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03-27-2002, 09:01 AM
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#1 |
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Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,253
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Underdrive Pulleys
I just drove my truck in to work for the first time since they started dumping salt. Stuff finally dried out enough and I have to pick up a load of chairs for the dining room. You can really appreciate driving a full size pick-up with a V8 after driving an Escort all winter.
When I get to 70 mph one of my accessories really starts to sing. It has to be the power steering because it did it before and after I replaced the alternator (no A/C - yet). Has anybody tried underdrive pulleys? If so what brand did you go with?
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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03-27-2002, 08:23 PM
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#2 |
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Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,253
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ttt
Anybody?
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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03-27-2002, 08:28 PM
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#3 |
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Registered User
Join Date: May 2001
Location: rienzi,ms.usa
Posts: 75
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i have march performance pullies and have no problem up to 100+ mph so...i dont really know.......
------------------ 1972 swb, 400 sbc, 1978 malibu classic,305 balanced and bluprinted flowmasters,2 1/2 exhaust,pulleys,k/n 4" power filter,750 edelbrock carb,plus lots more......
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1972 swb, 400 sbc, 1978 malibu classic,305 balanced and bluprinted flowmasters,2 1/2 exhaust,pulleys,k/n 4" power filter,750 edelbrock carb,plus lots more...... RIENZI,MS ...just southeast of Memphis... |
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03-28-2002, 12:41 AM
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#4 |
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Crash Test Dummy
Join Date: Feb 2000
Location: Wilton, Ca. USA
Posts: 201
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My opinion is that underdrive pulleys are fixing your problem like killing a mosquito with a sledgehammer. If the belts are singing at highway speeds, I would say they are not tight enough. I was amazed at how tight I had to get the alternator belt to make that sing go away. My cruise RPM on the highway is about 3700.
[This message has been edited by Brad69 (edited March 27, 2002).]
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The more hair i lose, the more head i get. Build Sheet: 1969 C-10 short fleet Constructed by taking a 3/4 ton rolling frame from one truck, adding a rust free AC Cab from another, then a bed from another, 1/2 ton front suspension & brakes from another,add in one Goodwrench crate 350, painted DuPont Arctic White,and driven daily. |
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