Vacuum thingy on air cleaner - The 1947 - Present Chevrolet & GMC Truck Message Board Network

69-72 · 03-05-2009, 10:39 AM

Where can I get a replacement vacuum actuator, motor thingy that moves the door on the air cleaner to let hot air up from the exhaust?

I have spent hours looking everywhere on the intrawebs and there are a few different names for it and it doesn't seem to be that common of a part.

This is for my 72 Blazer 350 btw.

Extra points for a part #

Thanks

**1970cstblazer** · 03-05-2009, 12:22 PM

Here is the correct NOS sensor:

GM # 6484244

The Thermac vacuum motor is reproduced by the Parts Place www.thepartsplaceinc.com. This should work, although it was patterend after a Chevelle part..

1969 - 1975 Chevelle) AIR CLEANER VACUUM ACTUATED HEAT DIAPHRAGM & BRACKET - THIS IS THE VACUUM MOTOR THAT IS USED ON MOST ALL GM AIR CLEANERS
$19.00

Part number: CW8422Z

69-72 · 03-05-2009, 05:24 PM

Thanks can't get much better info then that. I guess they aren't making these anymore, ie.Napa

sjarrett71 · 03-05-2009, 08:32 PM

I forgot the name to ask for but AutoZone had them a few years ago. I think I actually looked it up in the catalog at the store though cause the clerks had no idea what it was.

acl · 03-05-2009, 10:05 PM

Don't know the part your looking for or where to find it, but when you start throwing around sentences using "vacuum thingy" and "motor thingy" makes me just want to buy you a beer. Nice to know I am not alone. Good luck with search. The "thingy" has to be out there somewhere. Gary

spinning wheels · 03-06-2009, 12:03 AM

Quote:

Originally Posted by acl

Don't know the part your looking for or where to find it, but when you start throwing around sentences using "vacuum thingy" and "motor thingy" makes me just want to buy you a beer. Nice to know I am not alone. Good luck with search. The "thingy" has to be out there somewhere. Gary

Its called a " Thermostatically Controlled Air Cleaner". Well thats the name of the whole unit. Mine went into the recycling bin.

I never intended my truck to be a bone stock truck.

Oh yeah, besides the technical terms, like "the whachamacallit", there is the "thingy". But my favorite is the "chingadera".

03-05-2009, 10:39 AM	#1
69-72 Registered User Join Date: May 2008 Location: 204 Posts: 903	Vacuum thingy on air cleaner Where can I get a replacement vacuum actuator, motor thingy that moves the door on the air cleaner to let hot air up from the exhaust? I have spent hours looking everywhere on the intrawebs and there are a few different names for it and it doesn't seem to be that common of a part. This is for my 72 Blazer 350 btw. Extra points for a part # Thanks __________________ 1969 Chevy Custom Camper 3/4 ton Rust free survivor 1972 Chevy Blazer CST 4x4 Almost Rust free survivor 1972 GMC Jimmy 2wd Undergoing surgery

03-05-2009, 12:22 PM	#2
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 2,084	Re: Vacuum thingy on air cleaner Here is the correct NOS sensor: GM # 6484244 The Thermac vacuum motor is reproduced by the Parts Place www.thepartsplaceinc.com. This should work, although it was patterend after a Chevelle part.. 1969 - 1975 Chevelle) AIR CLEANER VACUUM ACTUATED HEAT DIAPHRAGM & BRACKET - THIS IS THE VACUUM MOTOR THAT IS USED ON MOST ALL GM AIR CLEANERS $19.00 Part number: CW8422Z __________________ 1970 K/5 Blazer CST 4WD, TOTM winner December 2024! Medium Bronze poly, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD Kelsey Hayes wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1970 K20, To be a clone of my Grandfather's K20, Dark Blue poly, 350, 4 speed, 16.5" X 8.25" Kelsey Hayes wheel option, tilt, tach, vacuum, AM radio. Latest project truck 1972 Cheyenne Super 20 2WD, Dark Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 46k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 67k miles, 3.6, 8L45, 3.23 LS, 18" wheels

03-05-2009, 05:24 PM	#3
69-72 Registered User Join Date: May 2008 Location: 204 Posts: 903	Re: Vacuum thingy on air cleaner Thanks can't get much better info then that. I guess they aren't making these anymore, ie.Napa __________________ 1969 Chevy Custom Camper 3/4 ton Rust free survivor 1972 Chevy Blazer CST 4x4 Almost Rust free survivor 1972 GMC Jimmy 2wd Undergoing surgery

03-05-2009, 08:32 PM	#4
sjarrett71 Registered User Join Date: Dec 2006 Location: Rolla, MO Posts: 2,463	Re: Vacuum thingy on air cleaner I forgot the name to ask for but AutoZone had them a few years ago. I think I actually looked it up in the catalog at the store though cause the clerks had no idea what it was.

03-05-2009, 10:05 PM	#5
acl Registered User Join Date: May 2007 Location: Emporia, kansas Posts: 302	Re: Vacuum thingy on air cleaner Don't know the part your looking for or where to find it, but when you start throwing around sentences using "vacuum thingy" and "motor thingy" makes me just want to buy you a beer. Nice to know I am not alone. Good luck with search. The "thingy" has to be out there somewhere. Gary



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