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I have one of these: https://m.summitracing.com/parts/SPU-IX-30102049, and in conjunction with a good alloy radiator, and with all foam seals between rad and support in place, it cools my very healthy stroker sbc just fine. Even in traffic in 44C (111F) weather. No shroud either, just the fan mounted close against the core (not through the core though, don't do that!). I'd probably go for more cfm if you're running a standard radiator though.
I have one of these: https://m.summitracing.com/parts/SPU-IX-30102049, and in conjunction with a good alloy radiator, and with all foam seals between rad and support in place, it cools my very healthy stroker sbc just fine. Even in traffic in 44C (111F) weather. No shroud either, just the fan mounted close against the core (not through the core though, don't do that!). I'd probably go for more cfm if you're running a standard radiator though.
The shroud is the ring or frame around the fan, that circle is all the air being pulled through...so that appears to be all you need
I think you are right! I've neglected the car too long
I read that a E-fan loses about 15% efficiency pulling air thru the radiator. So, I had two 1200CFM fans from my street truck days. I added them as pusher-fans on a delay-relay.
now it's like a Florida hurricane under the hood.
Last edited by doorgunner; May 3, 2017 at 02:56 AM.