RobbyZ

I am curious if anyone else is having heat issues with their LS3? I upgraded my radiator to Dewitts and put on the larger Z06 oil cooler and my oil temp was getting close to 300 after so I had to pull it off after 10-15 minutes on the track. My water temp was up to 240 as well. The Vararam intake blocks a lot of the radiator and I am not sure if that is a potential issue. Does anyone else have any heat issues with that is using the Vararam on a LS3? Maybe I need a thicker oil or my tune is lean? Thanks in advance to for the feedback.

NemesisC5

Charley Hoyt

What was the air temperature when you were having this issue? And what track?

RobbyZ

The air temp was 90-95 degrees in Phoenix at Wild Horse Pass east track. The event I ran prior I was having similar issues at Inde in Wilcox, AZ and the air temp was 60-70 degrees. I was able to run all 4 sessions though my oil temp was getting up to 280 by the end of the sessions. After Inde in May I put the Dewitts and the Z06 oil cooler in anticipation for the higher temps in Phoenix this summer. I am sure it helped, but I am looking for other reasons why my temps are so high. I spoke with a few other corvette owners during the track days and their temps are much lower. No one I spoke with had a Vararam though.

ErnieN85

There is your answer it is a know issue on road courses

RobbyZ

Thank you for the confirmation Ernie. What are most C6 L3 people using? AirRaid?

ErnieN85

I think most run stock.
I use a Callaway Honker.
The air intake (grill is marginal when blocked)
so it doesn't need blocked.
The Grand sport and Z06 have a larger opening.
That said keeping the intake air temp down will help with HP losses from
timing being pulled because of that

lefrog

Did you check your water pump? What are you running for coolant and do you use water wetter?
Are you using a 160 t-stat?
Is your air dam damaged?
Is the radiator properly sealed?
Hood vented or not?

0Anthony @ LGMotorsports

Its in the VaraRam.....almost the same as if you had a front plate on the car.

It blocks A LOT of the radiator on those cars. Fine for street cars and drag cars but not for a road racer. Even with a bigger radiator in the car you can not get air to it, so it doesn't do to much to help.

You need to go to a different air intake that keeps the air for the radiator and the air for the intake separate so you do not loose the air flow through either system.

Ludeaem

Is this the consensus on the C5 as well? Would assume so but only heard good things about the vararam...even on the track.

0Anthony @ LGMotorsports

VR's for the C5's are different in that they pull through separate parts on the nose not the radiator opening.