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Author Topic:   Super Charger?!?
Stang28965
Gearhead

Posts: 367
From: Webster New York USA
Registered: Mar 2001

posted 09-19-2001 06:39 AM     Click Here to See the Profile for Stang28965   Click Here to Email Stang28965     Edit/Delete Message   Reply w/Quote
This summer I was thinking of getting a super charger, I have it down to two types, The original Paxton that shelby used, or the Holley "powercharger" Which one is better? I don't really feel like having a bigger hood so I can fit in the Holley, but if its a better charger then it is possible. Also does anyone here have one on their 289? Is it that much of a hp gain? Would I notice an d would it be worth while? Thanks in advance

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unklshu
Gearhead

Posts: 680
From: San Bernardino, Ca
Registered: Jul 2001

posted 09-19-2001 09:38 AM     Click Here to See the Profile for unklshu   Click Here to Email unklshu     Edit/Delete Message   Reply w/Quote
I'm not sure about the Holly unit but superchargers in general give you one great rush. It's that slamming of your body into your seat kind of rush that is diffinatly worth the money IMHO

joe

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blown289
Gearhead

Posts: 131
From: Orlando, Florida
Registered: Aug 99

posted 09-20-2001 10:31 PM     Click Here to See the Profile for blown289   Click Here to Email blown289     Edit/Delete Message   Reply w/Quote
I have a Paxton SC on my 289.I have no complaints yet after 8000 miles in 2 years.I cant rate the single upgrade becouse I did many upgrades at the same time,like t-5,3:55 gears,alum heads,cam,msd etc.Its very fast,but not like a built up big block.My suggestion is do all the other performance upgrades and if you still have money left,then go for it!

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JAAZZY
Gearhead

Posts: 745
From: Bay Area, CA
Registered: Apr 2001

posted 09-21-2001 12:12 AM     Click Here to See the Profile for JAAZZY     Edit/Delete Message   Reply w/Quote

The holley blower will produce instant boost. I believe it is a 6-71 blower. The boost will not be dependent on rpm like with the Paxton. Personally though I don't like the 6" sccops so I'd stay with something under the hood. Also I think the Paxton for early cars with carbs is only 6psi.

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jkilroy
Gearhead

Posts: 1635
From: Vicksburg, MS
Registered: Dec 99

posted 09-23-2001 12:52 PM     Click Here to See the Profile for jkilroy   Click Here to Email jkilroy     Edit/Delete Message   Reply w/Quote
You might consider something like a B&M or Kenne Bell which are the low profile roots type blowers. That way you could get away with minor hood protrusions and you would not have to deal with the blow through problems with carbs. Plus, as has already been mentioned, the boost of these types of blowers is RIGT NOW! No waiting for the blower to spool up.

------------------
Jay Kilroy
68' Fastback GT 390
"No such thing as a cam thats too big"

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Stang28965
Gearhead

Posts: 367
From: Webster New York USA
Registered: Mar 2001

posted 09-23-2001 01:00 PM     Click Here to See the Profile for Stang28965   Click Here to Email Stang28965     Edit/Delete Message   Reply w/Quote
Thanks for the info. Where can I buy these other types of blowers? I have only seen paxton and holley listed for my car

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n2oMike
Gearhead

Posts: 1356
From: Spencer, WV
Registered: Jan 2001

posted 09-23-2001 01:22 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
The Holley 174 is the low-profile roots blower. It's the one listed in Summit. It's basically the same thing as the old B&M unit mentioned in this thread. B&M sold these, then Weiand took over, now Holley. It's the same thing. I'd choose it way before putting an old Paxton on there. I believe all Paxton offers is their old "Ball Drive" unit that isn't that efficient, is small, and only builds around 5-6 psi.

The "Roots-Type" Holley takes the place of the intake and draws through the carb instead of ulilizing that funky "bonnet" you need with the centrifugal blower.

You might try joining some of the mailing lists, or asking the "racing" forum about tuning info.

Personally, I'd just go to a stroker 351W, and forget the tuning hassles. 408ci will make you forget about the blower.

