The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - a new heater core = huge heat but it didnt fit well

**passthebuck** · 07-25-2004, 11:26 PM

Hey all. I changed the heater core in my red 67 today & the core I got from the parts place was 1/4" thinner than factory. The instructions for the new one said that you may have to use foam &/or adjust the brackets & they also say that the 2" core is more efficient that the 2 1/4" old one. I used two pieces of blue house insulation foam to shim it up. It throws MEGA heat now.

I've seen this post here before but I cant find it now via the search method. What did you all do to solve this problem? Could a guy get his old heater core recored OR are proper brackets availible for the 2" core?

07-25-2004, 11:26 PM	#1
passthebuck Sisyphus was my mentor! Join Date: Sep 2002 Location: Carleton Place, Ontario CANADA Posts: 984	a new heater core = huge heat but it didnt fit well - why? Hey all. I changed the heater core in my red 67 today & the core I got from the parts place was 1/4" thinner than factory. The instructions for the new one said that you may have to use foam &/or adjust the brackets & they also say that the 2" core is more efficient that the 2 1/4" old one. I used two pieces of blue house insulation foam to shim it up. It throws MEGA heat now. I've seen this post here before but I cant find it now via the search method. What did you all do to solve this problem? Could a guy get his old heater core recored OR are proper brackets availible for the 2" core? __________________ passthebuck #5642 -TWO 1967 GMC 910's. One with L6/3-on-the tree and the other with 355 w/435hp & a 700r4. -a 2013 Honda Civic as my "sensible" car