The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 12-22-2008, 11:01 AM   #1
1969K10
Senior Member
 
1969K10's Avatar
 
Join Date: Jul 2004
Location: Clarks Hill, Indiana
Posts: 733
Heater core air flow

Can anyone tell me where the heater core gets fresh air to heat my cab?

My truck has sat most of the last year +, and I don't have the heat capacity I used to. I'm guessing the air flow is clogged with leaves...

THX
__________________
1969 K10 - V8, 465, 205, 12 bolt, D44 2002-current
1969 K20 - V8, 465, 221, Eaton, D44 2012-current
Nothin' but drums on all 4 corners!

past horses in the stable
72 C10-short step (97-02), 68 C10-long fleet (06-12)
1969K10 is offline   Reply With Quote
Old 12-22-2008, 11:38 AM   #2
Sport/Truck
Sierra Grande Club
 
Sport/Truck's Avatar
 
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
Re: Heater core air flow

Quote:
Originally Posted by 1969K10 View Post
Can anyone tell me where the heater core gets fresh air to heat my cab?

My truck has sat most of the last year +, and I don't have the heat capacity I used to. I'm guessing the air flow is clogged with leaves...

THX
My guess it has a mouse nest in it. I think it gets its air from the cowl & yes leaves can get in there too.
s/t
__________________
1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.
Sport/Truck is offline   Reply With Quote
Old 12-22-2008, 01:09 PM   #3
smoked68
Registered User
 
smoked68's Avatar
 
Join Date: Oct 2006
Location: Rock Hill, SC
Posts: 421
Re: Heater core air flow

Yep clean all that crap outta there and you'll be good as new. I took the cover off the heater core under the hood and a shop vac/leaf blower. Messy but none the less effective. Good luck. Mike...
__________________
1968 chevy shortbed, Dark Shadow Gray
4 bolt 383 Stroker,Weiand Super Charger, disc brakes, 9 inch, 391 gear, 20" Eagle wheels, muncie 4 speed/ Hurst shifter, 4/7 drop, Hedman midlengths, 3 inch exhaust w/ 2 chamber flows. 1966 Mustang with 306 roller, c-4, 9 inch Detroit locker rear. 1965 Fastback Mustang w/347 stroker, top loader 4spd, 9 inch detroit locker. 1966 Mustang coup, 306 roller, c4, 9 inch. 65 Cobra, 427, T6oo, 9inch, of course. First gen Hayabusa, airbox mod and running 2 exhaust cams.. Zoom Zoom Zoom
smoked68 is offline   Reply With Quote
Old 12-22-2008, 01:51 PM   #4
ChevLoRay
Old Skool Club
 
ChevLoRay's Avatar
 
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
Re: Heater core air flow

Four screws, as I remember...plus some electrical connections and coolant lines to the heater core.....

Once you get into it, you'll find a lot of opportunties for "stoppage of the air flow". I hope you can find them and clean it out w/o finding other "problems".
__________________
Member Nr. 2770

'96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed.

'69 C-10 SWB; 350/TH400 - in limbo

The older I get, the better I was.
ChevLoRay is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 02:28 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com