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2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Im talking about the gap under the radiator support the will allow the cold air to go around the radiator and not through it. That chamber has to be sealed
Im talking about the gap under the radiator support the will allow the cold air to go around the radiator and not through it. That chamber has to be sealed
But why? The OP's question and photos were in regards to the gap between the rad and crossmember normally covered by the factory shroud due to the factory mechanical fan being located on the front of the engine.
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
It appeared to me he was asking about the gap under the radiator support that you can see into the front air compartment in front of the radiator. I cant imagine he would be concerned about what is behind the radiator since the whole engine compartment is open underneath.
My question was about the area directly behind the radiator which will now be open with the stock shroud removed.
My concern was about the open space either creating turbulence or a vacuum which could disturb the air being pushed through the radiator at speed.
Especially with the front air dam extending directly below and in front of this open space.
Other’s have commented that at high speed this condition will allow more air to be pulled up under the hood and trapped, which at high speed will contribute to lightening the front end.
I’m not too concerned about this condition because I will be running an open hood vent on top of my tall L88 hood and the rear of the hood will be unrestricted at the windshield,
The high speeds they were referring to will be well above where I will be operating my 73.
I have also removed all restrictions blocking airflow to the side fender vents by swapping to a Vintage Air ac system, removing the charcoal canister and the windshield washer reservoir.
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
I would be less concerned about that area and more concerned about the seals in front of the radiator. If you dont want your front end lifting , dont latch the hood but I doubt you will getting to any speed that it will be an issue
if you are going fast enough fly, get an airplane. you can get many cars off the ground with enough throttle. landing? it will land itself. wherever and however it pleases...
My question was about the area directly behind the radiator which will now be open with the stock shroud removed.
My concern was about the open space either creating turbulence or a vacuum which could disturb the air being pushed through the radiator at speed.
Especially with the front air dam extending directly below and in front of this open space.
Other’s have commented that at high speed this condition will allow more air to be pulled up under the hood and trapped, which at high speed will contribute to lightening the front end.
I’m not too concerned about this condition because I will be running an open hood vent on top of my tall L88 hood and the rear of the hood will be unrestricted at the windshield,
The high speeds they were referring to will be well above where I will be operating my 73.
I have also removed all restrictions blocking airflow to the side fender vents by swapping to a Vintage Air ac system, removing the charcoal canister and the windshield washer reservoir.
that's a good point.. so my flapper door slams shut when OEM electric fan on.... is it supposed to let air through at speed? seems like a lot of work to include this flapper? it also has a metal strip that may force it open at speed as well.. it is counterweighted neutral with no airflow.
I would be less concerned about that area and more concerned about the seals in front of the radiator. If you dont want your front end lifting , dont latch the hood but I doubt you will getting to any speed that it will be an issue
All the radiator seals will be installed so all the air in front of the radiator will be forced through.
I won’t need any latches and I’m not concerned about my hood lifting.
that's a good point.. so my flapper door slams shut when OEM electric fan on.... is it supposed to let air through at speed? seems like a lot of work to include this flapper? it also has a metal strip that may force it open at speed as well.. it is counterweighted neutral with no airflow.
Yes those flappers in the shroud should be forced open at speed allowing air to flow through.
If you haven’t checked out DeWitts new fan shrouds, look at their web site.
If I had the money I would upgrade to their fan shroud with the flappers.
