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10-15-2003, 03:50 AM   #1 (permalink)
chevelle502rat67
 
Join Date: Oct 2003
Posts: 3
How much will a supercharger add?

I have a 89 notchback with aod. all stock exept for a C&L 73MM mass air, 65mm Tb and 30# injectors, Just wondering how much more power a supercharger would make on my car? I will be using it for street and some racing one and a while. I will be converting to 5 speed shortly..What would it take to get into the 12's with a supercharger?[img]/phpBB/images/smiles/icon_confused.gif[/img]
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10-15-2003, 04:50 AM   #2 (permalink)
1 Bad 88 GT
 
Join Date: Feb 2001
Location: Indy
Posts: 3,472
How much will a supercharger add?

Any SC will get you into the 12's. IMHO if you're considering a blower start looking at the 11's.
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10-15-2003, 06:19 AM   #3 (permalink)
Huskinhano
 
Join Date: Feb 2003
Posts: 112
How much will a supercharger add?

Traction! My brother owns a '89 also. It has GT40 heads and intake, JBA headers, high flow cats, Flowmasters and a Vortex pumping over 10 psi. It's an animal! Make ABSOLUTELY sure you have big injectors and pump!!!
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10-15-2003, 10:04 AM   #4 (permalink)
69XL
 
Join Date: Oct 2002
Posts: 234
How much will a supercharger add?

Like Huskinhano said...

You best have some $$ for suspension and tire upgrades or you’ll never see the drop in ETs you want…

but you may be able to take home a trophy in the burnout contest [img]/phpBB/images/smiles/icon_smile.gif[/img]
[addsig]
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10-15-2003, 12:19 PM   #5 (permalink)
Beoweolf
 
Join Date: Jun 2002
Posts: 3,774
How much will a supercharger add?

Most claim 40 - 50% over base horsepower at 6 - 8 lbs boost. When you add in better heads, more fuel, headers, exhaust improvements, intercooler, higher boost...it adds up pretty quick.

My personal "rule-of-thumb" is based on atomspheric pressure. Since air pressure is about 14 lb/sq in. ... if you add ~7lbs. boost, that is 50% extra pressure which allows the motor to make 50% more power. IF you kick the boost up to 14 lbs. you double the pressue and get roughly double the power. There are other variables that come into the picture, and you need to make sure the foundation (block, crank, ignition, sealing...etc) will stand up to the boost...but it is usually very accurate.

Like they mentioned, you will be traction limited more than power limited. There is a lot of "giddy up" in a mustang just from suspension improvements.

PS* you may find that as the power goes up, it might be better and more consistant to keep the automatic, either get a beefed up AOD or swap out to a C-4. Less shock on the tires, more consistant runs, a good well matched torque convertor will give you preety much the same or better off the line times as a manual...and you won't have to worry about blowing the clutch. [img]/phpBB/images/smiles/icon_cry.gif[/img]

<font size=-1>[ This Message was edited by: Beoweolf on 10/16/03 12:27am ]</font>
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10-15-2003, 01:06 PM   #6 (permalink)
chevelle502rat67
 
Join Date: Oct 2003
Posts: 3
How much will a supercharger add?

Will the supercharger affect my idle? As far as the suspension on my car it has uper and lower traction bars, Also what supercharger do anyone recommend?
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10-15-2003, 01:54 PM   #7 (permalink)
1 Bad 88 GT
 
Join Date: Feb 2001
Location: Indy
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How much will a supercharger add?

If installed properly and tuned well it won't affect idle quality at all.

The kit depends on how much you want to spend and what you want to do with it. They can be from 6psi belt driven for $2400 to a kit up to 14-18psi for about $3400. Personally I like the ATI intercooled kits or a Novi 2000.
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10-15-2003, 03:12 PM   #8 (permalink)
chevelle502rat67
 
Join Date: Oct 2003
Posts: 3
How much will a supercharger add?

How much horse power would you think i have with a 6 or 8 psi Supercharger on what combinations i have?
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10-15-2003, 04:25 PM   #9 (permalink)
SlowFord
 
Join Date: Sep 2001
Posts: 279
How much will a supercharger add?

When I added a 6-psi Powerdyne supercharger to my '88 Mustang, my quarter mile times dropped by about 1 second and the trap speed went up by 9 mph. But I am not sure exactly what that equates to in horsepower gained.

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10-15-2003, 09:47 PM   #10 (permalink)
1 Bad 88 GT
 
Join Date: Feb 2001
Location: Indy
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How much will a supercharger add?

75-80hp would be a good safe guesstimate for a basically stock 5.0. With good heads and intake 100-150+ would be expected.
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