[94bird]

Are the fans in series in our LT1 engines? Can I remove one of them and still have one working fan? I'm in the middle of doing a few things on the car and the engine isn't running so I'm hoping someone knows before I reinstall everything.

[94bird]

I measured the size of my plastic deflector that directs the air from under the car into the radiator. It was 32"x4" in size. However, at least 1" of this vertically is actually behind my front fascia and is thus not in direct contact with the frontal air flow so I redid the area to 32"x3". Here's the calculations I get for air flow that hits this barrier at various speeds.

MPH miles/min ft/min cfm
10 0.17 880 587
20 0.33 1760 1173
30 0.50 2640 1760
40 0.67 3520 2347
50 0.83 4400 2933
60 1.00 5280 3520
70 1.17 6160 4107
80 1.33 7040 4693
90 1.50 7920 5280
100 1.67 8800 5867
110 1.83 9680 6453
120 2.00 10560 7040
130 2.17 11440 7627

I think it's fair to assume barely more than half that actually makes it's way through the radiator given the restriction across it, the sharp bend the air flow has to make to enter the radiator and the fans/shrouds behind it, as well as the restriction under the hood in getting air flow out. If that's the case, 2 of the 16" Hayden fans at 1600 cfm a piece would equal the air flow across the radiator up to about 100 MPH. The stock fan diameters are only about 12" BTW.

I've started asking some friends who work at GM to see if they can find the flow ratings of our stock fans for both '94 and '96 model years. We'll see if I get lucky.

Randy, with your front breather setup, what's your frontal area for the scoop?