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#1 |
Registered User
![]() Join Date: Dec 2004
Location: Gypsum Kansas 67448
Posts: 1,681
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how can i get more heat
well,my 72 is not the warmest thing to get into every morning,but its all i got,anyway,i have a 195 thermostat,4-core radiator,new coolant,new heater core,but it does not feel very warm in the cab at all,i think i have my heater core hoses plumbed backwards,would that really that much difference,or is it the fact that i have 2 12 inch cooling fans running,any advice would be great.mike
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21 2500hd duramax 58 apache HILLJOB GRAPHIX--for all your graphic needs My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=542497 LS ENGINE SWAP INFORMATION THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=377348 4l60 to an NP205 http://67-72chevytrucks.com/vboard/s...43#post3697343 Last edited by hilljob26; 01-11-2006 at 08:02 AM. |
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#2 |
Registered User
Join Date: Jan 2004
Location: NH
Posts: 2,266
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Re: how can i get more heat
I am not sure if your fans are running consistantly and they shouldnt be, one of the things you can do during the cool weather is to block off some of the radiator in the front, Take a piece of cardboard the width of the radiator and cut a V-shape/circle/square in it to allow some air like you see the big truckers due during the winter and that should get you some warmer coolant to the heater core, it also doesnt help having the hoses reversed. I have a bit of the same issue in mine, I have a new heater corp & hoses are correct, and I have a big aluminum radiator with a 185 thermastat and it doesnt get very warm inside either during cold days, but for me it's not an issue becasue I don't drive it during the winter.
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1967 C10 - SWBSS Pro Street 427sbc, 700R4 & 4.10 Gears 1948 Chevy FleetMaster Coupe, LS1, (almost done) 1950 Chevy StyleLine Coupe 250/6 3x2 Dueces 2009 Toyota Tundra 1996 Harley RoadKing "I maybe getting old, but I can still burn rubber with the best of them" |
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#3 |
State of Confusion!
![]() ![]() Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,924
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Re: how can i get more heat
The water flow does effect things. How much I am not real sure. I would try running the plumbing in the correct geometry. More than likely your heater core is plugged and your not getting the full effect. Both of mine will melt you out in a very short while. Another thing for nothern climate folks, is our cabs are not insulated worth a s--t, thus the heaters (and AC in south) has to work its butt off to do its job. Having good door seals and extra insualtion in the cab will help.
I'd almost bet in your case though that you have a bad heater core.
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Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! Last edited by Palf70Step; 01-11-2006 at 09:42 AM. |
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#4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: how can i get more heat
flow direction won't fix a thing.
You need to grab the wife's turkey thermomter and shove it down the defroster vent, and see what the air temp is when the truck is fully warmed up. Low air temp; clogged heater core, eithyer internally or ecternally... new ones are cheap. control assembly not letting the temp selector move all the way. Heater 'door' inside box is not working properly, damaged bad seals.. ect. Low coolant temp. If your fans are on all the time, then you need to finish your conversion and get a temp controlled switch in there. your fan motors will not last long being on all the time. High heater air temp....cab still cold; cab corners/floor has holes, letting in bitt loads of heat. Plug the holes with tape or rags ow what ever. Look for holes up on the firewall... like the clutch rod hole. door seals or poorly mounted doors. |
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#5 |
Thats the Hillbilly way
Join Date: Jul 2001
Location: Torrance,Ca
Posts: 5,980
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Re: how can i get more heat
What Andy said , I found my Heater door was sticking inside the box .
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BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen , |
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#6 |
Registered User
Join Date: May 2004
Location: Chandler, AZ
Posts: 519
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Re: how can i get more heat
These trucks aren't insulated very well. If everything else is OK. You might consider something like "The Insulator" by Bonded Logic. Poor weather stripping might also suck alot of heat away.
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![]() ![]() Last edited by Zonaman; 01-11-2006 at 12:44 PM. |
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#7 |
Registered User
Join Date: Dec 2004
Location: NW, WA.
Posts: 1,421
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Re: how can i get more heat
I just finished a rebuild on my outter heater box. When I pulled the motor/fan assembly I found that the cage fan had a few broken (plastic) blades from sticks & garbage falling through the cowl. I stuck a garden hose down each side of the cowling a flushed out years worth of pine needles, mud & leaves. I lubed the inner cable and flappers and sealed the box to the fiewall w/Black RTV. Used a motor/fan assy from a non-AC '76 GMC truck I parted out since it had a metal cage fan, it was a perfect fit and everything works better now.
