Increasing intake air flow on a LT5

[onethumb]

Originally Posted by lfalzarano

Buy a SLP claw intake and save your original air filter assembly for originality in the future.


Lou

It seems that the issue at hand is not the intake itself, but the path of air to the intake. I've always thought that these sort of intakes just suck hot engine compartment air it rather than cooler outside air, thus negating any benefit from having a larger filter area and less resistance.

Or am I reading this wrong?

[aafc]

Ok i have been playing with 3 types of air intake systems.
The first one was the A/O Forced Air system,but the inlet to the hose is almost
cut in 1/3 size.
Number two. By using the hole made by the forced air system i made a scoop up to an open air filter lid.
Now my last one is a copy of the "PRO STOCK" system used by NHRA Pro
stock class. I made a tube out of alu hand formed to the stock air bridge(with reinforced insert ) and ready a 4 in 90 deg PVC fitting to witch i connected a cone shaped filter mounted inside the front bumper.
I still have to run tests to see if i have enough air to the motor.

http://www.zr1.net/forum/picture.php...pictureid=3793

http://www.zr1.net/forum/picture.php...pictureid=3789

http://www.zr1.net/forum/picture.php...pictureid=3792


This may not be good for most people,but if you cut a hole into front of your
car. You can try anything.

1990 #2546 white/black
one of a few auto 4l8OE eq ZR-1's
thanks
John

[Ccmano]

I had Vararam’s on both of my C6’s and the affect on engine power was noticeable. My 08’ LS3 achieved 400rwhp with simply the Vararam and a canned tune.

That said I do not believe similar gains can be achieved on an LT5. The air filter system is simply not that restrictive. I use a K&N with an open lid and I remove the water barrier below the filter housing which allows more direct airflow. Still I doubt it makes a big diffence. I haven’t been able to find it but I believe someone did a comparison a few years ago between stock, a K&N, a mod like mine, a claw and possibly even the now discontinued ram air system that fed though a hole in the license plate cutout in the bumper.

As Paul has already said, the big gains are in the plenum/injector housing/head porting and headers.
H

[Ccmano]

Found it... over on Corvette forum. Dyno results included.

https://www.corvetteforum.com/forums...o-results.html

H

[Norwegianmopar]

Originally Posted by onethumb

It seems that the issue at hand is not the intake itself, but the path of air to the intake. I've always thought that these sort of intakes just suck hot engine compartment air it rather than cooler outside air, thus negating any benefit from having a larger filter area and less resistance.

Or am I reading this wrong?

You are reading my question spot on.

Vararam emailed me yesterday and said this about my question about them having any systems for C4 Corvettes:

"Sorry - no - we have looked at them but can't find an effective way to make one."

Knowing there is a bunch of skilled and experienced members in this group I decided to make this thread.

Vis sitert tekst



Sent from my SM-G955F using ZR-1 Net Registry mobile app

[Norwegianmopar]

Originally Posted by Ccmano

I had Vararam’s on both of my C6’s and the affect on engine power was noticeable. My 08’ LS3 achieved 400rwhp with simply the Vararam and a canned tune.

That said I do not believe similar gains can be achieved on an LT5. The air filter system is simply not that restrictive. I use a K&N with an open lid and I remove the water barrier below the filter housing which allows more direct airflow. Still I doubt it makes a big diffence. I haven’t been able to find it but I believe someone did a comparison a few years ago between stock, a K&N, a mod like mine, a claw and possibly even the now discontinued ram air system that fed though a hole in the license plate cutout in the bumper.

As Paul has already said, the big gains are in the plenum/injector housing/head porting and headers.
H

It's not the air filter system that we think is the restrictive part, rather the way the air has to travel to get to the filter box. The duct leading to the filter box is not in a straight line, but kinda S-shaped or zig zagging if you like.

This makes ram air effect hard to get; more cold air in as the speed increases. We believe there has to be a way to achieve this.

Imagine being able to get more cold air in and thus being able to get more fuel burned. Add this to the porting and headers etc in the other end of the power plant. In theory, that should bode for even more power gains than with today's amount of air getting in thru the existing intake system. Agree..?

We all know twin turbos or superchargers can help with this, but not for the same $$$ [emoji16]

Sent from my SM-G955F using ZR-1 Net Registry mobile app

[Norwegianmopar]

Originally Posted by Ccmano

Found it... over on Corvette forum. Dyno results included.

https://www.corvetteforum.com/forums...o-results.html

H

Yes I have read this thread too [emoji106][emoji4]

Sent from my SM-G955F using ZR-1 Net Registry mobile app

[Norwegianmopar]

This is the type of system I would love to have on my Z:

http://www.vararam.com/b2.html

Sent from my SM-G955F using ZR-1 Net Registry mobile app

[efnfast]

I would think some way to measure vacuum at the horn would tell you if there was enough restriction to matter.

[DRM500RUBYZR-1]

Originally Posted by Norwegianmopar

This is the type of system I would love to have on my Z:

http://www.vararam.com/b2.html

Sent from my SM-G955F using ZR-1 Net Registry mobile app

40 Horsepower add?


Marty