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Dyno Results of Gen III 5.3L truck intake Radical Ported by Peak Speed Shop

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Old 08-15-2013, 12:48 PM
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Default Dyno Results of Gen III 5.3L truck intake Radical Ported by Peak Speed Shop

Here are dyno results from Peak Speed Shop's Radical porting of a Gen III GM Truck Intake Manifold.

Stock 2001 GMC Sierra 1500, 5.3L. A tune was done prior to the "before" results to factor out the effects of just tuning the stock setup. Dyno was before/after test on ported intake and throttle body only.

7 Gain in Peak RWHP
6.5 Gain in Peak RWTQ

Gains were seen throughout the power curve with points in the curve seeing as high as:

9.5 Gain in RWHP
9.5 Gain in RWTQ

Intake manifold inside before RADICAL porting. Obstructions cause poor airflow to 4 cylinders.



Intake manifold inside after RADICAL porting. Obstructions cause poor airflow to 4 cylinders.





To order, go to TRUCK - Intake Manifold : Peak Speed Shop, Boosting Horsepower...Adding Style! or call us at 719-651-1952.
Old 08-30-2013, 01:31 PM
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Old 09-18-2013, 02:17 PM
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Default Check out our Online Store!

Go to http://peakspeedshop.com/Zen_Cart/ to check out our new online store.

Order intake manifold porting, throttle body porting, FAST products plus intake parts.

Now, you no longer need to wait while you ship us your parts for porting. Pay a core charge to get the most common LS2, LS3 and LS7 parts from our inventory and be up and running the same day! Core charges are refundable once we receive your cores back. Order online at our new store!

For more information on Peak Speed Shop Services, go to our regular website at http://www.peakspeedshop.com/ . You can access our store from there, too.
Old 10-09-2013, 10:13 PM
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Old 10-24-2013, 10:49 AM
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Default Peak Speed Shop porting process

Peak Speed Shop Porting Process

Some have asked about our porting process. Peak Speed Shop uses a three step process for porting intake manifolds and throttle bodies.
First, we use a steel crosscut bur for removing most of the material in key areas and to smooth transitions and ridges for better air flow.

Second, we us sanding rolls for smoothing out the area that had material removed by the crosscut bur.

Last, we using buffing pads to polish the work.
Unlike some businesses that do porting on the side, porting intake manifolds and throttle bodies is our primary business. We have earned a good reputation for quality work and service at competitive prices.

Go to our website at http://www.peakspeedshop.com/ for more information, or call us at 719-651-1952.
Old 11-14-2013, 12:44 PM
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Old 12-09-2013, 05:11 PM
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Old 08-20-2019, 10:07 AM
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From the looks of the graph the ported intake lost alot of power down low. Looks to be over 50+ hp and TQ. Am I looking at this correct?
Old 08-20-2019, 11:29 AM
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Originally Posted by Nick Rutledge
From the looks of the graph the ported intake lost alot of power down low. Looks to be over 50+ hp and TQ. Am I looking at this correct?
This is a 6 year old post.
The dyno was started at a different RPM. Stuffing a rag in the intake probably wouldn't result in a 50 HP loss lol.
Old 08-20-2019, 01:41 PM
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Originally Posted by JoeNova
This is a 6 year old post.
The dyno was started at a different RPM. Stuffing a rag in the intake probably wouldn't result in a 50 HP loss lol.
Who cares if it's a 6 year old post. Do they not still sell this service? Yup pretty sure they do so this post is still relevant. Just trying to understand what I'm looking at. Like I said there is clearly a huge loss down low.
Old 08-22-2019, 01:39 PM
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Originally Posted by Nick Rutledge
Who cares if it's a 6 year old post. Do they not still sell this service? Yup pretty sure they do so this post is still relevant. Just trying to understand what I'm looking at. Like I said there is clearly a huge loss down low.

It should be obvious that what you are seeing is how and when they rolled into WOT on the dyno. As soon as both pulls were under full power the ported manifold was higher across the entire curve
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Old 08-22-2019, 08:12 PM
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Originally Posted by Nick Rutledge
Who cares if it's a 6 year old post. Do they not still sell this service? Yup pretty sure they do so this post is still relevant. Just trying to understand what I'm looking at. Like I said there is clearly a huge loss down low.
There will ALWAYS be a huge loss of power when the THROTTLE ISN'T OPEN YET.
Old 08-22-2019, 08:43 PM
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So whats better, a ported gen III 5.3L truck intake or a tbss intake?
Old 08-23-2019, 08:45 AM
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Why is the article for Gen 3 intake and the pictures are of a gen 4 intake?
Old 08-23-2019, 09:51 AM
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Originally Posted by JoeNova
Why is the article for Gen 3 intake and the pictures are of a gen 4 intake?
Expert editing.....



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