Engine Casting number identifications - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Radical Cam · 07-09-2002, 09:06 PM

Can anybody tell me what size this motor is the casting number on the back of the block is 3970010 but that number could mean that it is an assortment of different motors the number that is in front of the head is K04 24 TBB . If anyone can tell me what this motor is I would appreciate it. I think that it is a 327 because the heads are off a 62-64 327 but I am not sure about the block.

lux hauler · 07-09-2002, 09:15 PM

Look here.........
http://67-72chevytrucks.com/vboard/s...threadid=17201

**68 Stepside** · 07-09-2002, 09:46 PM

If you haven't figured it out already, it's one of the following:
1956 TBB 265 a/t 155 2 truck/3800
1970 TBB 350 cv/fd cab, m/t 3sp 255 4 C-10 to 3500
1979 TBB 350 convcab,m/t, fed L LS9 165 4 C-10 to 2500

TJ

Hooter · 07-10-2002, 03:10 AM

that is the exact number on my 300 horse 4 bolt main 350 in my monte. 3970010 could either be a 2 bolt main 350 or a 4 bolt main 350 (69-79 chevrolet, chevelle monte carlo and truck)

**COBALT** · 07-10-2002, 11:59 AM

Yes, you have the typical 69-80 350 that many of us have. Mine turned out to be a 1980 350. The key is narrowing it down with the stamped code and the casting date.

The "K" tells you it was produced in St. Catherines, Ontario (McKinnon Industries Canada), on April 24th.

You could get the last digit of the year (hopefully a "0" or a "9" for 1970 or 1979) by finding the casting date next to the casting number. It should look something like "D249" if it was April 24th 1979, or "D240" for April 24th 1970.

WB72 · 07-10-2002, 12:00 PM

Try this site,

http://www.nastyz28.com/sbcmenu.html

I has all casting numbers for Blocks and Heads

07-09-2002, 09:06 PM	#1
Radical Cam Registered User Join Date: Nov 2001 Location: Oakbank Manitoba Canada Posts: 73	Engine Casting number identifications Can anybody tell me what size this motor is the casting number on the back of the block is 3970010 but that number could mean that it is an assortment of different motors the number that is in front of the head is K04 24 TBB . If anyone can tell me what this motor is I would appreciate it. I think that it is a 327 because the heads are off a 62-64 327 but I am not sure about the block.

07-09-2002, 09:15 PM	#2
lux hauler Psycho-billy Member Join Date: Jul 2001 Location: about 40 miles west of Cleveland, Ohio Posts: 2,591	Look here......... http://67-72chevytrucks.com/vboard/s...threadid=17201 __________________ '72 C-10 350 w/Lunati Voodoo cam (207/213, .437/.454), Performer intake, 625 Road Demon Jr. and Hooker headers. Support your community, support yourself. Buy local, buy American (or Canadian).

07-09-2002, 09:46 PM	#3
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,690	If you haven't figured it out already, it's one of the following: 1956 TBB 265 a/t 155 2 truck/3800 1970 TBB 350 cv/fd cab, m/t 3sp 255 4 C-10 to 3500 1979 TBB 350 convcab,m/t, fed L LS9 165 4 C-10 to 2500 TJ __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

07-10-2002, 03:10 AM	#4
Hooter My other Love Join Date: Aug 2001 Location: Castlegar B.C. Canada Posts: 4,085	that is the exact number on my 300 horse 4 bolt main 350 in my monte. 3970010 could either be a 2 bolt main 350 or a 4 bolt main 350 (69-79 chevrolet, chevelle monte carlo and truck) __________________ Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life

07-10-2002, 11:59 AM	#5
COBALT Senior Member Join Date: Sep 2001 Location: Seattle, WA, USA Posts: 5,817	Yes, you have the typical 69-80 350 that many of us have. Mine turned out to be a 1980 350. The key is narrowing it down with the stamped code and the casting date. The "K" tells you it was produced in St. Catherines, Ontario (McKinnon Industries Canada), on April 24th. You could get the last digit of the year (hopefully a "0" or a "9" for 1970 or 1979) by finding the casting date next to the casting number. It should look something like "D249" if it was April 24th 1979, or "D240" for April 24th 1970. __________________ '69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA.

07-10-2002, 12:00 PM	#6
WB72 Before and After Join Date: Feb 2000 Location: Leduc, Alberta CANADA Posts: 632	Try this site, http://www.nastyz28.com/sbcmenu.html I has all casting numbers for Blocks and Heads __________________ Not Grandpa's C-20 anymore... 383 Stroker 425HP, 485Ft/Lbs Lowered 3.5" Front / 5" Rear 66,000 miles. Alberta, CANADA

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