[Yan2947]

For everyone looking for radiator options - I still have my 89 911 ls1 with a toy-jet rear radiator. It still works. I have never overheated. I have gone through the thoughts of the front valance radiator setup but when I was done it didn't seem like it was an easy option. I thought that having a simple additional radiator up front would be enough to cool the radiator on long highway rides. The end result was getting a tall 5th gear. I have taken the car to the 1/4 track and never had a problem even on upper 90 degree days. The high rpm on the long road would be the problem and getting the tallest 5th gear dropped the rpm's down to an area that I have never worried about. The LS motors run hot. I do not think there is much of a coolant temp difference between the front radiator options and the rear mounts. At least with the rear mounts you could all test out the theory on your own. Take off the lid and mount a horizontal radiator without much effort like I did and drive it. Mount a good spal fan and you could have your car running in no time. Get your numbers, change a gear or two - you need to do that regardless. Plan on a reallllllly tall first gear and your daily driver/occasional 1/4 car would be perfect. Not sure about a track but 1/4 no problem on hot days. If you drop the rpm you won't overheat. I have the toyjet wing after making my own and trying to retro fit radiators in different wings. The end result was that Clemon (Toyjet) created a decent looking wing after numerous changes. The early wings worked but perhaps didn't look as appealing. Not sure if he is still doing the toyjet wings but his website is still up. My cabin heat setup works perfect too. Its way too simple and cheap for you to try something else. It uses the existing heater ducts with a bullet intercooler on each duct. Simple and works great and works off the existing heating controls. I know renegade stuff works. They are awesome and I used them on everything except the rear radiator. They are a class act and I even visited them in Las Vegas. Class Act period. I just didn't want to cut up the front of my car. Just throwing this out there again.