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04-29-2008, 02:34 AM
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CC Member
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Join Date: Sep 2007
Location: Sydney,
02
Cobra Make, Engine: DRB 1996 302 windsor
Posts: 63
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Not Ranked
Paxton Supercharger
Hi all
Just Wanting to know a bit about paxton supercharger. Is that the best supercharger and does any one have one in there car
thanks coco
Last edited by coco_cobra; 04-29-2008 at 02:39 AM..
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04-29-2008, 06:10 AM
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CC Member
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Join Date: Aug 2007
Cobra Make, Engine:
Posts: 87
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Not Ranked
I have the Paxton kit that was installed in the Eleanor cars. It is very compact and a quality product. In my opinion, a good choice.
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04-29-2008, 03:53 PM
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CC Member
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Join Date: Mar 2007
Location: Creedmoor,
TX
Cobra Make, Engine: FFR3542K, 347 C. I., EFI, T-5, Miata Front Sway Bar, 3 Link, Red with White Stripes
Posts: 1,161
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Not Ranked
Will the Paxton fit under a FFR hood?
Steve
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04-29-2008, 04:31 PM
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CC Member
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Join Date: Aug 2007
Cobra Make, Engine:
Posts: 87
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Not Ranked
I think it would probably fit under most hoods because it is very low profile. There is a box that surrounds the carb and I do not think that it would be any higher or much broader than the standard air cleaner.
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04-29-2008, 09:19 PM
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CC Member
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Join Date: Apr 2002
Location: Gilbert, Az,
Posts: 45
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Not Ranked
Not a paxton but here is the carb supercharger setup I used. It is the holley 174. I liked this route because of the use of a normal carb and fit under the hood
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04-30-2008, 12:36 AM
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CC Member
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Join Date: Sep 2007
Location: Sydney,
02
Cobra Make, Engine: DRB 1996 302 windsor
Posts: 63
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Not Ranked
Can you get one for a 351 cleveland
thanks coco
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04-30-2008, 11:48 AM
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CC Member
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Join Date: Aug 2007
Cobra Make, Engine:
Posts: 87
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Not Ranked
I would call Vortech which is Paxton and ask them for the kit they provide to Shelby Performance. This is useable on both the big and small block motors.
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04-30-2008, 12:04 PM
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CC Member
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Join Date: Mar 2008
Location: Phoenix,
Az
Cobra Make, Engine: FFR 302 c.i. f.i.
Posts: 135
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Not Ranked
Vortech Supercharger
I've got a Vortech supercharger on my FFR 302 c.i. Fits well under the hood and makes one heck of difference. Mucho power.
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04-30-2008, 12:07 PM
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CC Member
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Join Date: Mar 2008
Location: Phoenix,
Az
Cobra Make, Engine: FFR 302 c.i. f.i.
Posts: 135
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Not Ranked
Have no problem leading the pack. Do have a problem though keeping the foot off the acelerator.
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04-30-2008, 01:14 PM
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CC Member
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Join Date: Mar 2000
Location: Des Moines,
IA
Cobra Make, Engine: Sold my beloved Shelby CSX 4068, Gessford 427 Ford
Posts: 756
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Not Ranked
Wanne be blown?
I'd suggest a positive displacement Roots type such as the Kenne Bell, Holley, Roush or WhippleCharger. They make power at all RPMs vs having to rev the engine as with Paxton or Vortech. Torque is king. All make good power, but the Roots type makes usable power at all RPM levels.
There's a reason OEM manufacturers go with these vs centrufigal. I had a T-bird SC that we drove for 188,000 miles without any trouble at all from the blower. My Roush Mustang has tremendous power with its Roots blower.
__________________
CSX4068, '69 Bronco, '70 BOSS 302, '87 Mustang GT, '08 Roush Trak Pak
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04-30-2008, 01:54 PM
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CC Member
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Join Date: Feb 2002
Location: Gilroy,
CA
Cobra Make, Engine: West Coast Cobra w/ Centrifugally Blown Big Block, Pickles, Onions, on a Sesame Seed Bun.
Posts: 493
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Not Ranked
Torque is king, but you don't need a roots blower in a Cobra.
Here's my combo...
435" 385 series ford based build, 7.88:1 compression.
Custom Vortech V7-JT supercharger setup (my design)
EFI (my design, built on OEM Ford EEC-IV)
Viper 6spd
All under-hood, no bubbles, hickeys, etc are required.
So far I've spun the engine to 5500rpm and here's what I've learned.
500ft-lbs of torque at 2500rpm, 660ft-lbs of torque at 5500rpm, 660hp at 5500rpm and climbing straight up at shut down. Peak torque occurs at 5600rpm, meaning peak power will be somewhere up around 6500-7000. These are rear wheel chassis dyno figures and were produced on a dynojet 248 running only 16deg total advance and 11:1 AFR. I'm purposely leaving it soft for the break-in miles; there's probably another 50-100hp in there if I simply add spark, but all of them are useless...I'm beyond the traction limit now.
