V8 Radiator vs. Stock Rad Feedback

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Yeah fiberglass is the way to go for some folks The above looks very nice. I don't have a preference, but fiberglass is very durable....many OEM's use that as well.
 
Don't think you said what type of fan and fan clutch you have.

The normal way in which a GM fan clutch works is that when cold (engine off) the fan would spin with some minor resistance. When fully warmed up the (engine off) fan should be fairly hard to turn by hand.

Thats kind of the same thing I've heard. I've got some sort of 5 blade metal fan, and a Hayes HD fan clutch.
I gotta R&R an OEM FC next time I go in there and go with the 8 blade plastic fan.
 
Thread resurrection!

Looking at these radiators posted earlier in the thread

Land Cruiser (81-90) Aluminum Radiator

Anyone have a long term update on their experience? Also looks like they have a 3 core option but not a 4 core. Does anyone know of a 4 core that would be a direct bolt on?
 
I would doubt their claim that two rows of 5/8" cores would reliably cool 400 hp, I don't care what material is, unless they did their testing
in a Duluth winter. Most performance Aluminum cores use two 1" cores. There are even higher performance ones that use two 1 1/4" cores
Two 5/8" core carry little more volume as a single 1" core. Ron Davis rates a 28 x 19 two core ( 1" cores ) at 350 hp which hss a little larger
core than the stock 60. They make a direct bolt in for the 60 with two 1" cores but it is spendy. Depending how much money you have in your motor it may or may be something to consider. I know for certain if they are trying to imply on the site that a single 50.00 16" electric
will cool your V-8, they're nutty. I haven't seen an honest 3500cfm 50 fan yet. look at their amp draw if the ratings seem suspect.
CFM requires HP. An honest 3500cfm will draw 55~65 amps at 12v. If you see a 2500 cfm fan with a 10 amp circuit it's a lie
 
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