Frame #'s ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68 50th · 06-01-2006, 05:08 PM

I found some #'s on the frame today when I sandblasted and painted the frame.
They were both found on the frame rails out sides just behind the front cab mounts.
Right side:
3999918-731
3 - 22 - 18
Left side:
2443636 8 7 65 58
I believe the # on the right side is the part#, in the parts book I found 3999913 for the frame rail.
I don't know if the left side # is supposed to be a particial VIN.
I have heard those are mostly found on frame upper side and/or next to the motor mount but there are no #'s to find there on my frame.
The # does not correspond to the VIN on the VIN plate on the door post, but I think the frame or at least left side frame rail have been replaced at sometime.
Anyone knows what the numbers are?

Sweet72 · 06-01-2006, 05:44 PM

Is this the '71 Cheyenne Super? Sounds kinda odd, but the 3999918-731 # sounds kind of like a gm part number.

68 50th · 06-01-2006, 05:50 PM

Quote:

Originally Posted by Sweet72

Is this the '71 Cheyenne Super?

Yes it is, but I have found out the truck is actually a 72 with a 71 VIN.

Rod · 06-01-2006, 06:46 PM

Hmm..so hows the vin start compared to the number stamped on frame. Production year is not calender year also. But if the vins 71 and title as a 72 thats something to make me say, hmmm.

Robert1970C20rstbukt · 06-01-2006, 06:56 PM

Are you sure there are no numbers on the top frame rail right next to the steering box? If there aren't then someone grinded 'em down, probably why it's a 71 with a 72 title.

Chevrolet4x4s · 06-01-2006, 09:20 PM

Quote:

Originally Posted by Robert1970C20rstbukt

Are you sure there are no numbers on the top frame rail right next to the steering box? If there aren't then someone grinded 'em down, probably why it's a 71 with a 72 title.

....As In stolen??????????? That might be bad
Shane

SK1970 · 06-01-2006, 10:24 PM

The Frame# Should Also Be On The Top Of The Frame Rail On The Drivers Side Under The Where The Drivers Side Door Would Be.

Robert1970C20rstbukt · 06-01-2006, 10:30 PM

I ain't trying to say it's stolen, I just don't know any other reason why anyone would want to remove the factory stamping. What they might have done was use a different frame for the cab with the original VIN plate. Just my .02.

SK1970 · 06-01-2006, 10:32 PM

If you do not see any marks where the frame numbers have been ground it might be a GM replacement frame. GM replacement frames would only have a part# on it. This would mean that at some time your truck might have been in an accident and the frame could not be fixed and had to be replaced.

68 50th · 06-02-2006, 12:40 AM

The VIN on the VIN plate and the title are the same: CE241Z646752.
There are some 72 only things on it like mirror mount on the windshield, vented door post (were the VIN plate are) 72 only BB motor mounts, 72 doors.

PHP Code:


			
Are you sure there are no numbers on the top frame rail right next to the steering box?

I am sure there are no numbers there and there’s no sign of any grinding.
There are obvious signs of an accident and the left frame rail are bolted to all the x-members, not riveted as the right side are.

Chevrolet4x4s · 06-03-2006, 12:04 AM

BINGO right there is the answer
Shane

68 50th · 06-03-2006, 01:15 AM

Still curious to know what the # 2443636 8 7 65 58 are.
If the right side rail is a GM replacement it's maybe part #
If the rail came from another truck the maybe it is part of a VIN.
Anyone?

06-01-2006, 05:08 PM	#1
68 50th Senior Member Join Date: Jul 2004 Location: Sweden Posts: 833	Frame #'s ? I found some #'s on the frame today when I sandblasted and painted the frame. They were both found on the frame rails out sides just behind the front cab mounts. Right side: 3999918-731 3 - 22 - 18 Left side: 2443636 8 7 65 58 I believe the # on the right side is the part#, in the parts book I found 3999913 for the frame rail. I don't know if the left side # is supposed to be a particial VIN. I have heard those are mostly found on frame upper side and/or next to the motor mount but there are no #'s to find there on my frame. The # does not correspond to the VIN on the VIN plate on the door post, but I think the frame or at least left side frame rail have been replaced at sometime. Anyone knows what the numbers are? Attached Images __________________ Mats.. ---------------------------------------------------- 1971 Cheyenne Super Custom Camper 475CBB/TH400/AC 1992 Silverado Sport Truck 1988 Silverado 2500 Ext Longbed 4x4 2001 GMC Sierra SLT 4x4 1990 Chevrolet K3500 1965 Pontiac Grand Prix 1980 Z 28 350/4-speed/AC/T-top 1980 Camaro Coupe V6/3-speed 1979 Buick Century Wagon

06-01-2006, 05:44 PM	#2
Sweet72 Registered User Join Date: Nov 2003 Location: Alexandria, VA Posts: 1,534	Re: Frame #'s ? Is this the '71 Cheyenne Super? Sounds kinda odd, but the 3999918-731 # sounds kind of like a gm part number. __________________ '72 GMC SWB C1500 Custom, frame-off in progress. 383 SBC, 9:1CR, Comp Cams XE262H, Scat internal balanced crank, Eagle SIR 6" rods, Keith Black dish pistons, Dart Iron Eagle 72/180 heads, Weiand Stealth intake, Stewart stage I water pump, Holley 4bbl vac sec, TH350 with B&M Shift Improver Kit. 12 bolt positraction.