If you're set on a blower, get the Holley... a specially tuned "blower" carb will be required as well. You can modify a regular carb yourself, or purchase one modified from a carb tuner/builder. You might possibly need a cowl-induction hood. 2.5" would be plenty.

Good Luck!

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367

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richard bohm
Gearhead

Posts: 373
From: tucson,az-luray,va
Registered: May 2001

posted 09-23-2001 04:28 PM     Click Here to See the Profile for richard bohm   Click Here to Email richard bohm     Edit/Delete Message   Reply w/Quote
there you go many different opinions about superchargers. here is another. paxton does offer other superchargers that fit the early mustangs, and even the old one can produce more than 6 psi boost. most of the chargers on the market today can build upwards of 12 psi with the right pulleys. the roots type blowers need vertical space where as the centrifugal blowers need room at the front of the engine. blower are nice because they make the engine behave bigger than it really is. stroker motors carry their cubes all the time, the supercharged mtors dont. both are going to cost about 2200.00 minimun so pay your money and take your choice. me like the old paxton although i have thought about using the holley charger.

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blown289
Gearhead

Posts: 131
From: Orlando, Florida
Registered: Aug 99

posted 09-23-2001 08:25 PM     Click Here to See the Profile for blown289   Click Here to Email blown289     Edit/Delete Message   Reply w/Quote
If you buy a new Paxton, then its not and old Paxton.They have made improvements without changing the appearance!

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Stang28965
Gearhead

Posts: 367
From: Webster New York USA
Registered: Mar 2001

posted 09-23-2001 08:52 PM     Click Here to See the Profile for Stang28965   Click Here to Email Stang28965     Edit/Delete Message   Reply w/Quote
I was going to get the stock fiberglass shelby hood, so I don't really want a cowl 2 1/2 hood. Do you guys know of good places to buy the chargers? Also what has to be done to the carb, i have a Holley 4bbl 600cfm carb now. thanks for the help/info.

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franklin
Gearhead

Posts: 128
From: VA
Registered: Nov 2000

posted 09-23-2001 09:44 PM     Click Here to See the Profile for franklin     Edit/Delete Message   Reply w/Quote
Don't worry about some of the blowers not producing over 6psi, unless you are going to modify the motor from stock.

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n2oMike
Gearhead

Posts: 1356
From: Spencer, WV
Registered: Jan 2001

posted 09-23-2001 10:51 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
I believe you'll be happier with the power of the Holley unit. It's "draw through" design is a bit easier to carb tune as well. As for cowl hoods... look at the sites on my signature. My car has a 2.5" cowl hood. It's rather understated. I like it.

With the roots blower, you don't have to wait for boost. The centrifugal blowers don't start making boost until around 3-4k rpm in most cases. The Holley's "snout" pulley is offset up and to the side for distributer clearance, and so the unit can sit lower. There's a link to it at the Holley site.

http://www.holley.com/HiOctn/ProdLine/Products/AMS/SC/SCK/77-174_FSBP.html

Good Luck!

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367

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n2oMike
Gearhead

Posts: 1356
From: Spencer, WV
Registered: Jan 2001

posted 09-24-2001 11:13 AM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
Whichever way you decide to go, a device that retards timing with boost will be necessary to stay out of detonation. One simple such device is the MSD 6BTM... (boost timing master)

With this, you simply turn the dial, and it automaticall retards the timing "X" degrees per pound of boost. If you set it for "1", it retards the timing one degree for each pound of boost. So as the boost climbs, the timing gets retarded more and more... keeping the engine out of detonation.

I consider one of these MANDATORY on any blower application. The EFI guys have custom chips burnt to do this. I believe MSD also has an add-on to work with their MSD Digital 6+.

I'd go ahead and spend around $170 on an MSD billet distributer at the same time. These come with a big cap, but can be replaced easily with a smaller one if space is at a premium.

This might seem like a big job... and it is, but it helps to be informed so it gets done right... the FIRST time.

Good Luck!

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367

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