engine assembly code - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hilandr452 · 01-21-2009, 02:46 PM

OK, what you're saying is that it just doesn't come on trucks? Don't flame me, I'm just trying to clarify.

sameyrasmea72 · 01-21-2009, 02:55 PM

I am just saying the info you already have is just about all the info you are going to get. There is not a for sure 100% guarentee way to tell if a 67-72 chevy truck has the original engine or not because THERE IS NO VIN # ANYWHERE ON A TRUCK MOTOR.

**leddzepp** · 01-21-2009, 03:04 PM

Quote:

Originally Posted by sameyrasmea72

There is no, repeat no vin # stamped on a truck motor period.

x2

hilandr452 · 01-21-2009, 03:57 PM

Quote:

Originally Posted by sameyrasmea72

I am just saying the info you already have is just about all the info you are going to get. There is not a for sure 100% guarentee way to tell if a 67-72 chevy truck has the original engine or not because THERE IS NO VIN # ANYWHERE ON A TRUCK MOTOR.

I got it, I was simply trying to clarify. No need to shout, man.

sameyrasmea72 · 01-21-2009, 04:05 PM

I did not mean to shout.

I was just trying to get to the point that Stope and Clay and others made earlier in the thread.

hilandr452 · 01-21-2009, 04:07 PM

Thanks for the info, I'm satisfied this is the original motor.

Dan

sameyrasmea72 · 01-21-2009, 04:10 PM

I was going to say that I would be very confident that your engine is the original one. Too many things line up for it not to be.

hilandr452 · 01-21-2009, 05:41 PM

This truck was a nice find. I've been dreaming about one of these since I was a kid.

**DANTIP** · 09-10-2009, 05:17 PM

FYI,

My 72 engine code is T1221TLM and my truck was assembled January 5, 1972 (from Build-Sheet). The "T" stands for Tonowanda, the 1221 stands for December (12), 21st (21) and the TLM is the correct code for a 72 402 with A/T and smog pump. By the way, my Protect-o-plate has the T1221TLM stamped in it. That's as close as you get to "Numbers-Matching" in these trucks.

Did your look for the Protect-o-plate?

roger0080 · 09-10-2009, 10:51 PM

You would need the protect-o-plate that came with the truck to determine that.

Chevrolet protect-o-plates have the engine number stamped on the POP to match the engine. But it seems that GMC would just say the engine size like "400" for a 396/400/402 and not have the stamped engine number on it on the POP. So even if you had the POP for it, it wouldn't have the engine number on it. This is all from memory so it may not be 100% correct.

327-C10 · 09-11-2009, 07:58 PM

Quote:

Originally Posted by hilandr452

Clearly, there is no number located on this deck. Here's a picture.

I think there are other locations on the engine for this information, so I'm going to see what I can figure out. Any info or advice would be helpful.

Dan

Having 30 year of re building engine for the corvette guys I would say that is not a re-stamped block. Normally the broaching marks after decking a block (only 2 reasons to are to confirm center of crank to deck height or to lose original stamping) are circular. your broach marks are straight. To me that original.
Good luck with what every you do.

**gmc 2500 4x4** · 05-04-2024, 08:38 AM

Old post, would someone know what the kx is for T0927TKX

**1970cstblazer** · 05-04-2024, 09:41 AM

TKX 1972 Truck 402CID 210NHP TH400 L-47 Series 20, 30

T- Tonawanda engine assembly plant
09=September
27=day

**gmc 2500 4x4** · 05-04-2024, 09:48 AM

What letters make it a72.?

**1970cstblazer** · 05-04-2024, 09:54 AM

The TKX code is a 1972 model year code assembled 9/27/71.

**gmc 2500 4x4** · 05-04-2024, 09:58 AM

Thanx, just trying to get a manufacture date for a valve cover decal that is being reproduced on here

01-21-2009, 02:46 PM	#26
hilandr452 Registered User Join Date: Jan 2009 Location: Colorado Springs, CO Posts: 357	Re: engine assembly code OK, what you're saying is that it just doesn't come on trucks? Don't flame me, I'm just trying to clarify. __________________ Dan Smith Colorado Springs, CO 71 GMC Custom Camper "Longhorn" 454, TH400 73 Chevy Camper Special (Yes, it's badged a camper special) Flat Bed Motorhome conversion 454, standard tranny *"DON'T TREAD ON ME !!!"* My Project: http://www.picturetrail.com/sfx/album/view/20829244 , http://www.picturetrail.com/sfx/album/view/24654442

01-21-2009, 02:55 PM	#27
sameyrasmea72 Senior Member Join Date: Aug 2003 Location: Lubbock, Texas Posts: 2,443	Re: engine assembly code I am just saying the info you already have is just about all the info you are going to get. There is not a for sure 100% guarentee way to tell if a 67-72 chevy truck has the original engine or not because THERE IS NO VIN # ANYWHERE ON A TRUCK MOTOR. __________________ 72 Cheyenne Super 80 Silverado Blazer 2wd

