Custom mechanical fan builder

72bluNblu said

That sounds like a radiator problem. If it was just a fan problem, cruising at speed should lower the temperature significantly.

The other possibility is a water flow issue, but a 1.3:1 pulley ratio should be fine. What water pump is in it? 6 or 8 vane?

If you have the pulley matched to the proper pump an electric pump is just expensive. For a drag only car fine whatever. On the street I’d never use anything other than a mechanical pump.



Who cares? The important thing about a radiator is not how it stands up to a floor jack, it’s how well it cools the car. And the OP is not the first guy to have issues with a really expensive Griffin NOT cooling his car.

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Mine wasnt ''really expensive'' , I bought it off ebay/summit racing for $286 , about 10 yrs ago , and cooling a supposed 761 h.p. , is harder than cooling a small block street car , to start with , especially in a 68 barracuda.
I also bought the shroud from summit over the phone , and have changed its thickness 3 times over the last 10 yrs or so , ''getting a little ugly'' , and I do not have a heating problem , just watching it now , I can always go to an 18'' fan , and back to a non clutch set up if I have to !
I am sold on Griffin radiators myself , hasnt leaked a drop in 10 ish yrs. !
I have only ran across 1 18'' x 2 1/4'' pitch fan , and they want $100 FOR JUST THE BLADES , -AINT HAPPENIN W/ ME !