heater core leaking.........grrrr

[cag]

how do i change this thing out, and what is the best one to get??

[78 Big10 454]

I swapped out mine using a heater core I got from NAPA auto parts. This is the video I used to do the swap:

https://www.youtube.com/watch?v=Ec5aIn1MmrY

Allot yourself the time necessary to do this swap. Lay down some towels or rags over the interior carpet, just in case you spill some residual coolant. I took photos step-by-step and labeled and marked everything I could. Clean up everything as you go. It was a solid four hour job. Take your time and take a breather if you get frustrated. Once you complete the job, you'll be surprised how satisfying it was to do it.

[straight6chevyguy]

Is an a/c or none a/c truck?

[franken]

You might be able to fix it. Maybe look at it.

[Dead Parrot]

Here is a forum thread on the subject: http://67-72chevytrucks.com/vboard/s...d.php?t=460942

AC equipped truck although heat only isn't that much different. I have replaced both types.

One thing to watch is that many replacement heater cores are of the "One size fits many" type and may need a bit of gap sealing to get the best air flow performance.

As mentioned above, allot several hours for the task. Take breaks. When finished, check nearby wiring and such to make sure elbows didn't knock something loose while you were reaching for one of those hard to get at nuts.

[old Rusty C10]

I second getting the new core at NAPA seems they are a better quality part

[Loco83]

Living in Cali my heater core started leaking some thirty years ago, at the time I just disconnected the hoses to swap it out at a later date since it was the middle of summer, still wondering when I'll get to it.

[chris989]

Originally Posted by cag

how do i change this thing out, and what is the best one to get??

I bought a aluminum one and it fit so so... bought a copper OEM type and it fit perfect with no movement.

[KQQL IT]

Just did ours in the 91 crew cab.
Did it all from the glovebox.
Except the 2 nuts from under the ac suitcase.
Used an aluminum core works ok so far.