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View Poll Results: Which is better for boost
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Hi Ram vs Pro Flo

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Old Sep 15, 2025 | 03:00 PM
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Default Hi Ram vs Pro Flo

I’m building a turbo 5.3 ls foxbody trying to decide between intake Hi Ram or Pro Flo looking for feed back to help decide. I like the Pro Flo because I can run a smaller cowl hood but if the Hi Ram outperforms it greatly I will go with it.
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Old Sep 15, 2025 | 06:28 PM
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Following. I run a Hi Ram.
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Old Sep 15, 2025 | 08:20 PM
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I run a ProFlow. Because, at the time I bought it, one of the class leaders in Ultra Street/Extreme Street was using one. When I spoke to him about it, he said he had tested all the different ones available at the time, and the ProFlow was the winner. This was in 2016 time frame.

Obviously, the nice thing about the Hi Ram is that you can use an integrated I/C if you so desire.
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Old Sep 16, 2025 | 08:50 AM
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I believe they have both been compared on the dyno to each other by Richard Holdener in the same test. They are very close to each other.
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Old Sep 17, 2025 | 09:54 PM
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IIRC, the Proflow is slightly better than the hi ram and also has better distribution. Only reason I ran the hi ram over it, was because i preferred the looks of the hi ram.
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Old Sep 18, 2025 | 08:03 AM
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What about the BTR manifold or the Shearer Surge intake?
Why aren't those being considered?
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Old Sep 18, 2025 | 11:14 AM
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I believe way back when the two intakes tested within a couple hp of each other.

If you go with the ProFlo get the LS2 version. It has the std 4 bolt throttle body pattern.
The LS1 version accommodates the 3 bolt Camaro/truck throttle body. The std 4 bolt won’t fit.

I bought mine back in 2013, and still run the little 3 bolt TB.
It was about $400. My how times have changed.
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Old Sep 19, 2025 | 05:15 PM
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Pete I think Jesse Coulter ran a Pro Flo in his 3rd gen Ultra car.

It would be slight pain for me to swap to one, but it's crossed my mind a few times, I could run a stock SS hood.

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Old Sep 20, 2025 | 09:45 AM
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Originally Posted by Pro Stock John
Pete I think Jesse Coulter ran a Pro Flo in his 3rd gen Ultra car.

It would be slight pain for me to swap to one, but it's crossed my mind a few times, I could run a stock SS hood.
Jesse is the guy I was talking about. He and I have chatted quite a few times about his setup…
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Old Sep 20, 2025 | 05:47 PM
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Paul Falcon used to run a pro flo in his Formula builds but Jesse went quicker.

Jesse is redoing his 3rd gen (back to turbo), still LS.

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Old Sep 20, 2025 | 07:17 PM
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Glad to hear he’s working on bringing that back.

Paul’s Formula was uber cool…
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Old Sep 20, 2025 | 07:45 PM
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Paul's Formula always stuck in my mind.... Pro Flo, truck manifolds, factory water pump. So simple and going 4.9-5.0's 10 years ago.
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Old Sep 20, 2025 | 07:49 PM
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Yep. And the color was perfect.
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Old Sep 20, 2025 | 09:47 PM
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Yep, he actually ran two Formulas, one gray and one white (or silver can't remember). Seen him a couple years ago at LS Fest.
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