Clutch fan losses

[400hp_76]

I ran the vette at the track before my gear swap at 13.9. That was with the headers uncapped t tops off and you get the picture. with everything hooked up i ran 14.3(gotta love those 3.08 and stock tq converter). At the time i was running two electric fans and a small flex fan. My car would run hot idling around town so i put the shroud back in and put a heavy duty clutch fan in. shortly after that i started with the gear swap and didnt run the car for a while. The first run with the new 4.11s, i had the exhaust hooked up and everything in the car even another person .i ran a 13.9. I was very dissapointed, but i have been thinking about it== i think the clutch fan is suckin a lot of power. And i know that my stock 76 exhaust is lettin those big bad supercomps and dart heads breathe-haha. Anyone have any guesses on the hp loss with a clutch fan and stock pullies. I am thinkin a 20hp gain with the exhaust unhooked, easy. With everything out of the car better electric fans with no clutch fan, pullies and exhaust unhooked im lookin at low 13s

 

[JohnZ]

No, the fan clutch isn't sucking enough power to make any noticeable difference - certainly nowhere near as much as the losses from running a full exhaust system vs. uncappped headers. Fan clutches unlock over 3500 rpm anyway.

 

[sscam69]

Bud if your really pulling those 400 hp you should be well into the twelves.

Dont take off the T-tops, its like turning the car into a catchers mit. It just slows you down. Put them on and close the windows. That might help.