 2012
    Location
    DFW, TEXAS
    Posts
    594
    also depending on what year 6.0l you have, you might need a spacer so that you have good clearance between the flywheel/starter and that the clutch releases properly. some 6.0l dont stick out as far as others
    Last edited by blacstar; 06-13-2012 at 09:13 PM. Reason: correction

  7. #7
    Join Date
    Dec 2010
    Posts
    181
    Quote Originally Posted by blacstar View Post
    also depending on what year 6.0l you have, you might need a spacer so that you have good clearance between the flywheel/starter and that the clutch releases properly. some 6.0l dont stick out as far as others
    99/2000 vs later, correct?

  8. #8
    Quote Originally Posted by blacstar View Post
    also depending on what year 6.0l you have, you might need a spacer so that you have good clearance between the flywheel/starter and that the clutch releases properly. some 6.0l dont stick out as far as others
    Mine is an 05 model 6.0 LQ4
    Does this one need the spacer?
    Last edited by 99kon; 06-14-2012 at 10:12 AM.

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