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Grilles for 1934, 35, and 36 GM trucks


To 1934-35 and 1936 GM Truck Customers

A limited number of new grilles have just arrived! They are totally SHOW QUALITY, mirrow-polished, stainless steel. Includes outer reinforcing band, vertical center bars, and special customer fasteners to attach to your outer shell.

LOOK HERE
and see

Limited Quantity!

Old Chevy Trucks.com

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#839479 - Wed Mar 28 2012 07:24 PM Re: GMC 450 curb weight needed [Re: k9trucker]
spanky Offline
Shop Shark
Registered: Fri Dec 20 2002 12:00 PM
Posts: 4009
Loc: burlington, n.c.
My truck has (F453 30 1023) on the ID tag in the driver door jamb. I've never seen a letter after the initial series no. ie: 452 except once, & it was a "x" after (HF 602x 31 1245) This was a 600 series "Cannonball" COE I once owned, & the "x" in the ID number denoted it being a special order wheelbase. Your "a" has me puzzeled. I saw a air over hydraulic '54 GMC 450 series once with "Hyd./Air" on the glove box lid plate, nest to serv. brakes.
_________________________
Spanky Hardy......Collector Of Fine Old G.M. COE Trucks & Antique Holmes Wreckers
1950 GMC 250 1-Ton in the Gallery
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#839493 - Wed Mar 28 2012 08:18 PM Re: GMC 450 curb weight needed [Re: spanky]
k9trucker Offline
Wrench Fetcher
Registered: Mon Mar 12 2012 10:40 PM
Posts: 60
Loc: United States
I looked at the drivers door jam to see if the a is on it, it is not. There is a 452 a large space then 30 another long space followed by the 4 digit serial number. The glove box tag lists the model as 452. There is no A on the glove box tag either. On the center of the dash there is a large nomenclature tag that lists the empty weight, payload max weight and the combined maximum weight, plus the contract no. date of delivery, where it was built, who it was built for USAF and the make - GMC and model - 45230A on the same line. Model 45230A is also on my paperwork needed to receive a title. On the bottom of the tag are the large letters PMS with an insignia next to it. I don't know what that is about.

The Hyd./air would be the accurate notation on the glove box, but it only says AIR
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#839768 - Thu Mar 29 2012 07:54 PM Re: GMC 450 curb weight needed [Re: k9trucker]
peytonmaterne Offline
Wrench Fetcher
Registered: Fri Dec 04 2009 11:05 AM
Posts: 106
Loc: SE Ohio
K9, my 450 is air over hydraulic also, and states air on the glovebox tag. The booster for this system is known as an air-pack.
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#839772 - Thu Mar 29 2012 08:04 PM Re: GMC 450 curb weight needed [Re: peytonmaterne]
peytonmaterne Offline
Wrench Fetcher
Registered: Fri Dec 04 2009 11:05 AM
Posts: 106
Loc: SE Ohio
I'm in my diesel mindset, air-pack for diesel, hydrovac for the gassers.
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#839812 - Thu Mar 29 2012 09:52 PM Re: GMC 450 curb weight needed [Re: peytonmaterne]
k9trucker Offline
Wrench Fetcher
Registered: Mon Mar 12 2012 10:40 PM
Posts: 60
Loc: United States
I'm wondering if the compressor is the same for air over and full air.
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#840006 - Fri Mar 30 2012 07:17 PM Re: GMC 450 curb weight needed [Re: k9trucker]
peytonmaterne Offline
Wrench Fetcher
Registered: Fri Dec 04 2009 11:05 AM
Posts: 106
Loc: SE Ohio
Looking in my maintenance manual, I see one compressor listed. Midland steel products, model N-4098, so should be the same compressor for both setups.
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#840070 - Fri Mar 30 2012 11:16 PM Re: GMC 450 curb weight needed [Re: peytonmaterne]
k9trucker Offline
Wrench Fetcher
Registered: Mon Mar 12 2012 10:40 PM
Posts: 60
Loc: United States
Maybe the compressor is the determining factor then.
Is hydrovac a brand name or a descriptive name?
Vacuum isn't used is it? I certainly don't know how they work.

Tonight I pulled the plugs squirted alittle oil down each cyl and thought I'd crank it with the plugs out. There was nothing. Not a click, no sound at all from the starter. If the engine was stuck I thought I'd hear something from the starter, but don't know because I've never tried turning over a stuck motor before. Tomorrow I'll try to turn it over by hand to find out if it is stuck. The battery is good. The headlights did come on, but somewhat slowly. I'll have one of my boys push the floor starter button while I watch it to see if that is working right too. Anything I'm missing?
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#840080 - Sat Mar 31 2012 12:55 AM Re: GMC 450 curb weight needed [Re: k9trucker]
Mike B Offline
Shop Shark
Registered: Sun Mar 07 2004 12:00 PM
Posts: 2133
Loc: Hughesville, MD
Hydrovac is a descriptive name, I believe Bendix made them and yes they are vacuum actuated. Many other brands used them as well like Ford and Dodge.

Turn the head lights on and see if they dim or go out when you hit the starter. If they do then the battery is weak.

Put the truck in High Gear and gently rock the truck back and forth and see if the motor turns. Make sure to have wheel chocks on both sides of the tires (about 6" away so the truck can roll, but not get away from you if the motor breaks free.

Mike B smile
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#840102 - Sat Mar 31 2012 07:45 AM Re: GMC 450 curb weight needed [Re: Mike B]
kb3csw Offline
Shop Shark
Registered: Wed Dec 24 2003 12:00 PM
Posts: 1303
Loc: Pocomoke City, MD
you may want to pull the button assembly off top of starter and clean contact on top of starter and inside button assembly. don't lose the cardboard inserts inside starter button housing ,it prevents accidental arcing. might want to remove valve cover and spray around valve stems and make sure they are free. cool truck.
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#840110 - Sat Mar 31 2012 08:20 AM Re: GMC 450 curb weight needed [Re: kb3csw]
peytonmaterne Offline
Wrench Fetcher
Registered: Fri Dec 04 2009 11:05 AM
Posts: 106
Loc: SE Ohio
K9, the hydrovac uses vacuum, while the air pack uses air pressure, since you have an air compressor then it must have the air pack system?
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