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As for the cold air intake part I think this pic another member posted about an hour ago in another thread shows how the air gets in. Looks like a cold air intake to me.
That doesn't look like the air box in my '92 LT1 (same make and model Tom has). I'd post a pic of my air box, but my camera is screwed up right now. My box is a sealed box with openings on the top of it. I just don't see how ambient air can get to the opening of my air filter box while it is under the hood of my car. This the the air box on Tom's and my Vettes-
Last edited by 1stVetteFinally; Jun 1, 2016 at 06:17 AM.
I have that induction system on my '85. I don't think it does anything.
Most of the aftermarket parts do nothing. The engineers at GM weren't stupid.
The one thing that did make a huge difference on my car was installing an aluminum flywheel. I really love that. Coming out of a corner it simply revs up. I had to change all of my shift points at Sebring.
[QUOTE=crowz;1592330206]As for the cold air intake part I think this pic another member posted about an hour ago in another thread shows how the air gets in. Looks like a cold air intake to me.
Originally Posted by
Tom400CFI;1592308563
The stock intake is not a COLD air intake. It's a hot air intake. It draws hot, under hood air, from inside the semi sealed, "under hood" area.
Last edited by bow tie guy; Jun 1, 2016 at 11:47 AM.
Well if the image is from a c6 car then it cant be applied to the c4.
Exactly. Still, it didn't stop you and bow tie from trying to beat me over the head w/it. I pointed out that we didn't know the details of the image. We didn't. That didn't matter...more insults ensued. Once again, we're reminded of the value in fact finding.
Originally Posted by Amotoxracer
So what is it your planning tom ? Are you going to put a thermometer in the air box somehow ? That would be pretty conclusive, although I tend to believe the IAT sensor data.
Well...again, Aardwolf posted his, I posted mine and the data differed...but so do our cars. You guys didn't acknowledge my data...."conclusive" as you now claim it is, right?
I agree with you that the IAT reading pretty much tell the story. What I seek at this point, is understanding of hot and cold air movement under the hood. If I put my probe at the filter opening, and get ambient air, then I should be able to move the probe and understand air movement under the hood -and how the filter is getting "cold air" when it's in the under hood area, which I don't believe is cold. This is not mine, mine is cleaner, but it is the same as the tool I'll be using:
...and in the top of this image, w/the yellow plug is the temp probe...
Last edited by Tom400CFI; Jun 1, 2016 at 11:14 PM.
regarding the photo the C4 C5 & C6 all use similar bridged style intakes
Lets try and stay on point, This was never about you & your 92 LT1 car
The original post was in regard to an 89 model, and as I expalined way back befor your matter of fact condescending posts
with size 7 fonts, the thumbs up, and laughing smileys
I pointed out to you that the 89 and 91 left the factory with what most would describe as one that draws fresh air from under the bumper like the C5 and C6
Amotoxracer suggested all GM EFI cars in fact draw fresh air from outside the
I like it too. It works on you, just as well as you think it does, on me.
Originally Posted by bow tie guy
the FACTS Tom
regarding the photo the C4 C5 & C6 all use similar bridged style intakes
I've owned a C6...and a C4. At the same time. I'm pretty familiar w/both. You need to know your "facts" before you claim what "facts" are. Although the C5/6 have similar air bridges, they have completely different front facias with completely different air management in the front of car. Just look at the image! Not like a C4. But your'e right that the air induction package is similar and I'd say the same of the C6 (wait, I DID say that about the C6, when I had one!), that it is a "hot air intake". Here are some pics of the C6 -just like mine- with the filter housing removed. Tell us; where is the "cold air from under the bumper" coming from, to get to the filter?
Please point to where the "cold air" is entering that filter housing area. Also note that the C6 even has a gasket sealing the hood to top of bumper! ^Those pics come from THIS ARTICLE where they are literally showing us how to modify a C6 into a true, cold air intake system by cutting the shroud and running intake ducting through that shroud.
Originally Posted by bow tie guy
The original post was in regard to an 89 model, and as I expalined way back befor your matter of fact condescending posts
with size 7 fonts, the thumbs up, and laughing smileys
Who's used more fonts in this thread, and continues to do so? You do. I asked a question in my "size 7 fonts"...you never bothered to to answer. It was "large" so you wouldn't miss it. At any rate, I'm fairly confident that the 89 and '92 cooling/intake package is functionally the same. It's awesome that you call me out for condescending posts. Every post of yours in this thread is condescending -even when lacking fact, data and correct information (like the car in the image, for example). Yikes.
