70 non a/c heater core replacement

[mz4f0j]

Guys,
I'm getting ready to replace my leaking heater core on my 70 vette.
Does anyone have any tips they would like to share? Thanks

 

[70 LS1]

Guys,
I'm getting ready to replace my leaking heater core on my 70 vette.
Does anyone have any tips they would like to share? Thanks

Make sure you have new gaskets.

 

[LVMYVT76]

Be patient, and seal off your duct connections to force the air thru them and not to behind the dash. You have to take out quite a bit of duct work when its an a/c car, don't know if there is much difference when it's not a/c.