PZZATHG

I have a procharged C5 and live in Phoenix. Currently only have 1 fan due to the kit I have. In the summers the car runs hot as hell. My question is what kind of hood would help keep my coolant temps down, a vented hood or a cowl induction hood. Not doing this for cosmetic reasons looking to run a little cooler yet have the hood hold up at 150mph+ (1/2mile). I have been scouring the internet but having hard time finding which hood cools better in stop and go traffic.

realcanuk

Don't think any hood helps in traffic. I know I added a vent and the only noticeable difference is it cools down quicker once you start moving.

PZZATHG

So extractor hoods or cowl induction only works when the vehicle is in motion?

Quickshift_C5

It will work either way. The heat has a place to escape even when sitting still in traffic. However, it would be FAR more efficient when moving.

toycloser

Investing in a dual fan kit might be money better spent.

corvettebob1

Kill 2 birds with one stone, ditch the old Procharger intake and lower the radiator and go over the top with the intake and reinstall the factory dual fan setup. You will run cooler and gain ~40rwhp.

neverstop

i really like the trackspec vents. been ~175mph in the 1/2 mile and it improved front end stability noticeably. previously with no vent i could see the hood bulge a little at >170mph (in the 1/2 mile at the track) and with the vents not anymore.

cooling was about as Canuk stated. helps cool it down a lot once moving and runs maybe 8* cooler at speed but no real big difference once stuck in traffic for long periods of time. but if you come to a stop colder it helps overall. i have no data to support this yet since hard to measure IATs at WOT with methanol on an apples/apples basis over time, but if air flow is moving better thorugh the radiator to make it run colder at speed it must be improving air flow through intercooler too? i think it looks awesome too and it was cheap and easy. I recommend it as every bit helps but it's not a game changer on its own

Cordes Performance Racing

what's killing your car man is the older style kit and the single fan. If you convert to the newer setup you can do a traditional dual fan setup and it will be perfect. All the blower guys we do have zero overheating issues.

trayack

I decided to try the ZL1 hood vent that a lot of the FI C6 guys have been using for Drag Week this year. I never had an issue with temps before but I figured it couldn't hurt on the long heat soaked drives. I can honestly say that this hood vent lowered my cruise temps by a full 10 degrees, and after sitting in traffic it also cooled off much faster once you got moving again.

During long stints in traffic (10 mins stationary at construction) during a 300 miles drive in 90 degree weather the car did get up to 217 once. Yes I know this isn't "hot" for a vette, but I'd rather catch it then before it goes past the point of coming back. My simple solution....open the hood and keep moving. With the cutouts for the headlights in the hood there's actually a fair amount of visibility

Plus, it was hysterical to see the faces of the other people in traffic...








- Travis

PZZATHG

thats on my list Joe! I'm switching over to E85 tomorrow. In the next month or so I am going to Lower the radiator, get that second fan back in there and ditch the cobra style intake. I will be calling you for a hard pipe and filter soon. Hope all is well buddy.

PZZATHG

thats on my list Joe! I'm switching over to E85 tomorrow. In the next month or so I am going to Lower the radiator, get that second fan back in there and ditch the cobra style intake. I will be calling you for a hard pipe and filter soon. Hope all is well buddy.

StatmanRN

[QUOTE=trayack;1594153976]I decided to try the ZL1 hood vent that a lot of the FI C6 guys have been using for Drag Week

Where did you get that? Looks trick.
Might be an issue for me in Fl with all the rain though

StatmanRN

A while back, got into a disagreement with someone on here who had been an engineer on the C5 regarding aerodynamics and cooling.
I was discussing how I found that poping the hood in traffic, and at highway speeds, seemed to help cooling [which now that I have an aluminum radiator isnt an issue.
his contention is that the high pressure air of the cowl induction hood would actually hurt cooling.
My own experiance in other cars was the cowl hods defintily helped cooling in traffic

ysb02

You could test this by just plugging the cowl gap in the back so it doesn't vent and seeing what the temps are versus it open.

junk c5

I'm using a tracspec vent and it did lower my under hood and engine temperature. They also sell smaller side hood vents that I may invest in next. I'd like my temps as low as possible. If possible sub 200* peak.

junk c5

Something like that.

toycloser

I'll sell you this hood for $24.5k and it will come with a car!

neverstop

on my c6 removing the weather stripping at the back of the hood helped with cooling when moving a small but noticable amount for sure