Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

supercharged 289

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Old Aug 17, 2004 | 01:31 AM
  #1  
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Syntax
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Default supercharged 289

I came accross this 289 with a paxton blower. From what the tag says the blower was built for shelby. Just wondered if anybody has any history on it. Opinions. What it would be worth today, etc,,,
Thanks as always
Old Aug 17, 2004 | 09:18 AM
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Default RE: supercharged 289

After market. Is the guy selling the car. If he is and you thinking about buy it, Do you want a blower? Is the car fast? Is that what you want. How much is it worth to you?I would like to have a blower but I can put one on my motor(11 to 1). I would just keep it. It's not worth much to me. I don't know what they go for new.
Old Aug 17, 2004 | 06:49 PM
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Default RE: supercharged 289

ORIGINAL: horseshoeing

After market.
How do you know it`s aftermarket?
Old Aug 17, 2004 | 07:14 PM
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Default RE: supercharged 289

I believe there was a shelby that came out with a paxton blower on it stock...
Old Aug 17, 2004 | 07:29 PM
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Default RE: supercharged 289

Ya actually i believe the 66-68 or something shelby GT350's had a limited production that you could get with a Paxton Supercharger





But now that i look back....you said a 289, so idk
Old Aug 18, 2004 | 12:09 PM
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Default RE: supercharged 289

It looks after market. Call paxton and ask them.
Old Aug 18, 2004 | 01:04 PM
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Default RE: supercharged 289

That looks like an original Paxton set up from an early GT350. When installed on a HiPo 289, those motors were rated at 360 BHP. As has been mentioned, contact Paxton for more information. Very interesting, especially since it has the Shelby tag on it.
Old Aug 18, 2004 | 02:17 PM
  #8  
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Default RE: supercharged 289

Did they have that kind of belt on them back then?
Old Aug 18, 2004 | 03:29 PM
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Default RE: supercharged 289

They had a big, fat v-belt. It was as wide as a modern day ribbed "serpentine" belt. It's hard to tell from the picture but it looks like what I remember from years ago.
Old Aug 19, 2004 | 12:42 AM
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Default RE: supercharged 289

I got the skinny on the motor. Granatelli approached Carroll Shelby with the idea of adding a Supercharger on the GT-350's as an option. Shelby lent Granatelli a 289 cobra as a test vehicle. When Granatelli walked away from the Cobra, Shelby was convinced and added the Paxton Superchargers as an expensive 'option' in 1966.
By April,1966 Shelby-American made special arrangements with Paxton Products to install it's Superchargers on GT-350's, both 4-Spd. and Automatic, as a "Special Option". This included the Supercharger Drive Unit and Air Cleaner, 460cfm Autolite carb, Cobra Cast Aluminum Carburetor Enclosure, Paxton Supercharger, Special Fuel Pump, Carbuetor Jets, and Ignition Points. The only other modification required was an air-inlet hole cut into the radiator bulkhead, on the driver's side. The compressor was mounted behind the hole and mated with a mesh grille. The Factory advised dealers this unit would add 46% more horsepower but, it came at a very high price in 1966: namely $670. This also included a Blower Pressure Gauge and Fuel Pressure Gauge mounted in a small chrome panel under the dash. Early Supercharger boxes were painted Black and got Red,White & Blue CS Shelby-American emblems re-attached to them. The first official 'factory' Supercharged car was 6S051 which was painted Green and given a special stripe designation "GT 350S". At that time Shelby was planning on producing Paxton equipped cars as 'special models'. However, it was later decided to offer the Supercharger as an option. Various road tests of the cars in 1966 placed the peak horsepower at 400.
Now paxton made 500 of these units for Ford. But Ford only purchased 200 of these units. Only 11 had been purchased with the car from the factory. The other 189 blowers were sold over the parts counter. I also had a coversation with Craig Connelly. He rebuilds, and sells older paxton blowers. In fact he can sell you the exact blower you see in my pics for $2500.00. Craig has all the tooling to make the blowers, even with the Shelby name. He explained to me that his
blowers are more reliable due to technology changes over the last 30 years.
I have his phone number if any of you want it. pm me.
peace



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