Extra Engine - The 1947 - Present Chevrolet & GMC Truck Message Board Network

etg · 01-10-2011, 07:37 PM

Hey all, a neighbor of mine has a c20 just like mine but in better condition. A couple of months ago his engine seized up and he had to park it. He got another 350 block in it and decided to give me the old block. I took it because I want to learn how to dismantle it and learn all the inner workings first hand, without destroying my own 350 block. I was just wondering what kind of info I could figure out from the numbers on the block. Any input helps.

Here's what's stamped on the block:
GM 3970010
15k106215
v1018crx

Intake manifold:
3927183

In between the valve springs:
333882

So my plan is to just take it all apart and eventually sell it or get it machined and sell it. Is this engine common?

butters_72 · 01-10-2011, 07:59 PM

GM 3970010= yrs made 68 - 79. size 350 & 327 H.P.Range 145-375 2&4-Bolt mains/Truck/Hi Perf

head numbers 333882 yrs made 70-80, valve size 1.94/1.50 H.P. range 150-180
76CC Chambers
Intake flow 137.2 CFM
Exhaust flow 95.4 CFM

intake numbers: 3927183 2BBL Rochester yr 1969, size 307 200Hp
327 210Hp

found all that at this site: www.thedirtforum.com/castings.htm

etg · 01-10-2011, 08:16 PM

wow thanks for that write up butters.

butters_72 · 01-10-2011, 08:18 PM

no worries good luck

gkesseru · 01-10-2011, 09:43 PM

the 3970010 block is the high nickel one used in Corvettes, trucks, and boat engines. Good block, usually but not always 4 bolt.

01-10-2011, 07:37 PM	#1
etg Registered User Join Date: Apr 2006 Location: San Diego Posts: 147	Extra Engine Hey all, a neighbor of mine has a c20 just like mine but in better condition. A couple of months ago his engine seized up and he had to park it. He got another 350 block in it and decided to give me the old block. I took it because I want to learn how to dismantle it and learn all the inner workings first hand, without destroying my own 350 block. I was just wondering what kind of info I could figure out from the numbers on the block. Any input helps. Here's what's stamped on the block: GM 3970010 15k106215 v1018crx Intake manifold: 3927183 In between the valve springs: 333882 So my plan is to just take it all apart and eventually sell it or get it machined and sell it. Is this engine common?

01-10-2011, 07:59 PM	#2
butters_72 Registered User Join Date: Dec 2010 Location: Geyserville CA Posts: 18	Re: Extra Engine GM 3970010= yrs made 68 - 79. size 350 & 327 H.P.Range 145-375 2&4-Bolt mains/Truck/Hi Perf head numbers 333882 yrs made 70-80, valve size 1.94/1.50 H.P. range 150-180 76CC Chambers Intake flow 137.2 CFM Exhaust flow 95.4 CFM intake numbers: 3927183 2BBL Rochester yr 1969, size 307 200Hp 327 210Hp found all that at this site: www.thedirtforum.com/castings.htm __________________ [B][COLOR="Navy"]BUTTERS 72 Chevy longbed C-10 72 Chevy 4x4 Longbed

01-10-2011, 08:16 PM	#3
etg Registered User Join Date: Apr 2006 Location: San Diego Posts: 147	Re: Extra Engine wow thanks for that write up butters.

01-10-2011, 08:18 PM	#4
butters_72 Registered User Join Date: Dec 2010 Location: Geyserville CA Posts: 18	Re: Extra Engine no worries good luck __________________ [B][COLOR="Navy"]BUTTERS 72 Chevy longbed C-10 72 Chevy 4x4 Longbed

01-10-2011, 09:43 PM	#5
gkesseru Registered User Join Date: Dec 2009 Location: California, Maryland Posts: 544	Re: Extra Engine the 3970010 block is the high nickel one used in Corvettes, trucks, and boat engines. Good block, usually but not always 4 bolt. __________________ 72 Fleet (died) 78 Step (sold) 55 Step named Fred (sold) 00 F150 68 Step (named El Scorcho by PO) Build thread for the new El Scorcho http://67-72chevytrucks.com/vboard/s...d.php?t=392932



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