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Discussion Starter · #1 ·
Does anyone have any experience with the intake spacers? Will adding a half inch of length to the runner really make any difference? The part is cheap and the install is easy, so I am curious if $40 will buy 2 hp? They claim 2-7 hp, but I really doubt there is anywhere near that much gain in one. The theory sounds right, but the actual effect is what I'm wondering about.
 

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What I have been told about those is that it adds volume and increases the tumbling effect of the intake. Basicly it extends the upper intake and insulates the the upper from the lower aluminum in the hopes of getting a cooler denser air flow. I have had some on a couple of vehicles I have owned and they seem to add power it will give a better throttle response. But I did not know that they were making them for a bullitt.
 

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I had thoughts of making one for the manifold to head mounting point,to help insulate the manifold from head heat. However, the intake water crossover would have to be seperate to make a big difference.
 

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Discussion Starter · #5 ·
Graves said:
I've only seen them for Machs or for normal GTs.
I don't know what the differences are between the Machs, GT, and Bullitts. I wonder if one is close enough that it could be modified. I have access to a machine shop at work. I could try to make one, but I'd need a gasket. Is there a gasket between the upper and lower now that I could get to address that?
 

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It's a waste of time. Lengthening the runners will lower your torque peak, on our cars probably by 200 rpm or so.

They do nothing to insulate the air charge. If you do this AND block off the blazing hot exhaust gas that the EGR is dumping into the intake ( and return for a lean condition you've now introduced) you might get 5hp.

A 2-7hp claim is no gain. You can run the same car twice with no change and get that same power gain. Meaningless.

What are your goals for the car, how is it driven and why do you want more power? Is mileage a concern?
Don't look at power numbers in a vacuum.
I can easily do like most tuners and tune a car to make 15 more hp than I usually do.
The diffeence is, cars I've tuned actually drive reliably on the street and last forever. I can't say the same for other tuners.
Power numbers aren't everything.

Most people would gladly give 20hp for a car that started easier, idled smoother and stayed together no matter what abuse they threw at the car on the street.

Save your money and
 
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