GT-40 Tubular Intake Question
#1
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GT-40 Tubular Intake Question
The GT-40 tubular intake was designed for a 65mm throttle body. I have read that they can be "ported" to accept a 70mm throttle body.
I have seen no references to fitting a 75mm throttle body -- my question is, can it be opened up that far? Or is my only option to stick with a 70mm throttle body?
I want to keep the intake for 3 reasons: (1) I already own it; (2) I like the asthetic look of it; and (3) I want to keep as many visible mods as possible period correct, as to what an original owner would have done.
The intake will be on a 347 stroker engine with stage 2 ported Trick Flow Twisted Wedge Heads.
Thanks in advance for your answers.
I have seen no references to fitting a 75mm throttle body -- my question is, can it be opened up that far? Or is my only option to stick with a 70mm throttle body?
I want to keep the intake for 3 reasons: (1) I already own it; (2) I like the asthetic look of it; and (3) I want to keep as many visible mods as possible period correct, as to what an original owner would have done.
The intake will be on a 347 stroker engine with stage 2 ported Trick Flow Twisted Wedge Heads.
Thanks in advance for your answers.
#2
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Im no expert, but I think with that intake, a 70mm throttle body will be sufficient. With a 347, and those heads, you leaving a lot of potential HP out with that intake setup, just my 2 cents.
#3
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I saw an article that said the GT40 flowed, and had as good or better torque than the competition intakes ut to and a bit over 6000 rpms. Since I am not planning on winding a 347 stroker much higher than that anyway, I figure I am good with this intake...
I will leave the 7500 rpm excursions to my 69 BOSS 302 at Willow Springs...
The question is still unanswered: Has anyone put a 75mm throttle body on a GT 40 tubular intake????
I will leave the 7500 rpm excursions to my 69 BOSS 302 at Willow Springs...
The question is still unanswered: Has anyone put a 75mm throttle body on a GT 40 tubular intake????
#4
i say no. you "might" be able to for 1/8th inch or so, but your going to be cutting in where the flange and tube welded together. which could cause them to split apart.
a 70 is fine on that.
a 70 is fine on that.
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