06-01-2006, 06:46 PM	#4
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Re: Frame #'s ? Hmm..so hows the vin start compared to the number stamped on frame. Production year is not calender year also. But if the vins 71 and title as a 72 thats something to make me say, hmmm. __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

06-01-2006, 06:56 PM	#5
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Re: Frame #'s ? Are you sure there are no numbers on the top frame rail right next to the steering box? If there aren't then someone grinded 'em down, probably why it's a 71 with a 72 title. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

06-01-2006, 10:24 PM	#7
SK1970 Active Member Join Date: Sep 2003 Location: ALABAMA Posts: 110	Re: Frame #'s ? The Frame# Should Also Be On The Top Of The Frame Rail On The Drivers Side Under The Where The Drivers Side Door Would Be.

06-01-2006, 10:30 PM	#8
Robert1970C20rstbukt Registered User Join Date: Jun 2004 Location: Beeville, Texas Posts: 1,943	Re: Frame #'s ? I ain't trying to say it's stolen, I just don't know any other reason why anyone would want to remove the factory stamping. What they might have done was use a different frame for the cab with the original VIN plate. Just my .02. __________________ RJD 1984 Chevrolet C30 welding truck 454/SM465 1977 GMC C15 pickup 350/TH350 1970 Chevrolet C20 pickup 350/TH400 1970 Chevrolet K20 Suburban 454/TH350 1969 GMC 8500 478M V6/5 spd winch truck

06-01-2006, 10:32 PM	#9
SK1970 Active Member Join Date: Sep 2003 Location: ALABAMA Posts: 110	Re: Frame #'s ? If you do not see any marks where the frame numbers have been ground it might be a GM replacement frame. GM replacement frames would only have a part# on it. This would mean that at some time your truck might have been in an accident and the frame could not be fixed and had to be replaced.

06-02-2006, 12:40 AM	#10
68 50th Senior Member Join Date: Jul 2004 Location: Sweden Posts: 833	Re: Frame #'s ? The VIN on the VIN plate and the title are the same: CE241Z646752. There are some 72 only things on it like mirror mount on the windshield, vented door post (were the VIN plate are) 72 only BB motor mounts, 72 doors. PHP Code: `Are you sure there are no numbers on the top frame rail right next to the steering box?` I am sure there are no numbers there and there’s no sign of any grinding. There are obvious signs of an accident and the left frame rail are bolted to all the x-members, not riveted as the right side are. __________________ Mats.. ---------------------------------------------------- 1971 Cheyenne Super Custom Camper 475CBB/TH400/AC 1992 Silverado Sport Truck 1988 Silverado 2500 Ext Longbed 4x4 2001 GMC Sierra SLT 4x4 1990 Chevrolet K3500 1965 Pontiac Grand Prix 1980 Z 28 350/4-speed/AC/T-top 1980 Camaro Coupe V6/3-speed 1979 Buick Century Wagon

06-03-2006, 12:04 AM	#11
Chevrolet4x4s Registered User Join Date: Nov 2005 Location: WV Posts: 227	Re: Frame #'s ? BINGO right there is the answer Shane __________________ 1993 K1500 350 5 speed 1985 K10 Silverado Vortec 406 5 speed (in body shop) "I been drivin' this '85 pickup truck Them buddies of mine call it a bucket of rust She's a little beat up but she still runs like the wind Yeah, kinda like me I been banged and bruisedBeen around the block a time or two But I'm runnin' like new goin' places I never been No, I ain't broke I'm just broken in" 1963 Dodge Townwagon(its amazng what 30 years and zero miles will do to a vehicle ) Member#20327

06-03-2006, 01:15 AM	#12
68 50th Senior Member Join Date: Jul 2004 Location: Sweden Posts: 833	Re: Frame #'s ? Still curious to know what the # 2443636 8 7 65 58 are. If the right side rail is a GM replacement it's maybe part # If the rail came from another truck the maybe it is part of a VIN. Anyone? __________________ Mats.. ---------------------------------------------------- 1971 Cheyenne Super Custom Camper 475CBB/TH400/AC 1992 Silverado Sport Truck 1988 Silverado 2500 Ext Longbed 4x4 2001 GMC Sierra SLT 4x4 1990 Chevrolet K3500 1965 Pontiac Grand Prix 1980 Z 28 350/4-speed/AC/T-top 1980 Camaro Coupe V6/3-speed 1979 Buick Century Wagon



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