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09-10-2011, 07:07 PM
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#1 |
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LT4 M6
Drives: 2018 ZL1 1LE Join Date: Nov 2010
Location: Bloomington, IN
Posts: 1,249
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Under Drive pulley and forced induction.
If i choose to go forced induction later will the under drive pulley need to come off for the blower? I am on the fence if I want to get a pulley when I do my cam swap.
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09-10-2011, 07:57 PM
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#2 |
    Drives: 2010 camaro 2SS LS3 Join Date: Aug 2011
Location: Denver
Posts: 1,334
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Its only 4 horsepower at the best, is it worth it? My ac is too important, so is cooling and battery. And not overheating my power steering.
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09-10-2011, 08:00 PM
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#3 |
    
Drives: 2011 imperial blue SS, black 92 RS Join Date: Apr 2011
Location: Denham Springs
Posts: 2,580
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Yes it will need to come off. You'll spin the supercharger slot slower with the ud pulley. Unless you put a smaller top pulley too. But the smaller the top pulley is, more likely for the belt to slip.
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2011 imperial blue SS/RS a6 12.43@112 vararam, tune, jba cats, magnaflow axle back, self ported tb, under drive pulley, NO headers, Stock tires. 1.87 60ft. Stock tires. SOLD :(
2000 1500 silverado extra cab SOLD :( 2017 Silverado 5.3 all stock 2004 5.7 GTO 78mm turbo |
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09-10-2011, 08:10 PM
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#4 |
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LT4 M6
Drives: 2018 ZL1 1LE Join Date: Nov 2010
Location: Bloomington, IN
Posts: 1,249
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I have also read where the under drive pulley is hard on timing chains but do not know if that is true or not.
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09-11-2011, 04:53 PM
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#5 |
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Account Suspended
Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011
Location: St. Charles, IL
Posts: 18,663
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If you are going to go with a blower down the road a underdrive pulley is a waste of time. You can't run them with a blower so you would have to remove it for the supercharger install. Save your cash for the blower, what system are you thinking about?
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09-12-2011, 06:17 AM
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#6 | |
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LT4 M6
Drives: 2018 ZL1 1LE Join Date: Nov 2010
Location: Bloomington, IN
Posts: 1,249
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Quote:
My thoughts about you been a troll are correct! 
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09-12-2011, 06:37 AM
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#7 |
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220/221 whatever it takes
Drives: See sig.... Join Date: Jun 2010
Location: Lafayette In
Posts: 1,132
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FWIW, during my cam swap, I had Mike install one (best time to do it). I do mostly in-town driving with my car and I’ve not seen any ill effects.
Oh by the way, I made sure the pulley was 304L stainless..... 
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Brent
2022 BMW X5 M50i 2022 Ram TRX 2021 GT500 CFHP 2016 Challenger Hellcat A8 1058whp/898wtq 1970 Chevelle SS396 4spd Last edited by McBeevee; 09-12-2011 at 06:53 AM. |
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09-12-2011, 08:57 AM
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#8 |
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Drives: Camaro Join Date: Apr 2009
Location: Texas
Posts: 1,669
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Typically with a blower a customer will buy a overdrive pulley. That way you can overdrive the blower without shrinking the blower pulley & causing potential belt slip.
 We usually have 10% overdrive pulleys for boost guys wanting more boost in stock.
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