Body Mount Measurements - The 1947 - Present Chevrolet & GMC Truck Message Board Network

AJs72K5 · 10-29-2022, 09:24 PM

I'm working on a chassis build for my '72 K5 (4x4). I have scoured this site and the internet for detailed frame specifications. Yes, the Roadstershop has a K5 chassis, but at $40K, they are way too proud of it.

This post is the only thing I've found with 4x4 Blazer measurements.

http://67-72chevytrucks.com/vboard/s...1&postcount=28

The Factory Chassis manual has some frame measurements, but I cannot locate ANYTHING that has the measurements and frame locations for all 12 body mounts.

I do also have an email out to the GM Heritage Archive with this same request.

Looking for these three things:

Location on frame

Center of hole across to center of hole - this'll give distance from frame horizontal

Distance vertically from top of frame rail surface

Anyone have this or can get them from their frame

AJs72K5 · 10-31-2022, 03:12 PM

Had an aha moment looking at the diagram in my previous post and the one from the Factory Assembly Manual for the Blazer body mount positions.

The numbers above the body mount location are distance from a landmark on the frame... specifically a hole in the center of the frame rail where the frame bends in at the firewall for the engine compartment. Translating this to distance from frame horn, here's what I have so far:

AJs72K5 · 11-13-2022, 11:43 PM

I goofed on the core support measurement. Corrected it below in green.

**jaros44sr** · 11-14-2022, 08:42 AM

Great information, I suggest that we move this to a sticky up top

Well done AJ

1972CST · 11-17-2022, 01:05 PM

Just curious what the plans are for the chassis?
Boxed construction? Modern suspension?

AJs72K5 · 11-26-2022, 06:36 PM

Quote:

Originally Posted by 1972CST

Just curious what the plans are for the chassis?
Boxed construction? Modern suspension?

Fully boxed chassis. 3 link coilover suspension front, 4 link coilover suspension rear.

AJs72K5 · 12-01-2022, 12:50 PM

Got all of the measurements in hand to complete the chart. Remember, these are for a K5 only. Gave me what I needed to complete the chassis design. Hope it helps someone else.

1972CST · 12-01-2022, 01:14 PM

What's the final goal? Tire size, suspension travel, ... ?
Looking forward to this...

AJs72K5 · 12-02-2022, 02:56 PM

Quote:

Originally Posted by 1972CST

What's the final goal? Tire size, suspension travel, ... ?
Looking forward to this...

35's with 10-12 inches of travel. I need to make a long overdue update to my build thread.

10-29-2022, 09:24 PM	#1
AJs72K5 Registered User Join Date: Nov 2007 Location: South Tx Posts: 1,083	Body Mount Measurements I'm working on a chassis build for my '72 K5 (4x4). I have scoured this site and the internet for detailed frame specifications. Yes, the Roadstershop has a K5 chassis, but at $40K, they are way too proud of it. This post is the only thing I've found with 4x4 Blazer measurements. http://67-72chevytrucks.com/vboard/s...1&postcount=28 The Factory Chassis manual has some frame measurements, but I cannot locate ANYTHING that has the measurements and frame locations for all 12 body mounts. I do also have an email out to the GM Heritage Archive with this same request. Looking for these three things: Location on frame Center of hole across to center of hole - this'll give distance from frame horizontal Distance vertically from top of frame rail surface Anyone have this or can get them from their frame __________________ - AJ Gray Matter Build - 1972 K5 with some stuff

10-31-2022, 03:12 PM	#2
AJs72K5 Registered User Join Date: Nov 2007 Location: South Tx Posts: 1,083	Re: Body Mount Measurements Had an aha moment looking at the diagram in my previous post and the one from the Factory Assembly Manual for the Blazer body mount positions. The numbers above the body mount location are distance from a landmark on the frame... specifically a hole in the center of the frame rail where the frame bends in at the firewall for the engine compartment. Translating this to distance from frame horn, here's what I have so far: Attached Images __________________ - AJ Gray Matter Build - 1972 K5 with some stuff

11-13-2022, 11:43 PM	#3
AJs72K5 Registered User Join Date: Nov 2007 Location: South Tx Posts: 1,083	Re: Body Mount Measurements I goofed on the core support measurement. Corrected it below in green. Attached Images __________________ - AJ Gray Matter Build - 1972 K5 with some stuff

11-14-2022, 08:42 AM	#4
jaros44sr Senior Member Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,759	Re: Body Mount Measurements Great information, I suggest that we move this to a sticky up top Well done AJ __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

11-17-2022, 01:05 PM	#5
1972CST Registered User Join Date: Mar 2008 Location: Concord NC Posts: 511	Re: Body Mount Measurements Just curious what the plans are for the chassis? Boxed construction? Modern suspension?

12-01-2022, 12:50 PM	#7
AJs72K5 Registered User Join Date: Nov 2007 Location: South Tx Posts: 1,083	Re: Body Mount Measurements Got all of the measurements in hand to complete the chart. Remember, these are for a K5 only. Gave me what I needed to complete the chassis design. Hope it helps someone else. Attached Images __________________ - AJ Gray Matter Build - 1972 K5 with some stuff

12-01-2022, 01:14 PM	#8
1972CST Registered User Join Date: Mar 2008 Location: Concord NC Posts: 511	Re: Body Mount Measurements What's the final goal? Tire size, suspension travel, ... ? Looking forward to this...



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