How does it compare?
#12
This might be of some help?
Dyno Number Trickflow R vs GT40
GT-40 vs. TFS R
A number of things are obvious from this graph. The first thing is that the TFS R made a great deal more power than the same motor equipped with a GT-40. Though 25 extra horsepower is nothing to sneeze at, the extra power was only available after 5500 rpm. Up to 5550 rpm, the modified GT-40 showed some pretty impressive gains from 3300 rpm all the way to 5550 rpm. Time and time again, the GT-40 continues to impress, though the TFS R intake clearly made more top-end power on this high-revving 347.
Here's another
Muscle Mustangs/Fast Fords super intake shootout
http://www.musclemustangfastfords.co...per/index.html
And I completely agree.... nothing beats the looks of a Tubular Gt-40!
Dyno Number Trickflow R vs GT40
GT-40 vs. TFS R
A number of things are obvious from this graph. The first thing is that the TFS R made a great deal more power than the same motor equipped with a GT-40. Though 25 extra horsepower is nothing to sneeze at, the extra power was only available after 5500 rpm. Up to 5550 rpm, the modified GT-40 showed some pretty impressive gains from 3300 rpm all the way to 5550 rpm. Time and time again, the GT-40 continues to impress, though the TFS R intake clearly made more top-end power on this high-revving 347.
Here's another
Muscle Mustangs/Fast Fords super intake shootout
http://www.musclemustangfastfords.co...per/index.html
And I completely agree.... nothing beats the looks of a Tubular Gt-40!
#16
I would seriously think twice about running a tubuar GT-40 on your 331. If this is an intake thats going on your current engine, you kinda have to ask yourself... "Do I really have the money to buy two intake manifolds??"
#18
It's weird though guys... from all the "flow charts" (I believe that's what they're called) the tubular gt40 intakes seem to out perform the other intakes from 1000 rpms - about 5600 rpms! With my setup I wouldn't need to go much past that rpm range! I dunno? if I got everything ported it would work awesome... correct?
#20
ok... I think I may try and find one then! exciting! does anyone know of any for sale? I checked ebay but all they had was the upper with no lower? so, If I bought the upper could I buy a new lower that would fit? do they sell the lowers new?