big mouth air dam for C4 on ebay $169.99

[Nelson84]

I was thinking on getting this air dam for both of my C4 vettes. Scooping in air to feed the CFI and the TPI. In theory it looks like a good idea. The only negative I see is scooping in water going through puddles or if it doesn't bolt on that good? Do any of you C4 owners have one of these things? My C4 vettes need all the help they can get.

 

[Keith Tedford]

I bought a Vararam from Colin and Manny's guys installed it. It would take a fair depth of water to get into the scoop. That really isn't a concern for me. You would have to go into 4X4 territory to do damage. Guys on the internet seem to be getting two tenths plus improvement in quarter mile times and that is a lot. I'd have to see it myself to actually believe it. That seems to be a lot just for an intake change. Whatever, it works fine and sounds good.

 

[Nelson84]

I bought a Vararam from Colin and Manny's guys installed it. It would take a fair depth of water to get into the scoop. That really isn't a concern for me. You would have to go into 4X4 territory to do damage. Guys on the internet seem to be getting two tenths plus improvement in quarter mile times and that is a lot. I'd have to see it myself to actually believe it. That seems to be a lot just for an intake change. Whatever, it works fine and sounds good.

2 tenths is 20 hp!

 

[Range]

Puddles? WTF is a puddle? Only water my Vette sees is from a hose.

 

[Nelson84]

Think I will order 1 for each Vette.

 

[Bearly Flying]

I have one on my 91 ZR-1, seems to help the cooling. Don't know if there was any performance gain.

 

[Nelson84]

I think it looks cool.

 

[Rruuff Day]

If you aren't looking for a performance boost and just want to run cooler Nelson, the air dam will help but it's not a ram air by a long shot. Some cold air units around but I don't think anyone builds an actual forced (ram) air for the C4.

 

[Nelson84]

I just figure it looks cool and a cooler running engine will give you a little more power.

What is the difference in 1/4 mile between a hot running c4 and a cooled down c4

 

[Rruuff Day]

good point.

 

[vintageracer]

I think I have read that a hot engine generally runs best and is most efficient, but the air going into it is better to be cold as it is denser (if that is a word).

 

[Nelson84]

Why do people put ice on an engine between 1/4 mile runs?

 

[Rruuff Day]

I think I have read that a hot engine generally runs best and is most efficient, but the air going into it is better to be cold as it is denser (if that is a word).

Did a little research vr. You are correct. The ice on the track is typically applied to the intake manifold to supercool it for the next run. This in turn cools the air as it enters the combustion chamber for a more dense intake charge. Denser air equals more fuel in the mix.. Supercooling the rad with dry ice is also popular if your intake draws it's air from behind the fan in the engine compartment. They estimate about 1 hp per 30 degrees of intake air temperature drop so a lot of effort for a mediocre gain. .. Better results in shedding excess weight. Not sure if it's accurate but survey says.... 1/10 of a second 1/4 mile gain per 100 pound of weight loss. All that being said though... a cooler running engine for everyday driving certainly can't hurt either....