47-55.1 another measurement question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

scott123 · 04-23-2025, 09:08 PM

1950 Chevrolet 3100. Inside to inside measure of the lower portion of the core support, just before is rounds out.

I didn't measure and intended to keep the core support intact. Turns out it is rusty as all get out. I had to cut it out and didn't brace first. I got in a hurry and got ahead of myself.

Scott

nvrdone · 04-23-2025, 11:38 PM

I'm not sure exactly what measurement you are looking for but here goes.
The core support on my '49 is right at 20" inside at both the top of the support and at the bottom where the support starts to turn in. That makes both sides parallel.
Hope this helps.

**mr48chev** · 04-24-2025, 12:12 AM

I've got a couple laying out trying to decide which one to clean up and use and can get measurements in the morning if I remember.

**mr48chev** · 04-24-2025, 03:03 PM

This is the inside to inside measurement and the outside measurement in the same spot. Just below the bottom hole for the bolts that hold the radiator to the support.

nvrdone · 04-24-2025, 04:51 PM

The difference in measurements just goes to show the lack of quality control when our trucks were built

scott123 · 04-24-2025, 08:56 PM

Thanks. It will give me a starting spot.

I am hoping to get the cab mounted this weekend if I can get the time off.

Pics to follow.

Again, thanks for the help.

Scott

04-23-2025, 09:08 PM	#1
scott123 Registered User Join Date: Dec 2007 Location: Middleburg, North Carolina Posts: 503	another measurement question 1950 Chevrolet 3100. Inside to inside measure of the lower portion of the core support, just before is rounds out. I didn't measure and intended to keep the core support intact. Turns out it is rusty as all get out. I had to cut it out and didn't brace first. I got in a hurry and got ahead of myself. Scott

04-23-2025, 11:38 PM	#2
nvrdone Registered User Join Date: Dec 2011 Location: Moxee WA Posts: 1,699	Re: another measurement question I'm not sure exactly what measurement you are looking for but here goes. The core support on my '49 is right at 20" inside at both the top of the support and at the bottom where the support starts to turn in. That makes both sides parallel. Hope this helps. __________________ 49 chevy 3100 3 window. 327 / m21 4 spd, 12 bolt w/ 3:55's Bought in 1973 for $235.00. Had it longer than my wife & Kids!!

04-24-2025, 12:12 AM	#3
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 16,391	Re: another measurement question I've got a couple laying out trying to decide which one to clean up and use and can get measurements in the morning if I remember. __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

04-24-2025, 03:03 PM	#4
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 16,391	Re: another measurement question This is the inside to inside measurement and the outside measurement in the same spot. Just below the bottom hole for the bolts that hold the radiator to the support. Attached Images __________________ Founding member of the too many projects, too little time and money club. My ongoing truck projects: 48 Chev 3100 that will run a 292 Six. 71 GMC 2500 that is getting a Cad 500 transplant. 77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.

04-24-2025, 04:51 PM	#5
nvrdone Registered User Join Date: Dec 2011 Location: Moxee WA Posts: 1,699	Re: another measurement question The difference in measurements just goes to show the lack of quality control when our trucks were built __________________ 49 chevy 3100 3 window. 327 / m21 4 spd, 12 bolt w/ 3:55's Bought in 1973 for $235.00. Had it longer than my wife & Kids!!

04-24-2025, 08:56 PM	#6
scott123 Registered User Join Date: Dec 2007 Location: Middleburg, North Carolina Posts: 503	Re: another measurement question Thanks. It will give me a starting spot. I am hoping to get the cab mounted this weekend if I can get the time off. Pics to follow. Again, thanks for the help. Scott



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