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  #16 (permalink)  
Old 10-22-2012, 03:23 PM
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Or plumb the plenum/runners for engine coolant. It wouldn't win any beauty contests, but...

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  #17 (permalink)  
Old 10-22-2012, 03:44 PM
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Originally Posted by toddalin View Post
Don't be so sure about that until you read this article with dyno tests. Carb pretty much beat port injection from their start point of 3,000 RPM up the band.

Quick Test: Carbs Vs. Fuel Injection On Holley
You're comparing two different intakes within that FI VS carb debate. I have never seen a back to back FI and carb dyno test on the same intake with the same throttle diameter.
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Old 10-22-2012, 05:49 PM
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You're comparing two different intakes within that FI VS carb debate. I have never seen a back to back FI and carb dyno test on the same intake with the same throttle diameter.
Did you read the article? Same intake.

Sure one had two 750 carbs and one had an 1150 CFM throttle body, but that wouldn't matter because neither is the limiting factor. Both ensure that the engine can get all it needs. Everything from the plenum down is the same.

Actually, if you run a carb, you woudn't have those fuel injectors down by the intakes screwing up the flow path, that were present in their carb test.

And regarding cooling the manifold, this is not an air-to-air or air-to-water type cooling situation. This is a change in the phase from a liquid to a gas (the way an air conditioning unit works) and is far more efficient. This is the same way in which alcohol injection work, though nowhere near to that extent.
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  #19 (permalink)  
Old 10-22-2012, 06:51 PM
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Quote:
Originally Posted by toddalin View Post
Did you read the article? Same intake.

Sure one had two 750 carbs and one had an 1150 CFM throttle body, but that wouldn't matter because neither is the limiting factor. Both ensure that the engine can get all it needs. Everything from the plenum down is the same.

Actually, if you run a carb, you woudn't have those fuel injectors down by the intakes screwing up the flow path, that were present in their carb test.

And regarding cooling the manifold, this is not an air-to-air or air-to-water type cooling situation. This is a change in the phase from a liquid to a gas (the way an air conditioning unit works) and is far more efficient. This is the same way in which alcohol injection work, though nowhere near to that extent.
you must have posted the wrong article, the one you posted clearly shows two different intakes.
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Old 10-22-2012, 07:57 PM
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you must have posted the wrong article, the one you posted clearly shows two different intakes.
No I didn't.

"Can carburetors still compete with modern fuel injection when it comes to power production at wide-open throttle? The answer to this question came from Holley, thanks to its new Hi-Ram intake manifold designed for rectangular-port LS3 applications. The top of the Hi-Ram is interchangeable, and Holley offers both a throttle-body and dual-carburetor flange."
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  #21 (permalink)  
Old 10-22-2012, 08:16 PM
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Originally Posted by toddalin View Post
No I didn't.

"Can carburetors still compete with modern fuel injection when it comes to power production at wide-open throttle? The answer to this question came from Holley, thanks to its new Hi-Ram intake manifold designed for rectangular-port LS3 applications. The top of the Hi-Ram is interchangeable, and Holley offers both a throttle-body and dual-carburetor flange."
yea... I'll give you half the intake is the same, but half of an intake really isn't good for anything. That top make a BIG difference.
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Old 10-22-2012, 08:23 PM
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[QUOTE=AutoGear;1601921]Bogie;

Thats all great but what about the 'Tornado' devices that help "straighten out" the airflow, before it hits the floor of the plenum and makes a few 90* turns???
The guy on TV said they're great.QUOTE]

I use a HVH Super Sucker 1 in. spacer on top of my Airgap. A notable difference in the mid to top range. At least by seat of the pants!!
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