Heater core removal

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Dec 4, 2008 | 03:14 PM

70GHH

Thread Starter

Racer

Joined: Jun 2006

Posts: 289

Likes: 40

From: Duxbury MA

Heater core removal

I have a '70 with AC and I am replacing the heater core. I've read all of the threads and I'm making fair progress (I keep running out of beer, though).

I've disconnected the heater hoses and undone the four bolts that hold the heater box in place - three inside, one from the engine side. I loosened the seal but can't seem to get the box to come more than a 1/4 inch away form the fire wall.

Am I missing something?

Dec 4, 2008 | 03:17 PM

Durango_Boy

Team Owner

Joined: Aug 2006

Posts: 24,125

Likes: 15

From: Columbia Missouri

When I took the A/C box out of my '77 I seem to remember more than one engine side bolt. In fact I recall one was a stud but that could have changed between '70 and '77.

Dec 4, 2008 | 03:33 PM

hugie82

Safety Car

Joined: Mar 2007

Posts: 3,652

Likes: 49

From: Bridgewater nj

http://lbfun.com/Corvette/Tech/vettetech.html try this site. I'm preety sure they cover your years for a heater core replacement

Dec 4, 2008 | 04:58 PM

baxsom

Le Mans Master

Joined: Jun 2008

Posts: 5,284

Likes: 235

From: Rockledge FL

i just took mine out
72bb
i had to lift up and then pull out on the top to get the lines from the core to clear the hole in the firewall.

Dec 4, 2008 | 05:43 PM

corvetteload

Melting Slicks

Joined: Aug 2005

Posts: 2,359

Likes: 15

From: Confusion

I believe, in addition to the outside bolts, there is a bolt that needs to be removed from the inside of the car. On my 69 there was one, if looking at the firewall, it was the lowest one on the right side, it was in the lower right corner next to the motor. Put your hand down there and see if you feel the lag point. GOOD LUCK