Can someone ID this block and heads? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DHregdovic · 05-05-2002, 05:14 PM

I just got my motor to put into my '67 and would like for someone to check the numbers for me. Time to finally swap out the 250...

The block casting has: 19 GM 3970010

The heads have: GM 54 3927186

The motor just came out of a friends 79 L-82 'vette but I don't think it's original. I do know that it runs very strong though.

Thanks ahead of time!!!

DHregdovic · 05-05-2002, 05:51 PM

BTW: there is no marking on the fron right of the motor (on the ID pad).

It appears the block had been decked and the numbers were taken off at that point.

Jim68 · 05-05-2002, 06:21 PM

Mortec.com has these listings
for the block:

3970010....302.....69....4...Z-28 Camaro
3970010....327.....69....2...Trucks and industrial
3970010....350...69-80...2 or 4

for the heads

3927186....69-70...302/350......Camel hump,64cc chambers,accessory holes

------------------
68 long fleetside C-10, '74 350, CH465 4-speed, Edelbrock Performer 1406 Carb, Hedman Hedders, 50 Series Flowmasters
Mesa, AZ

[This message has been edited by Jim68 (edited May 05, 2002).]

Longhorn Man · 05-05-2002, 06:25 PM

302...LOL, not likely.
You ever met anyone who stumbled on a 302?
My book, which has been proven wrong) only says 68 to 80 350.

And for the heads, the book says 68 to 79 350...trucks also.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

[This message has been edited by longhornmail (edited May 05, 2002).]

DHregdovic · 05-05-2002, 08:50 PM

Thanx guys.... I had someone notice something that I wouldn't have known about. There is a casting in the bell housing area that has 010 020. I'm told this makes it one of the high nickel content blocks. I wish the other numbers were on there. I'd really like to know what it came out of. It had a mfg casting number of B114 which I believe would make the motor from 2/11/74. Someone can correct me if I'm wrong though...

I'm open for suggestions if anybody knows another way to ID a block/heads...

Longhorn Man · 05-05-2002, 09:13 PM

Awsome...the high nickle blocks are awsome. You can go 100,000 miles and hardly have a ridge. My old 350 was a 10 20 casting, had 300K on the clock with only the main bearings replaced. That thing would hardly catch a finger nail on the ridge.
Your date decoding is right on too. The 4 coulda ment 64 or 84, but chances are, it's a 74 since there were no 350's in 64, and if it's an 84 it would have the dip stick on the passenger side.

------------------
'69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man
I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it.
FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite.
If you need a pic posted, E-mail me at longhornmail@yahoo.com
Andy, in Columbus Ohio

05-05-2002, 05:14 PM	#1
DHregdovic Registered User Join Date: Jan 2002 Location: Beaver County, PA Posts: 46	Can someone ID this block and heads? I just got my motor to put into my '67 and would like for someone to check the numbers for me. Time to finally swap out the 250... The block casting has: 19 GM 3970010 The heads have: GM 54 3927186 The motor just came out of a friends 79 L-82 'vette but I don't think it's original. I do know that it runs very strong though. Thanks ahead of time!!! __________________ 67 LWB GMC 250 inline w/4spd manual Disc/power brake conversion

05-05-2002, 05:51 PM	#2
DHregdovic Registered User Join Date: Jan 2002 Location: Beaver County, PA Posts: 46	BTW: there is no marking on the fron right of the motor (on the ID pad). It appears the block had been decked and the numbers were taken off at that point. __________________ 67 LWB GMC 250 inline w/4spd manual Disc/power brake conversion

05-05-2002, 06:21 PM	#3
Jim68 Registered User Join Date: Apr 2000 Location: Mesa, AZ Posts: 135	Mortec.com has these listings for the block: 3970010....302.....69....4...Z-28 Camaro 3970010....327.....69....2...Trucks and industrial 3970010....350...69-80...2 or 4 for the heads 3927186....69-70...302/350......Camel hump,64cc chambers,accessory holes ------------------ 68 long fleetside C-10, '74 350, CH465 4-speed, Edelbrock Performer 1406 Carb, Hedman Hedders, 50 Series Flowmasters Mesa, AZ [This message has been edited by Jim68 (edited May 05, 2002).] __________________ 68 long fleetside C-10, '74 350, CH465 4-speed, Edelbrock Performer 1406 Carb, Hedman Hedders, 50 Series Flowmasters Mesa, AZ

05-05-2002, 08:50 PM	#5
DHregdovic Registered User Join Date: Jan 2002 Location: Beaver County, PA Posts: 46	Thanx guys.... I had someone notice something that I wouldn't have known about. There is a casting in the bell housing area that has 010 020. I'm told this makes it one of the high nickel content blocks. I wish the other numbers were on there. I'd really like to know what it came out of. It had a mfg casting number of B114 which I believe would make the motor from 2/11/74. Someone can correct me if I'm wrong though... I'm open for suggestions if anybody knows another way to ID a block/heads... __________________ 67 LWB GMC 250 inline w/4spd manual Disc/power brake conversion

05-05-2002, 06:25 PM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	302...LOL, not likely. You ever met anyone who stumbled on a 302? My book, which has been proven wrong) only says 68 to 80 350. And for the heads, the book says 68 to 79 350...trucks also. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio [This message has been edited by longhornmail (edited May 05, 2002).]

05-05-2002, 09:13 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Awsome...the high nickle blocks are awsome. You can go 100,000 miles and hardly have a ridge. My old 350 was a 10 20 casting, had 300K on the clock with only the main bearings replaced. That thing would hardly catch a finger nail on the ridge. Your date decoding is right on too. The 4 coulda ment 64 or 84, but chances are, it's a 74 since there were no 350's in 64, and if it's an 84 it would have the dip stick on the passenger side. ------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio



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