I am looking at getting a griffin sportsman 31"x19" radiator. Would this be a good choice for a radiator? WIll this support 450hp?

 

You could probably get away with a stock dimension Aluminum radiator like Modine or Girffin as you mentioned. As long as the rest of the cooling system is up to par it should cool just fine.

 

I have a heavy duty tranny cooler and a derale 16" tornado electric fan which flows like 2100cfm

 

as of now it runs about 215* on a pretty warm day which is around 90* but I am trying to get my water temp to come down to under 200* for fear of warping my aluminum heads.

 

I've got 500 horses and a griffin with a high flow milodon pump. It runs fine. Before the griffin and pump my intake temp was 200. After the swap it was at 170-172. Tested it with a heat gun.

 

Right now summit has them for 179 bucks. But only for a few more days. You will have to make a few mods with it as it is a little tall for the stock supports. Check out this thread for details.https://www.thirdgen.org/techbb2/sho...hreadid=247826

Just a note: If your temp sensor attached to the gauge in the car is near your headers you can count on a 20 degree plus false reading to the gauge. So minus 20 from the reading your getting. Before I swapped to griffin, I had a three core rad with a stock water pump and it cooled fine for my 406.

 

That brings up a good point: Wouldn't it be wise to relocate the gauge temp sending unit to the radiator, assuming a threaded provision is available? my stock 91 Camaro radiator has a plug which could probably be used.
Jim

 

Probably not. What happens when your waterpump fails, or you lose coolant unexpectedly? You're sensor in the radiator will show low temp while your engine is melting.

It WOULD be neat to have an additional temp sensor in the radiator (in my opinion), I just wouldn't move the primary sensor there.