Sep 28th, 00, 12:56 PM
BY CHANGING FLEX FAN TO ELECTRIC FAN WILL IT MAKE MY SB CHEVY HAVE MORE POWER I HAVE A 406 WITH DART HEAD AN FLAT TOP PISTON 10:8 COM WITH A SAT NITE CAM LIFT 505 TO 516
HID LIFTER.A LITTLE HELP PLEASE???
Sep 28th, 00, 02:46 PM
Please only post a question once! If someone has an answer they will help. I have deleted 2 posts with the exact same question! Also please turn off your cap lock. It's concedered shouting.
Electric fans don't put a strain on you engine the way a flex fan does... You need to be cautious if you switch, you need the right combinition so your street car doesn't overheat!
Welcome abord. You'll find this site very helpful...
Camaros Limited Nor-Cal (http://camaroslimited.com)
Sep 28th, 00, 04:22 PM
In my DYNO testing, running an electric fan instead of a flex fan resulted in about a 3-4 HP difference. IMO that's not enough to jeopordize yourself with a potential over heating problem. I would keep the flex fan.
[This message has been edited by sr71bb (edited 09-28-2000).]
Mark W. Winning
Sep 29th, 00, 04:38 AM
I run a pretty stout flex fan on mine and decided to do some on track testing. People say that these fans pull air at low rpm and flatten out a bit as the rpm's increase. I went to the track, made two passes with the fan and then two passes without. the difference was 100ths of second. I will say that I am leaving at 4500 rpm, so the fan may be pretty flat already, but I was suprised how little it changed things.
1992 Firebird 355/Six Speed
1991 RS 350 / 700-R4
1987 Toyota Pickup 383 / 500 + HP 10.963 @ 119.95 Slicks / 11.997 @ 114.23 Radials
Sep 29th, 00, 01:10 PM
You'd need exotic laboratory instrumentation and absolutely repeatable test conditions to detect any difference, assuming your flex fan indeed goes flat as it should. Don't bother to change it.
'69 Z28 Fathom Green