Shaker hood setup really that much stronger ?

'68StangGT

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Feb 26, 2002

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Haslett, MI

Aug 2, 2004

#1

• Aug 2, 2004

• #1

Follow me here ...

Cars that came stock from the factory - lets say they are set up the same

for the sake of this discussion - all three are 1970 fastbacks

same engine / tranny / rear gear set up

One has a Shaker Hood

One has the MACH 1 style hood

One has the closed (no scoop) hood

Is the shaker the strongest option ?


Since my main concern is between a MACH 1 kinda hood and a Shaker -

Anyone know of dyno results that show two cars that are basically the same, but one have a MACH 1 style hood and the other a Shaker ?

 

Hack

15 Year Member

Mar 23, 2004

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Minneapolis

Aug 2, 2004

#2

• Aug 2, 2004

• #2

Well, just thinking about your question.. the difference would theoretically be a ram-air effect on the shaker set-up? If indeed there was a difference, it wouldn't show up on a chassis dyno, since the car is not moving.

 

6

67GTA-FB429

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Dec 15, 2003

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Tri-Cities, Wa

Aug 2, 2004

#3

• Aug 2, 2004

• #3

The shaker since it is theoritically bringing in cooler air from outside the engine bay there will be more O2 for combustion since it is a denser charge.

 

mustang70

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San Diego

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#4

• Aug 2, 2004

• #4

Most of the time the Mach 1 scoop wasn't open. At least I think so. The shaker scoop was fully functioning.

You can cut the hood open and make the Mach 1 scoop functional, but then the weather can get in. The shaker has a flap that opens and closes. So it could keep the rain and stuff out if needed.

Not sure if this helps.

 

D

D.Hearne

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Sep 29, 2000

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south louisiana

Aug 2, 2004

#5

• Aug 2, 2004

• #5

There's probably not 10 hp difference between the two. And the difference if any would only be at high speeds.

 

6

'69Mach1Chick

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Apr 1, 2002

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#6

• Aug 2, 2004

• #6

In the last issue of...i think car craft or hot rod....they show different intake/hood setups and how much hp you get from each.

 

B

bnickel

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Aug 21, 2002

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lubbock, texas

Aug 2, 2004

#7

• Aug 2, 2004

• #7

one thing you can do if you decide to cut the hole under the mach scoop, is to to drill about 4 holes in the bottom of the factory air cleaner base and use a hipo 289 air cleaner lid, like the 69-70 shelby's used, this is the exact same air cleaner assembly used on them but with a different hood. the 69-70 shelby's did not have a flap either, at least that i am aware of, hence the drain holes in the base of the air cleaner. i am useing what i have just described to you, eventually with the correct style air cleaner to hood seal. good luck

 

'68StangGT

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Haslett, MI

Aug 2, 2004

#8

• Aug 2, 2004

• #8

good to know info

thanks

 

mfp4073

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Hells Ditch, FL

Aug 2, 2004

#9

• Aug 2, 2004

• #9

My father did some cypherin and fiiggerin many years back. And his outcome was that other than getting fresh air to the motor, the ram/shaker hood does nothing to actually "force feed" the motor. I dont remember the speed, but it was pretty fast that you got a ram effect. Basically by the time you get going fast enough for it to help the aerodynamics are more important.

 

Route666

Active Member

Aug 16, 2003

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Brisbane, Australia

Aug 3, 2004

#10

• Aug 3, 2004

• #10

At any rate, scoops and shakers are dang cool ideas.

With the shaker too, it has an opening inside the engine bay as well doesn't it?

 

D

D.Hearne

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south louisiana

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#11

• Aug 3, 2004

• #11

Yea, they still had the "snorkel" sticking off to one side of the cleaner like the others,

 

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67GTA-FB429

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Tri-Cities, Wa

Aug 3, 2004

#12

• Aug 3, 2004

• #12

but once the vacuum dropped the flap opened and in comes cool air.

 

Route666

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Aug 16, 2003

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Brisbane, Australia

Aug 4, 2004

#13

• Aug 4, 2004

• #13

Ahh right, so they had a vacuum-controlled flap? That makes it seem reasonable then.