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

Stroker noise and RPM questions

Old May 26, 2003 | 10:06 PM
  #31  
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Sry for not clarifying...

The pan acted like it was hitting something on the bottem-end or the dipstick..It was just higher on one side than the other and you have to pull it up by getting a few bolts started..The pan is soo sturdy it felt like it was making contact with something but all we needed to do was snug some bolts up..The dipstick wasnt too bad at all but it did take some manuevering around to make it work..Just remember to put the dipstick in the block before you put the pan on and move it if necessary.

Cody
Old May 27, 2003 | 01:37 AM
  #32  
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Originally posted by 94ZVert
I was listening to it some more today and I noticed that although I thought it was in concert with the crank, the noise does not increase in frequency or pitch as I accelerate or give it gas. It's the same constant noise all the time (almost like a washing machine on the spin cycle). It doesn't matter whether it's idling or under load. Would this make a difference as to what it might be?
I'm not sure if I understand what you mean, but if the noise increases as rpm increase it could still be the crank hitting the pan. I don't know if you meant that the noise stays the same despite increasing rpms or not.

Crank hitting the pan is the first thing that comes to mind, but keep in mind that it could be something else. Just remember that before you go all out and buy something expensive like a Canton oil pan. My best advice is to pull the pan and check for scratches, maybe tap it out some with a hammer to make sure the clearance is enough.
Old May 27, 2003 | 05:33 PM
  #33  
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Well, thanks to all as the problem has been resolved. To all those who said it was the oil pan you were correct. I took off the oil pan, which is not that hard with the tubular K-members, and found the culprit. There was definate scarring from something banging against it. Anyway, I did the BFH mod and now everything is good. I'm SOOO glad that it wasn't anything too big like a rod bearing. Thanks again.
Old May 27, 2003 | 09:18 PM
  #34  
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94ZVert, what is BFH mod?
Old May 27, 2003 | 09:26 PM
  #35  
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It's the Big F****n Hammer Modification. That's not the first time that I've had to "modify" like that, and it'll probably not be the last.
Old May 27, 2003 | 09:32 PM
  #36  
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94ZVert, you meant by BFH that you hammered the pan to make clearance for the crank?
Old May 27, 2003 | 09:56 PM
  #37  
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Clearance for Crank

For those of you who say they hammer their stock oil pan for clearance of the crankshaft, is there a most common spot for this clearance? In the front or rear of the pan? I am building a 383 and would like to know to prevent problems...
Old May 27, 2003 | 10:09 PM
  #38  
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#1 counterweight area, and the oil pan rails

You can grind the rods on the other side and not have to mess with banging the pan in these areas, much cleaner, nicer looking.
Old May 27, 2003 | 10:11 PM
  #39  
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Rear counterweight area too, very close.

ttt
Old May 27, 2003 | 10:56 PM
  #40  
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Also depends on the brand of crankshaft an rods you have.My lunati crank only required a couple of light taps with the BFH at front bottom of the pan.
Old May 27, 2003 | 10:59 PM
  #41  
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If I even thought it was close....

I got out the BFH and beat it, dont want any hitting or rubbing.
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