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A460 single vs. tunnel ram

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Post  fastashley October 16th 2016, 10:23 am

Building a 598 for next summer. Bought some A460s from another forum member. This is my first experience with A460s so I'd like some opinions on intake.
Ported (big time) FMS A460's. Titanium 2.35/1.94. T&D shaft. 74 cc
4.600x4.500 Probably Lunati rotating
Cam in the low .800s
Vehicle- '77 f150 4x4- 4000lbs

This is a sand drag vehicle for fun only. There are no class rules, just run against similar vehicles. Torque is the key with these trucks. Track length is between 300'-500'. I believe the foot brake method is actually faster than the trans brake. I already have a tunnel ram for the A460 heads, and was seriously considering an Enderle injection setup. Am I shooting myself in the foot with the tunnel ram? These races are often won or lost at the line. Would a single Dommi actually be faster ?

fastashley

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Post  fastashley October 16th 2016, 10:36 am

Plan on shifting at 7000

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Post  Lem Evans October 16th 2016, 10:54 am

One BIG 1X4 carb would get my vote for your application.

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Post  fastashley October 16th 2016, 11:45 am

I do have a brand new SV1 1350

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Post  68formalGT October 16th 2016, 9:45 pm

You could have Keith make you one of his in between custom intakes. I'd like to see what one would make on a 598-605 or so.

http://www.keithfulpmotorsports.com/intake-manifolds.html
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Post  Scott Foxwell October 21st 2016, 8:57 am

It's too bad there aren't more or better cast TR choices for the BB Ford. Any engine would benefit from one if it's properly designed for the combination. Most people think a TR is "high rpm race only" but if you think about it, most of the cars we drive today have "tunnel rams" on them, they're just laid down to fit under the hood. Wink

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Post  68formalGT October 21st 2016, 9:56 am

The Trick Flow(new style) tunnel ram that Keith Fulp put on his Interceptor build worked pretty good.

https://www.429-460.com/t16558-keith-fulp-s-618-a-head-interceptor
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Post  Scott Foxwell October 21st 2016, 11:10 am

68formalGT wrote:The Trick Flow(new style) tunnel ram that Keith Fulp put on his Interceptor build worked pretty good.

https://www.429-460.com/t16558-keith-fulp-s-618-a-head-interceptor
I followed Keith's build pretty closely. Very impressive, but, as he said;

"I took a normal Trick Flow A460 cast tunnel ram and ported on it for three full days"

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Post  68formalGT October 21st 2016, 11:42 am

Scott Foxwell wrote:
68formalGT wrote:The Trick Flow(new style) tunnel ram that Keith Fulp put on his Interceptor build worked pretty good.

https://www.429-460.com/t16558-keith-fulp-s-618-a-head-interceptor
I followed Keith's build pretty closely. Very impressive, but, as he said;

"I took a normal Trick Flow A460 cast tunnel ram and ported on it for three full days"

He did say the new, new one that doesn't have the t-Stat housing weights a lot less. Less time removing excess weight.
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Post  Lem Evans October 21st 2016, 7:51 pm

Manifolding is application driven. What a guy would run in top sportsman and what should be run at 4,000# foot braked in 300' ain't the same i.m.o.

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Post  fastashley October 23rd 2016, 8:08 am

That was why I gave the details I did. The guy that cuts the best 'light' in sand drag usually gets the win. I need to leave hard and let them try to catch me

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