What are these #'s on my frame? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72stepside4WD · 08-29-2010, 09:43 PM

What is the meaning of the numbers stamped into the side of the frame rail near the driver-side & passenger-side door? Driver -side # is 3999925 271 5 9 34, see picture. Passenger-side # is one digit different- 3999925 271 5 10 34. The numbers are stamped upside-down.

Also at the very front of the frame rail near the bumper, on the outside, the # 271 is stamped on both sides. Does this mean the frame is a 1971 2wd frame? Thanks for your help.

71swb4x4 · 08-29-2010, 10:23 PM

Do any of those numbers match the last six of your VIN?

Sammy · 08-29-2010, 10:35 PM

Partial vin numbers are common on the frame, also date and year on 71 & 72's.

72stepside4WD · 08-30-2010, 12:06 AM

Quote:

Originally Posted by Sammy

Partial vin numbers are common on the frame, also date and year on 71 & 72's.

So would you say it is safe to say the frame is from a 71 or 72? The numbers on the frame do not match any in the VIN #. Is it possible to determine the year and type (2wd or 4wd) of frame I have using those #'s off the frame?

mrein3 · 08-30-2010, 07:44 AM

Quote:

Originally Posted by 72stepside4WD

So would you say it is safe to say the frame is from a 71 or 72? The numbers on the frame do not match any in the VIN #. Is it possible to determine the year and type (2wd or 4wd) of frame I have using those #'s off the frame?

There is a partial VIN number stamped on the top of the lhs frame rail, about a foot behind the steering box. I don't recall what part of the VIN is there but you'll get somewhat of an idea of what you got.

BTW, 40 year old frames don't look like that up here in Minnesota. Pictures like that amaze me.

**yote1234** · 08-30-2010, 11:28 AM

i belive this is 2-71 feb/1971

sameyrasmea72 · 08-30-2010, 01:04 PM

The long # is the part # for the frame or each frame rail. As for the vin # it is stamped in 2 places on the top side of the frame (one under the cab and one by the steering box). The very 1st digit tells what year the frame is (the one in the pic is a 1972), then a Letter which is the plant it was made at, and the the last 6 digits are the part that matches the vin.

08-29-2010, 09:43 PM	#1
72stepside4WD Registered User Join Date: Oct 2006 Location: California Posts: 28	What are these #'s on my frame? What is the meaning of the numbers stamped into the side of the frame rail near the driver-side & passenger-side door? Driver -side # is 3999925 271 5 9 34, see picture. Passenger-side # is one digit different- 3999925 271 5 10 34. The numbers are stamped upside-down. Also at the very front of the frame rail near the bumper, on the outside, the # 271 is stamped on both sides. Does this mean the frame is a 1971 2wd frame? Thanks for your help. Attached Images

08-29-2010, 10:23 PM	#2
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: What are these #'s on my frame? Do any of those numbers match the last six of your VIN? __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

08-29-2010, 10:35 PM	#3
Sammy Registered User Join Date: Apr 2000 Location: Bonne Terre, Mo Posts: 3,005	Re: What are these #'s on my frame? Partial vin numbers are common on the frame, also date and year on 71 & 72's. __________________ '69 Chevy Long Fleet & '71 GMC Short Step & Project "ODD BALL" "You can wash a pig, soak it in most expensive perfume. In the end it is still just a pig." ODD BALL build thread http://67-72chevytrucks.com/vboard/s...d.php?t=478629"

08-30-2010, 11:28 AM	#6
yote1234 Senior Member Join Date: Feb 2003 Location: Gold Canyon Arizona Posts: 4,331	Re: What are these #'s on my frame? i belive this is 2-71 feb/1971 __________________ 1971 K5 CST Blazer 1965 Chevelle Malibu 283 (sadly sold) 1968 Camaro 327 1968 Honda mini-trail z50a #377 1966 uh 1-D Huey

08-30-2010, 01:04 PM	#7
sameyrasmea72 Senior Member Join Date: Aug 2003 Location: Lubbock, Texas Posts: 2,443	Re: What are these #'s on my frame? The long # is the part # for the frame or each frame rail. As for the vin # it is stamped in 2 places on the top side of the frame (one under the cab and one by the steering box). The very 1st digit tells what year the frame is (the one in the pic is a 1972), then a Letter which is the plant it was made at, and the the last 6 digits are the part that matches the vin. Attached Images __________________ 72 Cheyenne Super 80 Silverado Blazer 2wd Last edited by sameyrasmea72; 08-30-2010 at 01:08 PM.



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