Stock Supercharger ported

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Dec 11, 2014 | 11:43 PM

#51

armcclure

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The inlet was not modified. At all.

Dec 11, 2014 | 11:45 PM

#52

Bluelightning

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Quote:

Originally Posted by Spawne32

I think the point he was making that there is no way to conclusively prove that modifying the outlet improves power when you modify the inlet for a larger throttle body at the same time.

That's fair. A little ridiculous if you think the a stock TB is going to drastically change results but fair if you want to get technical.

Dec 11, 2014 | 11:50 PM

#53

Spawne32

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Quote:

Originally Posted by Bluelightning

That's fair. A little ridiculous if you think the a stock TB is going to drastically change results but fair if you want to get technical.

Well 9 times out of 10 the performance gains from porting a supercharger are always on the inlet side. Smoothing the inlet port helps by increasing velocity into the supercharger. I'm sure zoomer has details on the testing they did to come to the conclusion he posted. Gains were probably minimal at best.

Dec 11, 2014 | 11:55 PM

#54

Bluelightning

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Quote:

Originally Posted by armcclure

The inlet was not modified. At all.

Quote:

Originally Posted by CobaltSS 16

The low graph is my original blower with a 2.6
Inlet opened for ls4 but not polished.
High graph is a blower with this outlet port only, spacer used for ls4 (less than ideal). Same 2.6 pulley.

So is this incorrect info? Or you just mean the blower you modded the outlet on had a stock inlet?

Quote:

Originally Posted by Spawne32

Interesting theory. But they said the inlet port was never smoothed. Just the inlet opened up on blower 1 to match the LS4 and blower 2 was bone stock. Sub'd for outlet only modification with stock TB dyno testing haha

Last edited by Bluelightning; Dec 12, 2014 at 12:12 AM.

Dec 12, 2014 | 12:21 AM

#55

armcclure

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Quote:

Originally Posted by Bluelightning

So is this incorrect info? Or you just mean the blower you modded the outlet on had a stock inlet?

Interesting theory. But they said the inlet port was never smoothed. Just the inlet opened up on blower 1 to match the LS4 and blower 2 was bone stock. Sub'd for outlet only modification with stock TB dyno testing haha

this. The winning blower in the dyno sheet was outlet port ONLY. Zzp tb spacer/adapter to an ls4. The other blower was stock other than being machines out for the ls4 as opposed to a spacer, with the cleanup extending an inch or two into the case.