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Old Jul 22, 2023 | 05:50 PM
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Originally Posted by 01Defense
Yeah, I’m pretty hard on the car in terms of my expectations especially coming from boosted cars. I would like to run another C8 that’s stock, in both the 1/4 and on the hill to see the difference. Maybe one day soon. I have yet to see another at the track.
Stock Z51 C8s are not going to run 120 trap speed in those conditions. But those stock Z51's can ET very well. What happened to your 60ft time?
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Old Jul 28, 2023 | 01:44 PM
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The AFE Track Series air intake system looks pretty good. Anyone install this with any real gains ?

Has anyone made custom tubes from the air box to the side vents ?
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Old Jul 28, 2023 | 02:34 PM
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Originally Posted by bhvrdr
I did a full battery of tests on it I haven't published yet. Did same day control conditions 0-130 testing with datalogging controlling for starting iat.

Also did heat soak testing on stock box and afe doing 0-130 runs then immediately idling the car for 5 minutes.

Bottom line was no increase on intake air temps which is good. I believe there was about a 6 g/s gain over the stock box. Figure a few hp which is what anyone can expect out of any of them
Thanks

This fall when it’s not so hot I’ll be inspecting the rear of the car for ideas for the intake tubes
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Old Jul 28, 2023 | 03:19 PM
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Originally Posted by 123sugey
Thanks

This fall when it’s not so hot I’ll be inspecting the rear of the car for ideas for the intake tubes
I believe that was one of Carlos Rios mods which seemed to worked great.
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Old Jul 28, 2023 | 06:22 PM
  #25  
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Originally Posted by 123sugey
So everyone is looking for info / details of how your C8 is running mid to low tens and … better.

IAT’s …. 😉

IF … someone that has modified the air intake path to the throttle body … can explain what they did and why along with … it worked … 😎 We all are looking for mods that work. I’ll admit I will copy others modifications if they are working. <<< some will say I should do my own homework. It’s all good.
These are the modifications that I did for my car on the intake side. I didn't do these mods to help with the IATs as much as I wanted to make sure the motor wasn't pulling vacuum throughout my passes. The Halltech intake got me thinking last year, and I knew how well the velocity stacks worked on the 6th gen motors so I went and ordered a stack. I took a chance cutting out the air straighteners and was actually hoping it would lean out the AF a little bit by moving more unmetered air. I believe it did but it's been nine months or so since I tested it and I forget what the logs showed. It definitely helped though.


Also, I have a 2020 non Z car and they have these air flaps (on both sides)which I felt were not helping with getting the additional air I needed. I had the wife hold a leaf blower at the inlets and found that by using a zip tie to open them up they increased air flow to the air cleaner.


​​​​​​This may or may not work for your application and I am a drag racer and not a track guy so I'm not sure how much of this helps. It's a poor man's Halltech and some extra air scavenging at the inlets, the Z cars do not have 2 flaps iirc only 1.
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Old Jul 28, 2023 | 08:23 PM
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Originally Posted by 123sugey
The AFE Track Series air intake system looks pretty good. Anyone install this with any real gains ?
Yup, aFe is legit, probably your best overall choice on the C8 with the fewest compromises. Be sure to enlarge the air duct outlets on the body of the car, and you can port the aFe inlets out a bit too.
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Old Jul 28, 2023 | 08:43 PM
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Originally Posted by Snowblind2.0
These are the modifications that I did for my car on the intake side. I didn't do these mods to help with the IATs as much as I wanted to make sure the motor wasn't pulling vacuum throughout my passes. The Halltech intake got me thinking last year, and I knew how well the velocity stacks worked on the 6th gen motors so I went and ordered a stack. I took a chance cutting out the air straighteners and was actually hoping it would lean out the AF a little bit by moving more unmetered air. I believe it did but it's been nine months or so since I tested it and I forget what the logs showed. It definitely helped though.


Also, I have a 2020 non Z car and they have these air flaps (on both sides)which I felt were not helping with getting the additional air I needed. I had the wife hold a leaf blower at the inlets and found that by using a zip tie to open them up they increased air flow to the air cleaner.


​​​​​​This may or may not work for your application and I am a drag racer and not a track guy so I'm not sure how much of this helps. It's a poor man's Halltech and some extra air scavenging at the inlets, the Z cars do not have 2 flaps iirc only 1.
WOW !! That info has been what I’ve been looking for. Thank you
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Old Jul 28, 2023 | 08:47 PM
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Originally Posted by Kracka
Yup, aFe is legit, probably your best overall choice on the C8 with the fewest compromises. Be sure to enlarge the air duct outlets on the body of the car, and you can port the aFe inlets out a bit too.
Read that last week in that post thanks

If you want might want to place your other post in this thread so others know what you are saying.
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Old Jul 28, 2023 | 08:59 PM
  #29  
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Originally Posted by 123sugey
Read that last week in that post thanks

If you want might want to place your other post in this thread so others know what you are saying.
https://www.corvetteforum.com/forums...post1604855275
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Old Aug 1, 2023 | 10:26 PM
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Originally Posted by 123sugey
Has anyone made custom tubes from the air box to the side vents ?
Working on it right now. Car is apart. It will be a shocker in some ways.
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Old Aug 1, 2023 | 10:51 PM
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Originally Posted by SPOHN
Working on it right now. Car is apart. It will be a shocker in some ways.
Awesome !!! Post up what your thoughts are, pics if you can and outcome.

