LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Sound like a supercharger?

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Old 05-01-2007 | 01:48 PM
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Default Sound like a supercharger?

So i think i need a new belt because my car wisltes like hell man, sound like i have a super charger in there, or could it be i need a new alt. Can someone help me identify this. Its sounds like a straight up supercharger.
Old 05-01-2007 | 01:51 PM
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my grand prix does that, i have a leak in my intake which makes for a supercharger whine, maybe something to look into.
Old 05-01-2007 | 02:29 PM
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did you recently put a new belt? ive noticed some belts make really loud sounds i had to change mine and it became quiet.
Old 05-01-2007 | 02:33 PM
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haha mine too, i kinda like it lol

Mine only has the sound when it's in gear and gaining speed. If i push in the clutch and rev it the noise is gone.
Old 05-01-2007 | 07:29 PM
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Take the belt off and turn each accessory by hand to see if it is binding or squealing. Also check the tensioner pulley and any idler pulleys. Better to check now than get stuck somewhere.

Jim
Old 05-01-2007 | 08:11 PM
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Like he said ^^^. It might not be the belt. Usually pulleys get binded and make noises. Check the belt for glazing or if it has too much tension. You could use a mechanic stethoscope and listen to each accessory for the noise.
Old 05-01-2007 | 09:32 PM
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supercharged LT1 ???!
Old 05-01-2007 | 09:33 PM
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supercharged LT1 ???!


on a serious note ... do as deltat had stated above. if that doesnt work, then it may be your power steering fluid level is low. this can make it sound like a blower.

hope this helps
Old 05-01-2007 | 10:35 PM
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When I had a bearing go bad in my compressor it made a whining type of noise. I'll also second checking your power steering fluid.
Old 05-02-2007 | 05:39 PM
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Easy fix: Take a super thick crayon (any color to you see fit(tire markers work better too) while the belt is turning put (at IDLE SPEED!) let the crayon rub on the inside of the belt. The sound will vanish.
Old 05-02-2007 | 05:43 PM
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My Dad's car did that and it was the alternator. Hope it's something easy man.
Old 05-02-2007 | 08:14 PM
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Only AFTER I got my tune burned, and I installed it, when I step on it... Above 3000-3500RPM's it starts to whistle. I think it's from sucking in more air. It's pretty bad ***
Old 05-03-2007 | 12:44 AM
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you know wat after long time hearing the engine i foudn out that its my air filiter, Its wierd i got a belt nosie to so i must change that soon but yah its kool guys thanks.
Old 05-03-2007 | 12:47 AM
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yah i think its my alt also cuz i have a 1200 amp with 2 12" subs and a panasonic deck, i think i might be overding it in the audio dept.
Old 05-03-2007 | 03:46 AM
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Originally Posted by losaltos6
So i think i need a new belt because my car wisltes like hell man, sound like i have a super charger in there, or could it be i need a new alt. Can someone help me identify this. Its sounds like a straight up supercharger.
sounds like one of the bearings are shot in the alternator. Or does it get louder when you take turns? THat might be the power steering pump. But soundsl like a bearing in the alt if you ask me.


Originally Posted by losaltos6
yah i think its my alt also cuz i have a 1200 amp with 2 12" subs and a panasonic deck, i think i might be overding it in the audio dept.

that's what they make capacitors for bro
Old 05-03-2007 | 04:26 AM
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Originally Posted by Bones Z28
that's what they make capacitors for bro

Yea, when you're running anything over 1000w you really should run a "Bass Cap". Really wouldn't hurt to get your alternator built up either. I think the 140s can easily do 210.
Old 05-03-2007 | 11:51 AM
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sounds like a bad belt or pulley. even if you recently changed a belt and they gave you the wrong size, it could make the p/s pulley squeel badly. i had advance give me a wrong v belt for my g/fs cutlass and it made her p/s scream lol. if it's the right size belts and all, try spraying belt dressing or WD40 in the area that's making the noise on the belts and hit the pulleys too.
Old 05-03-2007 | 12:13 PM
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I dunno about WD40 :O You want it to grip the pulleys after all. A bit related experience is when I was really young and my 10spd's front break would squeal pretty bad when I applied it. So... WD40... WHOOOOOPS No accident or anything, since I Had back break, but I tell you, that wasn't one of my Eureka moments!
Old 05-03-2007 | 03:13 PM
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Originally Posted by FU_I_AM_UltraZ
sounds like a bad belt or pulley. even if you recently changed a belt and they gave you the wrong size, it could make the p/s pulley squeel badly. i had advance give me a wrong v belt for my g/fs cutlass and it made her p/s scream lol. if it's the right size belts and all, try spraying belt dressing or WD40 in the area that's making the noise on the belts and hit the pulleys too.
No a belt won't wine, a bad or worn out belt will squeak constantly, and sounds completely different. Also if you spray wd40 on the belt you have a huge f n mess on your hands, whether you do it while the car is running or not. That crap is going to shoot all over the place.

Well I had a similar case myself about a year ago and it was a bearing in the alternator. I just bought a rebuild kit and did it myself, but you can just buy a complete rebuilt alt as well.


I heavily suggest investing in a capcitor. I have a stock alternator but I run a rockford fosgate cap and never had a problem since. I bet when your bumpin your headlights dim in and out as well right? That's half the reason I bought one, ghetto fab lol.
Old 05-03-2007 | 08:59 PM
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i never said it would whine...i said it would "squeel" and losaltos6 originally said his whistles. so before you quote and correct someone, make sure you got your facts straight.
And if you take the straw off and go to town... you won't have a mess of belt dressing or WD-40 on your hands. maybe you need to stay away from the fans then or put the straw back on. i never make a mess other than a small puddle on the ground when i'm finish... maybe i just perfected this technique from doing this work so long?


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