I'm thinking the 5/8" hose should be from the intake and the 3/4" from the water pump like my 327. Every aftermarket fitting I've seen (from Summit and Mr. Gasket anyway) confirm that.
Now I'm just curious as to why my heater core on the Chevelle has the 5/8"
connection on the bottom and the 3/4" connection on the top?
Dale
> > Reading a post on TC concerning heater hose size and
checking my
> > two cars, I'm in a quandary.
> >
> > I have a 67 327 Elky with factory air and a 67 396 SS
without
> factory air.
> >
> > Elky:
> > 5/8" heater hose from intake to bottom bung on heater
box
> > 3/4" heater hose from water pump to top bung on heater
box
> >
> > SS396:
> > 5/8" heater hose from water pump to bottom bung on
heater box
> > 3/4" heater hose from intake to top bung on heater box
> >
> > I've had the 67 SS running this way for any number of
years but I
> > just got the Elky last fall and haven't replaced hoses
yet. It
> > seems the hose sizes and locations are just the opposite
between
> > the two cars. Does the A/C make a difference or is that
one's a
> > small block and one's a big block?
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