Recommendations for more power while staying N/A

[KellTrac]

I am not discounting what Kelltrac has done here, but I would need more data and from more than just one person to drop $700-800 bucks. My car has pulled 51.7 maf counts on stock 18 box and manifold.

I agree with you. However, you should not base your decision on your MAF flow vs what I have shown. That would not make any sense.

@KellTrac Have you done a direct comparison between the GT350 throttle body and your custom 95mm on the GT350 manifold? I'd like to see a back to back airflow and acceleration test of those two on the same manifold...

No I have not. I only did that early on with the stock '16 manifold and GT350 "CAI". I did see an improvement. I think it was equivalent to around 6hp if I recall. I made a post with the data on All Motor Coyote Facebook page.

When looking at the just the dyno charts they do not show a 4 car length difference between the two power wise. ??? ;).

That would reflect at least 30-40 whp difference imo.

I don't have dyno charts on my posts. I tend to agree with you on the 30-40...but I don't use dynos.

I did race a friend after I swapped manifolds. He has a turbo 3V car that I could barely beat with the 18 mani - I put several cars on him with the GT350 manifold. So the hp gains and car length gains may not be 100% accurate, but they are very close.

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[Zinc03svt]

I agree with you. However, you should not base your decision on your MAF flow vs what I have shown. That would not make any sense.



No I have not. I only did that early on with the stock '16 manifold and GT350 "CAI". I did see an improvement. I think it was equivalent to around 6hp if I recall. I made a post with the data on All Motor Coyote Facebook page.



I don't have dyno charts on my posts. I tend to agree with you on the 30-40...but I don't use dynos.

I did race a friend after I swapped manifolds. He has a turbo 3V car that I could barely beat with the 18 mani - I put several cars on him with the GT350 manifold. So the hp gains and car length gains may not be 100% accurate, but they are very close.

Again, love your examples etc. and I know guys want to think they can conjure up some secret “better than everyone else” formula, but one persons data is still not enough to prove that gt350 manifold is going to put 4 cars 50-130 on an 18 manifold. If other people see the same results your a Genius! ;).

 

[KellTrac]

Yup. Thus far Ive conjured up a quicker ET than anyone else I've ever seen with a 2018IM.

Now time to repeat with the 350

 

[TEXAS HEAT]

Well fwiw, I have done a before and after comparison between stock e85r tune vs a LTH header and ported intake manifold acceleration test.

I was .4 of a second faster from 3300-7600rpm (my shift points) in 3rd gear with headers and ported stock intake manifold than I was before the LTH and ported intake. Which is about what I would expect for the mods.

My current best et and mph before headers was 11.597@120mph (4010lbs) Have not been back to track to obtain official times due to COVID-19

My bench racer math tells me that I should see a reduction of roughly 4 tenths making my new runs with all other things equal a 11.197@122-123mph

That seems to be about par for mods on the 2018-19 GT's on a tire.

I can post the logs if anyone wants to scrutinize it...

 

[FruityJudy]

VMP manifold shootout results. How reliable I’m not sure.

So I was just doing a little digging and on another forum it was mentioned that the stock truck manifold used was an 11-14 model year and that the 15-up model years use a different one. Secondly I would love to see that stock truck intake manifold ported

 

[FruityJudy]

So I found a graph from f150forums where they put a ported 2018 truck, 2018 gt, and a ported 2012 truck manifold all on a 2012 f150. Torque on the 2018 truck mani came on much quicker than the 2012 truck mani both peaking aboit the same torque number, but top end was Gt, then 2012 truck, then 2018 truck

 

[Nate_V8]

What gains would you expect from porting the GT350?

 

[WildHorse]

VMP said no difference between 15+ truck vs GT intake manifold. So FWIW, I would put to much stock in their testing, otherwise FORD would have used the exact same intake for both. But they didn't. For a reason.

 

[KellTrac]

What gains would you expect from porting the GT350?

I am not sure. Initially after looking at the intake I made my mind up that porting would not provide benefit.

That said, I do not want to leave any stone unturned - I am going to need every little bit to hit my ET goal.

I ordered a ported GT350 intake from Bret Barber about 20 minutes ago.

Next week I will be doing back to back acceleration and datalogging to see what my results are.

 

[Nate_V8]

I am not sure. Initially after looking at the intake I made my mind up that porting would not provide benefit.

That said, I do not want to leave any stone unturned - I am going to need every little bit to hit my ET goal.

I ordered a ported GT350 intake from Bret Barber about 20 minutes ago.

Next week I will be doing back to back acceleration and datalogging to see what my results are.

I look forward to it. I wonder if it will like an unported CJ.

 

[KellTrac]

I plan to do that testing down the road when I decide to open the engine up. Cams, etc.

Right now I only have my eyes on a 10.5X or better with the GT350 intake and untouched longblock. OEM parts from TB to oilpan.

 

[kevinvan6000]

I plan to do that testing down the road when I decide to open the engine up. Cams, etc.

Right now I only have my eyes on a 10.5X or better with the GT350 intake and untouched longblock. OEM parts from TB to oilpan.

Any chances on testing the Boss intake at all?

 

[Momogt26]

VMP said no difference between 15+ truck vs GT intake manifold. So FWIW, I would put to much stock in their testing, otherwise FORD would have used the exact same intake for both. But they didn't. For a reason.

The difference is the 15- 17 truck intake makes more power and torque up to 6500 rpm after that power difference is minimal. But proper tuning for each intake is essential

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