6.0 4L80 SWAP Trans Noises?!?
So I recently bought a 2001 Silverado with a 6.0 and 4l80E swap. I drove it for about 1,000 miles and than the transmission was making a grindy noise in 1st but went away in 2nd. It still shifted fine and I didn't feel any difference. I took it to a trans shop anyways and they said the trans was on it's way out. So I spent $3,000 and had the whole thing rebuilt at 110,000 miles.
The shop than told me that the noise didn't go away and I decided to drive it a few days and see what it's all about. The shop said they would swap it for a different trans that was rebuilt the same way for free if I didn't like the noise. When I picked up the truck after I had it rebuilt to hear the noise that was still there it was a different kind of noise. Instead of a grnd ish noise it was a whine. Not a light whine that I hear people talking about these make. But a whine like you are in a big city bus or a newer school bus is what I compare it to almost exactly. It fills the cabin with noise almost like it is super charged or something. Maybe I have super sensitive hearing or is this the whine people commonly talk about these having. (I don't know if they put straight cut gears in or not the shop has a really good rep but for $3,000 this thing should be perfect) |
I had that happen in an 80e I had at one point. Pretty sure the pump was about to go out.
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Originally Posted by Atomic
(Post 5436161)
I had that happen in an 80e I had at one point. Pretty sure the pump was about to go out.
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I cant remember exactly since I had a lot done on the rebuild, but I do believe the sound was the pump.
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My last 4L80 whined in first gear, did that for 5 years before it died. New transmision does not seem to whine tho.
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Originally Posted by zz454Chevelle67
(Post 5436223)
My last 4L80 whined in first gear, did that for 5 years before it died. New transmision does not seem to whine tho.
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After doing a google search that whine seems to be common and not really a problem. When my last 80 died I dont think the whine had anything to do with, I heard and felt a loud boom grinding and it left me walking close to home. I wouldn`t worry about it unless its so loud that its really annoying.
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Originally Posted by zz454Chevelle67
(Post 5436329)
After doing a google search that whine seems to be common and not really a problem. When my last 80 died I dont think the whine had anything to do with, I heard and felt a loud boom grinding and it left me walking close to home. I wouldn`t worry about it unless its so loud that its really annoying.
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