After break-in miles (the WSCB), I'll check the lash and go ahead and spin it to 7K and see what she makes. 800rwhp probably, as pulleyed, with the potential for 30% more boost.
I don't know why you'd want more torque or more power in a cobra, and my car is a heavy example weighing in at 3000lbs (West Coast). The car easily breaks traction in 4th gear starting at freeway speeds with 335's in the rear. Drop 500lbs and it would be even worse.
There's pictures in my gallery, and here's a video taken last weekend.
http://www.youtube.com/watch?v=17qAk_LIN8U
Now, if you're building something with short stroke, then I could see it...stock 302 with a Whipple and 5psi would be enough for one of these cars. If you have a specific goal in mind, maybe you need more. My goal is 1000fwhp; which means I want 800 at the rear wheels. Why? Why not, makes me happy.
Oh, and as far as centrifugals go, all I can really recommend is to stay away from ball drives. I've owned a few of them, and they leave me wanting. The boost is variable depending on how hot the oil gets. If you drive the car hard, slip will occur and you'll fry the ball drive. I've had a belt-drive (powerdyne) unit too, and though I was able to get away with road-race and other abuse, others were far from as lucky. Go with a gear drive unit. I prefer Vortech, but opinions vary. And whatever you get, make sure it includes a bypass valve for part-throttle venting of all that hot air during cruise.
Last edited by ByronRACE; 04-30-2008 at 01:58 PM..
Reason: Paxton comment added.
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05-04-2008, 08:36 AM
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CC Member
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Join Date: Oct 1999
Location: Prosper,
TX
Cobra Make, Engine: CAV GT40 #169, Ford 408 Stroker & ZF Transaxle
Posts: 2,408
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Not Ranked
I had a paxton on my Superformance (pics in my gallery) that work very well. Sold the car about 5 years ago and it is on Ebay for sale right now. There also is a 427 Kirkham on Ebay with twin Paxtons.......
http://cgi.ebay.com/ebaymotors/SUPER...m250241038359&
__________________
Gary
CAV GT40
Last edited by gsharapa; 05-04-2008 at 08:43 AM..
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05-04-2008, 06:00 PM
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CC Member
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Join Date: Feb 2006
Cobra Make, Engine: SPF 1421
Posts: 237
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Not Ranked
Twin Paxston's? Two fit? Wonder how much that would set me back??
__________________
Joe S.-LI Lake Grove
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05-04-2008, 06:57 PM
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CC Member
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Join Date: Feb 2002
Location: Gilroy,
CA
Cobra Make, Engine: West Coast Cobra w/ Centrifugally Blown Big Block, Pickles, Onions, on a Sesame Seed Bun.
Posts: 493
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Not Ranked
Purpose?
If I might ask, what is the goal of the twin paxton setup? For nostalgia purposes or the net power that results?
The reason I ask is that there are now single units available in a smaller form factor that support three times as much power as a single paxton ball drive, without the balls to wear out. Some even have helical gears for quiet operation.
The reason for the twin paxton setup at the time is because it was state of the art at the time for an under-hood (sorta) solution. If you want to replicate it for nostalgic reasons or aesthetics, by all means go for it. However, if you're just wanting the resulting power, a single Novi 2000 or similar will far surpass what a pair of the old SN series paxtons can put out and would be much easier to package and plumb.
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05-04-2008, 07:04 PM
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CC Member
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Join Date: Aug 2007
Cobra Make, Engine:
Posts: 87
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Not Ranked
I agree. The package that Shelby offers for the FE with the single carb in a box and one Vortech unit pumps out over 725hp and over 700 ft lbs of torque at 6 p.s.i. of boost at 6,000 rpm. That will easily propel a Cobra.
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05-05-2008, 02:00 AM
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CC Member
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Join Date: Aug 2000
Location: Uppsala, Sweden,
-
Cobra Make, Engine: ERA #696, Ford 427/482 CO
Posts: 76
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Not Ranked
Cobra Automotive sells the twin Paxton set-up.
http://www.cobraautomotive.com/horsepower.htm
__________________
HOB
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05-06-2008, 08:35 AM
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Evryday is a roadstr day
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Join Date: Jan 2004
Location: North Jakarta, Indonesia,
Oh
Cobra Make, Engine: RHD Hurricane street roadster HM1081 aging nicely in the garage
Posts: 5,725
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Not Ranked
Quote:
Originally Posted by mhacars
I agree. The package that Shelby offers for the FE with the single carb in a box and one Vortech unit pumps out over 725hp and over 700 ft lbs of torque at 6 p.s.i. of boost at 6,000 rpm. That will easily propel a Cobra.
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I think the phrase "propel a cobra" is a bit lacking in strength and amplitude. More like skid marks in your shorts for sure....but then, is enough ever enough?
__________________
aka Fuzzy ............... "It is not the return ON my investment that I am concerned about; it is the return OF my investment".... ...from Will Rogers
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