Darren P

iTrader: (1)

I have the APS twin kit on my car, along with a 403 cid LS2 engine and stock cooling system, I am using water and water wetter in the cooling system, I was using the Dex-Cool with water wetter and in hot weather I can't run the A/C or the car will overheat quickly. I am open for ideas and suggestions. Thanks

BadgeZ28

iTrader: (28)

LT1 F-Body radiator is about 1/3 more cooling capacity, but you are probably generating enough heat to go with an aftermarket large tube radiator.

needadvice

Can you run the A/C while you are cruising on the highway at cruise speeds and stay cool?

Does it only happen during city driving?

ls2 bait

iTrader: (11)

have you tried to bleed the system again? possibly an air bubble thats just getting amplified when more demand is put on the cooling system?

barnat

iTrader: (59)

I went with a Evans coolant & water pump which should have been enough!! but i went the extra mile with the Be Cool racing rad and fan kit!! I didnt think the stock cooling was enough even before i started my build !!at least check into a pump and coolant first!!

Big Bird WS6

iTrader: (9)

barnat you got pics of the rad and fan kit, and price you paid

52172

iTrader: (2)

Might have to go with a different radiator. Might want to try running pure water in the summer time it has way better heat transfer than dexcool.

Pinky93

Be Cool or Griffin are excellent aftermarket radiators and dissipate heat better than the stockers.....
What thermostat are you running? Did you check it? It could be stuck.

qqwqeqwrqwqtq

Do you have an underdrive pulley? May not be enough water flow at idle/low rpm. For a test try holding rpm at 1200 instead of idle and see if the temps start to drop.

MY99TAWS6

iTrader: (3)

I assume 160 stat and set your fans to come on at much lower than stock settings or on anytime you ignition is on might help. Make sure nothing is up there like a grocery bag. I got one up there once and couldn't figure why car would overheat.Just a stupid grocery bag.
You might need a better rad just wondering which ones will fit like stock with the aps kit. Are the griffins or whatever exact same size as stock or are they thicker and if so is this a problem.
One temp trick is to turn the heater on it can save a boilover. And stuck thermostat definitely can cause problems.

EPP

iTrader: (22)

The Ron Davis radiators are some of the best, we have had great success with them.
http://www.exoticperformanceplus.com...html?item=1228 Bob

Pinky93

Another thing is to verify ignition timing, but I am sure you are ok there with a computer controlled car......

sslateron

Switch to STS Turbo system.

Pinky93

Don't say that, I just bought the APS kit!!!

ddnspider

iTrader: (26)

and for the same price you can get a nice turbo or hot parts setup

helicoil

iTrader: (104)

I was leaning this way hard, sitting back following along....... I think I ran across a couple threads about running warm in the past with A/C. One reason I didn't pull the trigger.

Darren P

iTrader: (1)

I do have a underdrive pully but it runs hot on the highway and setting still.

Darren P

iTrader: (1)

I ran all the air out of it. I have added a little water to top it off but it is full. Is there another way to bleed it other than filling it up and bringing it to operating temp and addding water till it is full?

Darren P

iTrader: (1)

I can't run the A/C at all highway or setting still. With the heat on wide open on Saturday (98*day) it would stay between 205 and 212 turn the heat off and it went to 220 with the AC, forget it.

Darren P

iTrader: (1)

160 T-stat and fans come on at 165. There is not anything blocking the airflow other than the intercooler.