SLP - LS1 radiator???
Find out from SDCE what their total cfm is compared to the ATI unit and a single SPAL Extreme (3000) or a SPAL 16 Extreme and SPAL 9 inch like mine with a total of 3740 cfm. You will want at least the same amount of CFM from the SDCE kit as the stock dual 11 fans that I recall reading somewhere is about 2250 cfm.
I cut an additional nine inch hole on the driver side of the ATI shroud and mounted a Spal 9 inch puller (pn 30102061). I also replaced the ATI 16 inch with the Spal Extreme puller fan (pn 3012113).
After the installation of the Spal fans I purposely let the car sit in the hot sun (95 degrees) and idle with the AC on and it would not go over 185 after I installed the two fans. I can't get it to overheat after a hard pull on boost either now.
The two Spal fans pull 3700 cfm (3000 cfm for the 16 inch and 740 cfm for the 9 inch). The Spal fan is loud but it pulls much better than the ATI fan.
The Spal extreme bolts right up. You will have to get some rubber insulation to seal the fan to the ATI shroud. I got it at Lowe's. The Spal fan on the Extreme mounts about a 1/4 inch into the ATI shroud, but one-sided stick-on black rubber insulation mounted around the hole will raise the fan just enought so it doesn't extend into the 16 1/2 inch hole of the shroud in addition to making a perfect seal between the fan and the shroud.
The Spal fans wire into the same wires as the stock 11 inch fans. Once installed both fans look just like stock and not a hack job. See pic here:
http://pg.photos.yahoo.com/ph/dlands...ec.jpg&.src=ph
As for cost, the cost for the two SPALS I purchased is nearly the same as the kit price from SDCE plus my sweat and time to cut and measure the hole.
If you decide to do it yourself call Keith at Spal and he will give you a number of a dealer near you.
http://www.spal-usa.com/html/dampframe.htm
Note: I have read that the ATI fan is made by Spal, however the markings on the ATI fan say it is made in the USA. Spal fans are made in Italy.
Keith at Spal said they supply a fan to ATI, but for the Corvette kit.
Last edited by dlandsvZ28; Mar 26, 2006 at 05:35 PM.




