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Serpentine Belt Conversion Question

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Old Jan 16, 2007 | 06:56 PM
  #1  
Comp788's Avatar
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From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
Serpentine Belt Conversion Question

So I purchased the GM serpentine belt conversion kit and it comes with the reverse rotation water pump. I want to leave my car appearing stock and did not want to convert to electric fans.

Does anyone know of a stock clutch fan set up that will work on a reverse rotation serpentine belt setup?

Thanks in advance!!
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Old Jan 17, 2007 | 01:55 PM
  #2  
madmatt92RS's Avatar
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Car: 92 Camaro RS 25th aniversary editio
Engine: 305 tbi
Transmission: auto
you could always go with a reverse rotation flex fan bolted strait to the water pump. thats what i did on my 305 when the electric fan went out and i couldn't find an aftermarket electric fan that i liked. it looks really good too.
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Old Jan 17, 2007 | 02:02 PM
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Unbolt the fan from the clutch and turn it around the other way.
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Old Jan 17, 2007 | 02:44 PM
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Uhhh, I wouldn't recommend that. The blades would stick out closer to the radiator, and the pitch/curvature aren't right for operating in that direction.

Look at light truck serpentine setups.
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Old Jan 17, 2007 | 03:01 PM
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
S10 from 94-up would be a good bet, or electric fans...
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Old Jan 18, 2007 | 07:40 PM
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Comp788's Avatar
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From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
Originally Posted by xpndbl3
S10 from 94-up would be a good bet, or electric fans...
I am not sure if the clutch from a V6 would hold up or if the fans would have enough blades to cool.
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Old Jan 18, 2007 | 09:55 PM
  #7  
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Originally Posted by five7kid
Uhhh, I wouldn't recommend that. The blades would stick out closer to the radiator, and the pitch/curvature aren't right for operating in that direction.

Look at light truck serpentine setups.

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Old Jan 18, 2007 | 11:06 PM
  #8  
Comp788's Avatar
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From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
Originally Posted by Air_Adam

I think that is what I am going to do. Anyone know the years for those setups?
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Old Jan 19, 2007 | 12:11 AM
  #9  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
'88-up, from what I understand. I have a co-worker friend who has a '97 Suburban with Vortec 350, serpentine belt, and engine-driven fan.
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Old Jan 19, 2007 | 03:18 AM
  #10  
xpndbl3's Avatar
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From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Originally Posted by Comp788
I am not sure if the clutch from a V6 would hold up or if the fans would have enough blades to cool.
clutch from the v6 hold up to what? the 4.3L v6 spins to 5500 rpm no problem and is basically 6/8th of a 350 anyways. If you were really worried about cooling you'd be using an electric fan and not screwing around with 1950s technology aka the water pump driven fan.
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Old Jan 29, 2007 | 12:59 PM
  #11  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
FWIW, I just picked up a '95 Chevy C2500 6.5l turbo diesel. It has a serpentine belt set-up, with an engine driven fan - rotates the opposite direction as the engine. That should fit.

I would be careful about the clutch. Looking on partsamerica.com, it lists the part for the above application as "reverse rotation". Don't assume any clutch will work. Oh, it's also pricey - about $140 more than the clutch for my '84 full-sized van.
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Old Jan 29, 2007 | 09:28 PM
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From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
five7kid,

Thanks for the help. I ended up ordering a Spal electric fan for my car. I have used them in the past and their stuff is top shelf. Was very pricy but will be great for my application. The only downside is that it draws almost 40 amps. The reason for that is it moves almost 3175 cfm of air flow. I am sure that I will not have any overheating issues.

Here is the link to what I purchased.

http://www.spalusa.com/fans/automate...s/30102130.pdf

I am waiting until they get their new design fan in. The first design only has one sealed motor. The new design due in first week of Macrh has two sealed motors. For my application I want sealed motors.
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Old Jan 29, 2007 | 10:06 PM
  #13  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Well, now people will know if they consider it.

Hope you plan on using relays with those electrics.

(Out of curiosity, how pricey is "very" pricey?)
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Old Jan 29, 2007 | 10:09 PM
  #14  
Comp788's Avatar
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From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
You bet I am going to use relays!

Actually I am going to use two and be able to switch on each fan seperate. One will be on a thermostacially controled switch and the other will be manual plus also tied into the AC compressor.

Well $350.00 is list. But I did not pay list.
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Old Jan 30, 2011 | 08:13 PM
  #15  
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From: Lewis, Kansas.
Car: '85 Firebird Sport Coupe.
Engine: Carb 350 4bolt.
Transmission: 700R4 Auto.
Axle/Gears: 3.73
Re: Serpentine Belt Conversion Question

I know this is an old post but I'll give it my two-cents. I install the GM serpentine belt kit on my '85 Firebird 350 and I went with a 17" reverse ration thermal fan clutch and fan from Flex-Lite (#5560 and 5917) which replaced the orignal V-belt fan clutch and fan but runs in reverse to match the water pump rotation.
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