A460 INTAKE
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I was told the NEW TFS A-460 intake was better too.
I'm using the new TFS A-460 single 4-V intake on a 520 BBF.
I really did not check into the difference between the old TFS casting the the new one but, I did hear from a few guys that said the new casting was improved over the old one.
I have my 520 longblock assembled now and it should go to dyno in about 3 weeks!
I'm using the new TFS A-460 single 4-V intake on a 520 BBF.
I really did not check into the difference between the old TFS casting the the new one but, I did hear from a few guys that said the new casting was improved over the old one.
I have my 520 longblock assembled now and it should go to dyno in about 3 weeks!
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848 Posts
Well gents.. I hate to disagree...but..
I've run both intakes on my 540. ON -track testing showed me that the new intake was about .05 -.06 SLOWER . After 2 months of using the new 1 , I went back to the old one and picked up that .05 .
The new intake is taller and looks racier, but the ET don't lie..
Mike
I've run both intakes on my 540. ON -track testing showed me that the new intake was about .05 -.06 SLOWER . After 2 months of using the new 1 , I went back to the old one and picked up that .05 .
The new intake is taller and looks racier, but the ET don't lie..
Mike
Old style "A" head singly four vs. new
I spent a fair amount of time on this as well asking as many people as I could find the same question. For my application, street driven 3000-6500 rpm, 580", hood clearance an issue; I was told that the older shorter version was the better choice. As is shown by the post above there is no simple, new is better answer, it is as always combination dependent which is why there are at least three different Edelbrock offerrings for SBF's let alone what, 20 for SBC's and 10 for BBC's?
We don't have the luxury of so many choices, but it's sure better now than ten years ago. The new one has much greater plenum volume and the port entry height is almost double the old version. The carb pad height is also around and 1.25" higher.
Interestingly the old style TFS A mnaifold, and the out of production Motorsport version from what I hear, is actually lower than the Edelbrok Victor 460 for conventional 429-460 heads. This helps me as I have room for a small spacer, nitorus plate and a shear plate. We'll see what is best on the dyno and then in the car.
I spent a fair amount of time on this as well asking as many people as I could find the same question. For my application, street driven 3000-6500 rpm, 580", hood clearance an issue; I was told that the older shorter version was the better choice. As is shown by the post above there is no simple, new is better answer, it is as always combination dependent which is why there are at least three different Edelbrock offerrings for SBF's let alone what, 20 for SBC's and 10 for BBC's?
We don't have the luxury of so many choices, but it's sure better now than ten years ago. The new one has much greater plenum volume and the port entry height is almost double the old version. The carb pad height is also around and 1.25" higher.
Interestingly the old style TFS A mnaifold, and the out of production Motorsport version from what I hear, is actually lower than the Edelbrok Victor 460 for conventional 429-460 heads. This helps me as I have room for a small spacer, nitorus plate and a shear plate. We'll see what is best on the dyno and then in the car.
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5,320 Posts
The old style intake looks rather rough but it works quite good. From my understanding it runs better than the newer better looking version on many engines. Mostly under 7000rpm and or 600cid.
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524 Posts
I have been reading about these manifolds for sometime now. From the literature the old TFS carb pad height is 6.0" tall but everybody suggests a minimum of a 1" spacer to make this intake function well. The Victor is 6.3" so that seems similar to the old style TFS in height and is suggested to run a spacer with this intake as well. The new TFS intake has a pad height of 8.6 similar to the single 4 C460 intake.
Could it be that in sub 550 CI engines the newer intake just doesn't carry as much carb signal due to the longer/different runner length/volume and increased plenum volume? I am guessing that on a 572 or 598 the newer intake would equal or surpase the performance of the old one. I am also curious if the newer intake carries RPM higher than the older one? Similar to like a Torquer intake vs. Victor for production heads. Any else have any thoughts on this.
Could it be that in sub 550 CI engines the newer intake just doesn't carry as much carb signal due to the longer/different runner length/volume and increased plenum volume? I am guessing that on a 572 or 598 the newer intake would equal or surpase the performance of the old one. I am also curious if the newer intake carries RPM higher than the older one? Similar to like a Torquer intake vs. Victor for production heads. Any else have any thoughts on this.
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360 Posts
Opinions on intakes
Here is what I think. I think the old style is much better for carb/gas set up. I think the new style is the way to go if you are running a injection/alky set up.
Here is what I think. I think the old style is much better for carb/gas set up. I think the new style is the way to go if you are running a injection/alky set up.
Phillip Oakley's 572" ran quicker with the old manifold . By the time the Goza 1/4" throttle feed plate and the extra gaskets were on it , it looked more like 2 3/8" total spacers . When the opportunity presents it's self , I am going to see if the big manifold can be crutched with a four hole spacer etc .
Mustangracer ,
I think you are on the right track . A high HP engine's volume demand with alky is such that it may get a little crowded with the smaller runner entry . Also , alky is more of a torque deal and should cover up some of the tq lost due to the slower air speed in the large runner .
Does anyone know how to breed manifolds ? I'd like to have a pup out of the old and new that was 1/2 way between the two .
I think you are on the right track . A high HP engine's volume demand with alky is such that it may get a little crowded with the smaller runner entry . Also , alky is more of a torque deal and should cover up some of the tq lost due to the slower air speed in the large runner .
Does anyone know how to breed manifolds ? I'd like to have a pup out of the old and new that was 1/2 way between the two .
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