On-board air from 6bt/12V - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1972K20 · 05-22-2016, 11:23 PM

Has anyone put a compressor on a 6bt from a bigger series truck(air brakes) on 67-72 Chevy truck for on-board air? I'm curious to know if anyone knows how to do this.

burnin oil · 05-23-2016, 12:44 PM

Never done it but looked into it. Basically you can get one off a F700 with air brakes and bolt it on. Most of the compressors are a bolt on where the vacuum pump is. I cant remember the application for the PS pump off the rear but it should be easy to find in a Bendix catalog. It can be easily done with factory parts and can be done several ways which allows making it fit a lot easier. Cummins even has a kit available for the water cooled models. It replaces the freeze plug just below the head on the back of the block. This is a good mod if the motor is modded as the water pump can actually force that plug out. It sucks when it happens too. That sucker is over 2"s and can flow antifreeze really quick!

**Dieselwrencher** · 05-23-2016, 09:01 PM

Ryanroo put one on his 72 K20 project. You can probably pick his brain about the PS pump and pressures.

1972K20 · 05-25-2016, 10:55 PM

Thanks, I'll check it out.

05-22-2016, 11:23 PM	#1
1972K20 Registered User Join Date: Nov 2010 Location: Alabama Posts: 741	On-board air from 6bt/12V Has anyone put a compressor on a 6bt from a bigger series truck(air brakes) on 67-72 Chevy truck for on-board air? I'm curious to know if anyone knows how to do this.

05-23-2016, 12:44 PM	#2
burnin oil Registered User Join Date: Jan 2013 Location: Eastern TN Posts: 1,921	Re: On-board air from 6bt/12V Never done it but looked into it. Basically you can get one off a F700 with air brakes and bolt it on. Most of the compressors are a bolt on where the vacuum pump is. I cant remember the application for the PS pump off the rear but it should be easy to find in a Bendix catalog. It can be easily done with factory parts and can be done several ways which allows making it fit a lot easier. Cummins even has a kit available for the water cooled models. It replaces the freeze plug just below the head on the back of the block. This is a good mod if the motor is modded as the water pump can actually force that plug out. It sucks when it happens too. That sucker is over 2"s and can flow antifreeze really quick!

05-23-2016, 09:01 PM	#3
Dieselwrencher 6>8 Plugless........ Join Date: Sep 2007 Location: Prairie City, Ia Posts: 17,142	Re: On-board air from 6bt/12V Ryanroo put one on his 72 K20 project. You can probably pick his brain about the PS pump and pressures. __________________ Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project *Tired of spark plugs? Check this out.*

05-25-2016, 10:55 PM	#4
1972K20 Registered User Join Date: Nov 2010 Location: Alabama Posts: 741	Re: On-board air from 6bt/12V Thanks, I'll check it out.



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