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Old 04-17-2004, 10:38 AM
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More Power???

Own 1966 Ford Mustang 289 automatic. The only improvment really on the car when purchased was an exhaust. Here is a list of what has been purchased:

Edelbrock Performer Series - Intake Manifold
Non-EGR; Idle to 5500rpm; w/OEM 4 bbl Carb; Cast Finish

Edelbrock Performer Series - Carburetor
500cfm or 600cfm (havent decided); Square-Flange; Manual Choke; w/o EGR

Edelbrock Performer-Plus Camshaft Kit - Ford 289-302
Hydraulic; For Off-Idle To 5500 RPM; Valve Lift Intake .448; Exhaust .472

Sure Seat Valve Springs - Valve Spring Kit
Complete Kit: Valve Springs; Retainers and Locks

Hooker competion headers

New water pump

Will i notice the upgrade in power when i drive is the main question?

Also just ballpark figure how many hp do you think this will increase?

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Old 04-17-2004, 12:32 PM
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come on

guys, being a car newbie, i just need one okay from one of you car guys so that i feel more confident about my purchases.
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Old 04-17-2004, 01:34 PM
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How much power

Hello calimustang66;

The '66 289 Mustang with 4bbl carb is rated at 225hp @ 4800rpm and 305 ft/lbs of torque @ 3200rpm in my book (both at the flywheel). Just about the maximum horsepower you will ever get out of it is actually based on it's ability to breathe and that's why we add all the goodies.

The heavy question is "What do you want the car/engine to do"? The next question is "Do you have a plan"? All this stuff has to be matched up you know. The next question is "What is the financial situation"? The next question is "Are you doing the work yourself"? The next question is "What sort of shop/tools do you have'? The last question is "What sort of patience do you have"?...LOL.

To answer your question about noticing the difference...I see a possible max of 277hp (a 52hp/23% gain) in good tune. You would definitly notice the difference! I just roughed this figure out, allowing 12hp for the manifold, and 20hp for the cam. Headers mean duals, so I allowed 20hp for all exaust changes.

Let's see what others have to say...
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Old 04-17-2004, 01:38 PM
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THANK YOU

SpIIrit,

You are a life saver, i have been watching these boards like a hawk looking for a reply. Now that i have a boost of confidence i think the wheels are in motion for me to start my FIRST automotive project. Thanks again.
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Old 04-17-2004, 04:00 PM
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Carb choice

Alright 66, better hurry or you'll miss the bus...LOL.

A certain engine demands a minimum airflow in CFM (cubic feet/minute) for max efficiency; Use this formula to determine any of your future carb. size/engine cid. matching and order with confidence...

For you math guys, the formula looks like this:
CID x max RPM / 3,456 = CFM

(example: 289 x 5500 rpm = 1589500 / 3456 = 451 cfm)

The engine in the above example would need a 500-cfm carburetor to run at 100 percent volumetric efficiency but... Only the mostly highly modified and efficient race engines can get even close to 100 percent efficiency. Most street motors are closer to 85 percent, however the formula gives you a baseline. Therefore, a 500 carb would be just about perfect.

So, in your case the 500 is "right on" where the 600 would "Overcarburate" and be a tad sluggish.

66, such formula is everywhere online. You name it it's in there, Use the search engine (your main online page) and associated "Keywords" to get whatever you want.
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