01-21-2009, 04:05 PM	#30
sameyrasmea72 Senior Member Join Date: Aug 2003 Location: Lubbock, Texas Posts: 2,443	Re: engine assembly code I did not mean to shout. I was just trying to get to the point that Stope and Clay and others made earlier in the thread. __________________ 72 Cheyenne Super 80 Silverado Blazer 2wd

01-21-2009, 04:07 PM	#31
hilandr452 Registered User Join Date: Jan 2009 Location: Colorado Springs, CO Posts: 357	Re: engine assembly code Thanks for the info, I'm satisfied this is the original motor. Dan __________________ Dan Smith Colorado Springs, CO 71 GMC Custom Camper "Longhorn" 454, TH400 73 Chevy Camper Special (Yes, it's badged a camper special) Flat Bed Motorhome conversion 454, standard tranny *"DON'T TREAD ON ME !!!"* My Project: http://www.picturetrail.com/sfx/album/view/20829244 , http://www.picturetrail.com/sfx/album/view/24654442

01-21-2009, 04:10 PM	#32
sameyrasmea72 Senior Member Join Date: Aug 2003 Location: Lubbock, Texas Posts: 2,443	Re: engine assembly code I was going to say that I would be very confident that your engine is the original one. Too many things line up for it not to be. __________________ 72 Cheyenne Super 80 Silverado Blazer 2wd

01-21-2009, 05:41 PM	#33
hilandr452 Registered User Join Date: Jan 2009 Location: Colorado Springs, CO Posts: 357	Re: engine assembly code This truck was a nice find. I've been dreaming about one of these since I was a kid. __________________ Dan Smith Colorado Springs, CO 71 GMC Custom Camper "Longhorn" 454, TH400 73 Chevy Camper Special (Yes, it's badged a camper special) Flat Bed Motorhome conversion 454, standard tranny *"DON'T TREAD ON ME !!!"* My Project: http://www.picturetrail.com/sfx/album/view/20829244 , http://www.picturetrail.com/sfx/album/view/24654442

09-10-2009, 05:17 PM	#34
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,880	Re: engine assembly code FYI, My 72 engine code is T1221TLM and my truck was assembled January 5, 1972 (from Build-Sheet). The "T" stands for Tonowanda, the 1221 stands for December (12), 21st (21) and the TLM is the correct code for a 72 402 with A/T and smog pump. By the way, my Protect-o-plate has the T1221TLM stamped in it. That's as close as you get to "Numbers-Matching" in these trucks. Did your look for the Protect-o-plate?

09-10-2009, 10:51 PM	#35
roger0080 Registered User Join Date: Nov 2000 Location: Carver County, Minnesota, USA Posts: 626	Re: engine assembly code You would need the protect-o-plate that came with the truck to determine that. Chevrolet protect-o-plates have the engine number stamped on the POP to match the engine. But it seems that GMC would just say the engine size like "400" for a 396/400/402 and not have the stamped engine number on it on the POP. So even if you had the POP for it, it wouldn't have the engine number on it. This is all from memory so it may not be 100% correct. __________________ 72 Chev C-10 90% restored (former AZ truck) ... 71 Chev K-20 Cheyenne my vacation crusier... 72 Chev C-10 Now retired and striped after many faithful miles... 72 GMC 1500 Retired to the junk yard after bought new in '71...

05-04-2024, 08:38 AM	#37
gmc 2500 4x4 Senior Member Join Date: Mar 2012 Location: ripley ny Posts: 2,894	Re: engine assembly code Old post, would someone know what the kx is for T0927TKX

05-04-2024, 09:41 AM	#38
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,343	Re: engine assembly code TKX 1972 Truck 402CID 210NHP TH400 L-47 Series 20, 30 T- Tonawanda engine assembly plant 09=September 27=day __________________ 1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress... 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels

05-04-2024, 09:48 AM	#39
gmc 2500 4x4 Senior Member Join Date: Mar 2012 Location: ripley ny Posts: 2,894	Re: engine assembly code What letters make it a72.?

05-04-2024, 09:54 AM	#40
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,343	Re: engine assembly code The TKX code is a 1972 model year code assembled 9/27/71. __________________ 1970 K/5 Blazer CST 4WD, Bronze, 93k ACT. miles, 350, 4 speed, positraction, 16.5" x 8.25" wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration in progress... 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 41k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 60k miles, 3.6, 8L45, 3.23 LS, 18" wheels

05-04-2024, 09:58 AM	#41
gmc 2500 4x4 Senior Member Join Date: Mar 2012 Location: ripley ny Posts: 2,894	Re: engine assembly code Thanx, just trying to get a manufacture date for a valve cover decal that is being reproduced on here



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