The SBC Heater Hose route is Water pump to Top, Manifold to Bottom Last edited by Americanrider; 01-11-2006 at 06:06 PM. |
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#8 |
Registered User
![]() Join Date: Dec 2004
Location: Gypsum Kansas 67448
Posts: 1,681
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Re: how can i get more heat
it bet it has to do w/ the door inside,it has a a/c control panel,but a non a/c box,how can i make sure it is operating properly.....mike
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21 2500hd duramax 58 apache HILLJOB GRAPHIX--for all your graphic needs My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=542497 LS ENGINE SWAP INFORMATION THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=377348 4l60 to an NP205 http://67-72chevytrucks.com/vboard/s...43#post3697343 |
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#9 | |
The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,477
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Re: how can i get more heat
Quote:
This gets my vote, my 70 would run me plum out of it, just like a sauna ![]()
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Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T |
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#10 |
Registered User
![]() Join Date: Dec 2004
Location: Gypsum Kansas 67448
Posts: 1,681
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Re: how can i get more heat
but its a brand new heater core,ya think i should blow through with some air,i mean,i am going to redue the hoses anyway......mike
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21 2500hd duramax 58 apache HILLJOB GRAPHIX--for all your graphic needs My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=542497 LS ENGINE SWAP INFORMATION THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=377348 4l60 to an NP205 http://67-72chevytrucks.com/vboard/s...43#post3697343 |
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#11 |
Registered User
Join Date: Jan 2001
Location: Killingworth, CT. USA
Posts: 3,378
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Re: how can i get more heat
The heater hoses should give you a clue.
With the engine running and fully warmed up, hand feel the heater hoses. First the hose feeding the heater (from the intake), then the return hose (to the water pump or radiator) if the heater core and thermostat are healthy they should both be hot and almost the same temp, the feed hose slightly hotter. If that's true the core is probably okay and you have a duct problem. If the feed hose is hot/semi hot and the return is cold/semi warm then I would suspect a circulation problem such as a plugged core. If the feed and return hose is only warm, I would suspect the thermostat is stuck open/faultly. With fans running or not the thermostat should hold back the coolant in the block until the coolant temp reaches 195.
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1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist. Last edited by Gordo; 01-11-2006 at 10:32 PM. |
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#12 | |
Thats the Hillbilly way
Join Date: Jul 2001
Location: Torrance,Ca
Posts: 5,980
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Re: how can i get more heat
Quote:
Do you have a vacuum control valve on the heater input line to the core ? Here is a pic of the Heater control valve on BB .
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BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen , Last edited by Bill72BB; 01-11-2006 at 11:24 PM. |
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#13 |
Registered User
![]() Join Date: Dec 2004
Location: Gypsum Kansas 67448
Posts: 1,681
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Re: how can i get more heat
well,i switched the heater core hoses,and messed around with the knobs on the heater control,and that thing is freakin HOT,that rocks,i appreciate all your guys help......mike
__________________
21 2500hd duramax 58 apache HILLJOB GRAPHIX--for all your graphic needs My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=542497 LS ENGINE SWAP INFORMATION THREAD http://67-72chevytrucks.com/vboard/s...d.php?t=377348 4l60 to an NP205 http://67-72chevytrucks.com/vboard/s...43#post3697343 |
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#14 | |
State of Confusion!
![]() ![]() Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 46,924
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Re: how can i get more heat
Quote:
![]() ![]() Glad it worked out. ![]()
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Bill 1970 Chevy Custom/10 LWB Fleetside 2010 Toyota Tacoma PreRunner SR5 Double Cab - DD Member of Louisiana Classic Truck Club (LCTC) Bill's Gallery Life isn't tied with a bow, but it's still a gift. Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God! |
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#15 |
Registered User
Join Date: May 2004
Location: Oklahoma City
Posts: 205
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Re: how can i get more heat
Easy fix for summer: put a valve inline within the inlet hose. I have one on mine and it so nice not to have to deal with engine heat on a 98+ degree day.
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1969 chevy C10 long bed 350 4bbl auto p/disc and 5 lug |
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#16 |
Just like to part out trucks!!
Join Date: Nov 2001
Location: Meriden, Ks-North of Topeka 10 miles
Posts: 27,396
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Re: how can i get more heat
Mike, can't help on the heat deal but did you ever find any mirror arms, I finally found the set I had here. Thanks Randy
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67 Chev swb stepside 4x4 283 4 speed SOLD 72 blazer 4x4 4 speed Cheyenne 72 GMC swb 4x4 fleet 4 speed, original paint 1958 Cameo (one of 1405 built, it was my dads) 2020 chevy Apex 4x4 crew cab 1969 Z28 with the 302 1980 chevy swb 4x4 1964 chevell Malibu SS 1976 K20, sold new originally out of my dads chevy dealership Members that I've met, over 200 probably closer to 300 in the 12 years I've been on this site, everyone I met "It was a pleasure" |
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