Originally Posted by bow tie guy
I pointed out to you that the 89 and 91 left the factory with what most would describe as one that draws fresh air from under the bumper like the C5 and C6
C5/6 don't draw cold air from under the bumper for the filter. They do for the radiator...not for the filter.
Originally Posted by bow tie guy
[B][I]Amotoxracer suggested all GM EFI cars in fact draw fresh air from outside the
I saw that he suggested that. You might be interested to learn that he has also suggested that all oil in a SBC over 10 PSI is dumped back to pan, that a late C4 has a "push style" clutch and that gravity bleeding brakes doesn't work. I certainly hope that you're not going to use a comment from him, to "prove me wrong" in a effort to get your "win". Don't worry about what motoman says...focus on facts, and realize that facts aren't the same as your opinion.
I'm really pretty surprised that you aren't more open to/interested in my proposed testing. If you're so confident, then my test will only "prove" you to be right...right? I have no issue w/that...I don't see why you would either.
Last edited by Tom400CFI; Jun 2, 2016 at 01:14 AM.
The air filter on my 86 would freeze over a few times each year. So the air wasn't going through the radiator on that particular car. Not to mention the debris it would suck up off the highway and my driveway would never get past the radiator if it did draw after it.
Im not sure if there is a difference between the 86 and the 89 in question. Heck I don't even know for sure how my 87 is routed since I haven't even changed the filter on it yet.
I won Tom when I told you for the second time, that this isn't about you and your 92 LT1 with the Hot air intake, from under the semi sealed hot under hood area
And For the Record Tom, Amotoxracer is straight up 100% accurate in His comments regarding GM EFI cars drawing fresh air much the same way for decades
As for all gm vehicles having a real cold air intake. Nope there are some setups that flat suck. Some draw air from the fender area and then have the fender open to the engine compartment only. Not so great.
Some just have a pipe that goes straight downward after the air box.
So in some cases an aftermarket cold air intake is actually useful.
I saw that he suggested that. You might be interested to learn that he has also suggested that all oil in a SBC over 10 PSI is dumped back to pan, that a late C4 has a "push style" clutch and that gravity bleeding brakes doesn't work. .
That's nonsense tom and you know it. You took 10% of the meaning and twisted it into nonsense. No wonder you have such a hard time around here.
Last edited by PatternDayTrader; Jun 2, 2016 at 08:30 AM.
As for all gm vehicles having a real cold air intake. Nope there are some setups that flat suck. Some draw air from the fender area and then have the fender open to the engine compartment only. Not so great.
I agree with the intent of this statement. There is a compromise between cold air and ingesting water while driving in rain and through puddles. The pic of the mustang tom posted is a perfect example. You can see the hole in the inner fender right next to the airbox.
Originally Posted by crowz
Some just have a pipe that goes straight downward after the air box.
Its certainly true some are better than others. A true "cold air intake" will never be present on a street car because of the water and road debris issue.
Exactly. Still, it didn't stop you and bow tie from trying to beat me over the head w/it. I pointed out that we didn't know the details of the image. We didn't. That didn't matter...more insults ensued. Once again, we're reminded of the value in fact finding.
No one is attacking you in an unfair way. There is no reason on earth why we wouldn't assume the image in the photo was not for a c4 car since its used in the context of a c4 thread. Now we know better. You shouldn't take offense to that.
Originally Posted by Tom400CFI
I agree with you that the IAT reading pretty much tell the story. What I seek at this point, is understanding of hot and cold air movement under the hood. If I put my probe at the filter opening, and get ambient air, then I should be able to move the probe and understand air movement under the hood -and how the filter is getting "cold air" when it's in the under hood area, which I don't believe is cold.
Ok, that's fair enough. Post your results.
Originally Posted by Tom400CFI
This is not mine, mine is cleaner, but it is the same as the tool I'll be using:
Yep ... I'm very familiar with the temp functions of high end multimeters. Post the results you come up with when your ready. Try to get an impression as to if the cars speed makes much difference.
This thread has gotten way off topic of helping the OP get some performance upgrades.
However, there has been data logged from an early and late C4 that shows the early was the same as ambient and the late was not. This is the only data that I have seen in this thread.
I hope Tom can measure temperatures to show what the later cars have. I have the later style and am interested in the numbers. It would be nice if someone can measure the temperatures in an early car and post those too for comparison.
^What a helpful post! Thanks for the meaningful contribution.
Tom will definitely post his objective data...as Tom typically always does. Haters can hate, stick heads in sand, deflect...what ever. I'll post what I find.
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.
End of story. Keep it civil here gentlemen. Attack ideas, not each other.
