694spd
Well-Known Member
What size are the heater hoses for a 1969 small block, 1/2"or 3/4"?
Heater hose size?
- Thread starter 694spd
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Marcohotrod
Well-Known Member
or 5/8"? I think 1 hose is either 3/4 or 5/8, and 1 is either 5/8 or 1/2
Just measure the hose bibs. Sometimes a hose is a different size on both ends.
They are different sizes, 1/2 and 5/8".
694spd
Well-Known Member
I assuming that when you measure the bib that you want the diameter of the tube area and not the larger diameter "rib" area, correct?
Correct. The outside diameter of the hose fittings.
lemondana
BlackDart
The 69 should have 5/8 on both hoses.
Realy 5/8 and 3/4
famous bob
mopar misfit
mine are both 5/8" , 440/505" wedge.
694spd
Well-Known Member
That's what I'm thinking. I measured the tubes on the heater core and they are the same diameter and there is no way a 1/2" hose will go on them.
69383valiant
It is what it is...
Mine are both 5/8 on my 69 valiant. Gotta change them today they have pin holes...ugh...
BillGrissom
Well-Known Member
Consider silicone hose, since it should last forever. You can get in black for classic look, or blue or red for bling. I am pondering retro-fitting sections of steel tubing from newer cars since it is lighter and cheaper. Running such long lengths of hose and trying to secure it on the valve cover (as the factory did) seems clumsy.
Believe it or not, the o.e. Corbin Clamps do a better job of sealing the hoses. Unlike common threaded clamps which will pinch and cut into the hosen as you tighten it up, the whole corbin clamp puts equal tension on the hose and does not pinch or cut and is much easier to instal with just a set of corbin pliers. Just a thought to consider. The factory clamps were not a downgrade to save money.
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