BBC heat stove - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**DANTIP** · 01-04-2008, 10:30 AM

Does anyone know where to find/purchase stove metal for a '72 402?

**uncle** · 01-04-2008, 11:27 AM

You need the stove,not the tube,correct?

cruiserman · 01-04-2008, 11:59 AM

On a side note, how does one fix the vacuum thingy on the air cleaner (to make using the stove and pipe worthwhile)?

**DANTIP** · 01-04-2008, 01:30 PM

I have always been able to get the THERMAC arrangement to work well with a Q-Jet carb. Below is an excerpt from the THERMAC manual.

Purpose:
A heated intake air system is used to give good driveability under varying climatic conditions. By having a uniform air inlet temperature, the fuel system can be calibrated to reduce exhaust emissions and to eliminate throttle valve icing.

Operation:
The THERMAC air cleaner operates by heated air and manifold vacuum. Air can enter the air cleaner from outside the engine compartment or from a heat stove built around the exhaust manifold. A vacuum diaphram motor, built into the air cleaner snorkle, moves a damper door, to admit hot air from the exhaust manifold, outside air, or a combination of both. Inside the air cleaner is a temperature sensor that reacts to air intake temperature and controls the amount of vacuum going to the motor.

Hot Air Delivery Mode. When the temperature is below 30°C (86°F), the sensor allows vacuum to the motor and the damper door will be up, shutting off outside air and allowing only heated air from the exhaust manifold to enter the air cleaner.
Outside Air Delivery Mode. When the temperature is above 55°C (131°F), the damper door drops down and only outside air enters the air cleaner.
Regulating Mode. Between 30°C (86°F) and 55°C (131°F) the damper door allows both heated and outside air to enter the air cleaner.

**Joesjunk** · 01-04-2008, 02:15 PM

Dan, we need to see some pics of that truck of yours!!!

cruiserman · 01-04-2008, 03:31 PM

And if the vacuum valve leaks? Dealer says no replacement is available.

**DANTIP** · 01-05-2008, 02:24 AM

Joe,

Here is a photo of the options list. 115" WB, Cheyenne Super, 402, A/T, A/C, Tilt, AM-FM, Wood Bed, Chrome Rear Bumper, Red & White. The build sheet is near perfect and framed. This is the Real Deal!

JPSAUTO · 01-05-2008, 02:55 AM

A good heat stove is hard to find. I have two, one is near perfect and the other is on the opposite end of the scale. The good one is going on my 69 swb 396 CST. If you can't find a good one PM me

JPSAUTO · 01-05-2008, 02:57 AM

Another side note, was the heat stove painted, plated, or raw metal from the factory? Thanks

**uncle** · 01-05-2008, 06:10 AM

Do you need the tube or the stove?

**DANTIP** · 01-05-2008, 06:27 AM

I need the stove, but will buy both if available. Thanks!

01-04-2008, 10:30 AM	#1
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,888	BBC heat stove Does anyone know where to find/purchase stove metal for a '72 402? Attached Images

01-04-2008, 11:27 AM	#2
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	Re: BBC heat stove You need the stove,not the tube,correct?

01-04-2008, 11:59 AM	#3
cruiserman Registered User Join Date: Dec 2006 Location: Idaho Posts: 210	Re: BBC heat stove On a side note, how does one fix the vacuum thingy on the air cleaner (to make using the stove and pipe worthwhile)? __________________ 72 C2500 LWB 402 Sierra Grande 05 Odyssey 08 Tundra

01-04-2008, 01:30 PM	#4
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,888	Re: BBC heat stove I have always been able to get the THERMAC arrangement to work well with a Q-Jet carb. Below is an excerpt from the THERMAC manual. Purpose: A heated intake air system is used to give good driveability under varying climatic conditions. By having a uniform air inlet temperature, the fuel system can be calibrated to reduce exhaust emissions and to eliminate throttle valve icing. Operation: The THERMAC air cleaner operates by heated air and manifold vacuum. Air can enter the air cleaner from outside the engine compartment or from a heat stove built around the exhaust manifold. A vacuum diaphram motor, built into the air cleaner snorkle, moves a damper door, to admit hot air from the exhaust manifold, outside air, or a combination of both. Inside the air cleaner is a temperature sensor that reacts to air intake temperature and controls the amount of vacuum going to the motor. Hot Air Delivery Mode. When the temperature is below 30°C (86°F), the sensor allows vacuum to the motor and the damper door will be up, shutting off outside air and allowing only heated air from the exhaust manifold to enter the air cleaner. Outside Air Delivery Mode. When the temperature is above 55°C (131°F), the damper door drops down and only outside air enters the air cleaner. Regulating Mode. Between 30°C (86°F) and 55°C (131°F) the damper door allows both heated and outside air to enter the air cleaner.

01-04-2008, 02:15 PM	#5
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,709	Re: BBC heat stove Dan, we need to see some pics of that truck of yours!!! __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

01-04-2008, 03:31 PM	#6
cruiserman Registered User Join Date: Dec 2006 Location: Idaho Posts: 210	Re: BBC heat stove And if the vacuum valve leaks? Dealer says no replacement is available. __________________ 72 C2500 LWB 402 Sierra Grande 05 Odyssey 08 Tundra

01-05-2008, 02:24 AM	#7
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,888	Re: BBC heat stove Joe, Here is a photo of the options list. 115" WB, Cheyenne Super, 402, A/T, A/C, Tilt, AM-FM, Wood Bed, Chrome Rear Bumper, Red & White. The build sheet is near perfect and framed. This is the Real Deal! Attached Images

01-05-2008, 02:55 AM	#8
JPSAUTO Registered User Join Date: Feb 2004 Location: Indiana Posts: 158	Re: BBC heat stove A good heat stove is hard to find. I have two, one is near perfect and the other is on the opposite end of the scale. The good one is going on my 69 swb 396 CST. If you can't find a good one PM me

01-05-2008, 02:57 AM	#9
JPSAUTO Registered User Join Date: Feb 2004 Location: Indiana Posts: 158	Re: BBC heat stove Another side note, was the heat stove painted, plated, or raw metal from the factory? Thanks

01-05-2008, 06:10 AM	#10
uncle Senior Member Join Date: Aug 2003 Location: Conyers,Ga. Posts: 7,288	Re: BBC heat stove Do you need the tube or the stove?

01-05-2008, 06:27 AM	#11
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,888	Re: BBC heat stove I need the stove, but will buy both if available. Thanks!

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