engine block ID 305 or 350 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

chris989 · 01-01-2019, 05:06 PM

Hello,

Can anyone tell me waht a 1401020 block is. It does not have the last digit. Where the digit would be is a round bump with a slot in it. Like a straight screw head.

a 1401020 with a 1,2 or 3 is a 305.
a 1401020 with a 7 or 9 is a 350.

Any ideas?
Chris

**Getter-Done** · 01-01-2019, 05:14 PM

Can you read this Id on the block?
Name: sb11.jpg
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chris989 · 01-01-2019, 09:30 PM

really tough, i will need to remove the alt.

i can make in out in larger numbers ?07?C
beneath that and smaller ??2221???

**Getter-Done** · 01-01-2019, 09:33 PM

If you take the time to pull the Alt.
This website will help you.
http://www.nastyz28.com/sbchevy/sblock.html

chris989 · 01-01-2019, 09:37 PM

thanks,

01-01-2019, 05:06 PM	#1
chris989 Registered User Join Date: Dec 2011 Location: Boise, Idaho Posts: 555	engine block ID 305 or 350 Hello, Can anyone tell me waht a 1401020 block is. It does not have the last digit. Where the digit would be is a round bump with a slot in it. Like a straight screw head. a 1401020 with a 1,2 or 3 is a 305. a 1401020 with a 7 or 9 is a 350. Any ideas? Chris

01-01-2019, 05:14 PM	#2
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 7,724	Re: engine block ID 305 or 350 Can you read this Id on the block? __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

01-01-2019, 09:30 PM	#3
chris989 Registered User Join Date: Dec 2011 Location: Boise, Idaho Posts: 555	Re: engine block ID 305 or 350 really tough, i will need to remove the alt. i can make in out in larger numbers ?07?C beneath that and smaller ??2221???

01-01-2019, 09:33 PM	#4
Getter-Done Senior Member Join Date: Dec 2009 Location: TN. Posts: 7,724	Re: engine block ID 305 or 350 If you take the time to pull the Alt. This website will help you. http://www.nastyz28.com/sbchevy/sblock.html __________________ ________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build

01-01-2019, 09:37 PM	#5
chris989 Registered User Join Date: Dec 2011 Location: Boise, Idaho Posts: 555	Re: engine block ID 305 or 350 thanks,



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