454cid
Sooper Pooper
The 454 fan is a steel hub with 9 aluminum blades. I swapped it out for a later design 11 blade nylon that I think came in 610 Van's and 800 trucks, but also lists the 454, now.
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My buddies has and always has had a 5 bladed fan. I have worked on several TBI, Vortec and 8.1 big blocks with this fan.The 454 fan is a steel hub with 9 aluminum blades. I swapped it out for a later design 11 blade nylon that I think came in 610 Van's and 800 trucks, but also lists the 454, now.
I think the 7 blade I have may have been on a 96 P30 van without air.Now I'm curious. What year was the 6.5 with the 7 bladed fan? Did any of those 5 bladed fans cool adequately? I have owned 3 454 engines and worked on multiple 8.1s and 6.5s and have yet to see a 5 or 7 bladed fan on any of them. I apparently stand corrected.
That being said, replaced the 34x19 radiator with a TYC....
I had two 16" 9n my 97 with stock rad, it did well pulling my camper. We don't get real hot here but it was a tad higher than the stock fan temps. Never overheated tho, if I'd have made a shroud with only holes for fans prolly woulda been better. I pulled it and put stock fan back.I would think 6000 CFM would be enough to keep it cool at idle. I don't have any data but that feels like a high number for a mechanical fan to achieve at that rpm.