As far as shocker goes …. All is good 😎
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Old Aug 1, 2023 | 11:43 PM
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Originally Posted by 123sugey
Awesome !!! Post up what your thoughts are, pics if you can and outcome.

As far as shocker goes …. All is good 😎
Several months ago I had first started with gutting the whole rear from the shock towers back. Even relocated EVAP. Minus the stock air box portion. As of yesterday even all that is gone. Point of no return obviously. But thought out. The rear is gone completely. Had a machine shop build my first mock up of tubing which I welded to support the bumper and mount the hatch latch system back up ( hope to delete all that with HP Tuners). I have no heat issues. One day of 76 ambient water temps wouldn't get over 170. But oil was at 190. Yes on the track 30 min. session. At 88 ambient was holding 205 water temp for 15 min. then rising to 215 the rest of the session. DCT temps even lower. But I have additional mods there also. Just basics but much improvement. Didn't need data on those aspects.

The rear bumper has been stripped some and whole tag area is vented also. The full plan is to replace the composite rear crash beam to DOM tubing professionally to add more protection, even though it's stout as is. It is solid. It all had to be well thought out with the intentions of going back in. I just didn't want a lot of down time. I really enjoying the car also. This is just the skim of it all.

Intake will be feed with airline ducting to a point of the intake side. Plenty of room to work now. This is probably considered insane. I consider it how it should have been, to an extent. Another debate there. This is just the short of it. There is so much into this than I'd ever want to explain at one time. The intake will have water/ silt control also.

I figured hey, Do as the race teams do or close as you can. I just go that far. That’s my passion. That deep. Makes me happy. Keeps me busy. Motor blows, rebuild it. Incident on track, rebuild go full race if it allows. Always have track insurance so I don’t lose out totally. It’s a great thing. Could I’ve bought a dedicated race car? Sure. Which I’m sure I’m going all out eventually. Crazy, yes. Never been in my right mind.

Don't ask about the front.

Last edited by NoMatter; Aug 2, 2023 at 02:08 AM.
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Old Aug 2, 2023 | 07:51 AM
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^^^ now that’s a guy with a plan and dedication 😎
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Old Aug 2, 2023 | 08:47 AM
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Just a quick snap from the other day.Being I’m constantly looking and examining the car during track events and at home. It makes it so easy to work on anything. Even panel removal which I plan to add quarter turns also.
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Old Aug 2, 2023 | 08:55 AM
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more pictures when you can. I was thinking the exact same thing!
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Old Aug 2, 2023 | 01:59 PM
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Quick pic for those genuinely interested. No need to think too much into it. Just mocking up, figuring, aligning, and sealing.


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Old Aug 2, 2023 | 02:20 PM
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Originally Posted by SPOHN
Quick pic for those genuinely interested. No need to think too much into it. Just mocking up, figuring, aligning, and sealing.


O I’m pretty sure there quite a few of us interested in what your doing thanks 😎
Did you already have that Eventuri intake before deciding on going full out modding the rear ?

Last edited by 123sugey; Aug 2, 2023 at 02:52 PM.
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Old Aug 3, 2023 | 05:20 PM
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This is awesome. I'd like some more info on this setup as well. I thought the eventuri didn't play well with the PTR intake??
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Old Aug 3, 2023 | 05:41 PM
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Originally Posted by 123sugey
O I’m pretty sure there quite a few of us interested in what your doing thanks 😎
Did you already have that Eventuri intake before deciding on going full out modding the rear ?
I did not. I wasn’t to impressed with the Halltech. Not that most intakes or NA mods are that impressive. The Eventuri might inch out on others and it was suitable for adding the 4.5” ducting perfectly while others where still the same shape as stock and didn’t have enough lip to secure ducting not to mention the smooth plastic of other intake. The Eventuri has a longer portion with a lip to help counter slippage and vibration from allowing the ducting to slip off regardless of a clamp. It’s 3lbs lighter and the clearance from the DCT was further away from direct heat. Might add a heat shield right off the DCT to help prolong heat transfer from the bottom of the intake. Yes costly and could been cheaper. Still a nice piece. With a tune coming and E85, we shall see.

Originally Posted by slow goat
This is awesome. I'd like some more info on this setup as well. I thought the eventuri didn't play well with the PTR intake??
In what manner exactly? It does require a different coupling than what comes with it originally. Paragon will be introducing that soon. Other than that should be fine. But I’m sure the Eventuri is a better mod than the PTR mod for mod. Hopefully the combination helps with a tune.But that ship has sailed. Don’t look back.
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Old Aug 3, 2023 | 08:29 PM
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Dumb question, but wanting to learn for the future…I know the LT6 has dual throttle bodies, but is the air filter the same and does it route any different than LT2 with it’s need to ingest more air?
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