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09-29-2015, 01:55 PM
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#1 |
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Registered User
Join Date: Aug 2015
Location: Scotland
Posts: 737
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Engine Size
What is the best way to confirm the size of the small block fitted in my truck?
I thought the casting number would do that and I was finally I able to get. That when I took the engine out today. The casting number is 3970010 with a GM 21 also visible, but from the information I can find its either a 302, 327 or a 350. Can I narrow it down futher? Last edited by MacQuigley; 09-29-2015 at 02:28 PM. |
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09-29-2015, 01:57 PM
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#2 |
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Senior Member
 
Join Date: Jan 2011
Location: Hayes Va
Posts: 4,569
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Re: Engine Size
Look on the pad in front of the right cylinder head. Should have a series of numbers and letters. That is what will tell you what is started life as.
Jimmy
__________________
60 to 66 Chevy and GMC window decals http://67-72chevytrucks.com/vboard/s...d.php?t=661131 Good friends, good food and a hotrod what else do you need? 1966 BBW long fleet Daily driver 1965 BBW short fleet Sold and going to a good home 1965 Suburban 2003 3500 Duramax 2005 Ultra Classic |
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09-29-2015, 02:29 PM
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#3 |
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Registered User
Join Date: Aug 2015
Location: Scotland
Posts: 737
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Re: Engine Size
Thanks Jimmy. I'll check that out in the morning.
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09-30-2015, 01:44 PM
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#4 |
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Registered User
Join Date: Aug 2015
Location: Scotland
Posts: 737
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Re: Engine Size
Checked for the number in front of the head this morning put after removing the paint it looks like the block has been machined as its perfectly smooth there with no numbers.
So I checked the head casting numbers which are 333882 which indicate a 350. If I combine that with the 3970010, which according to the latest book Ive consulted is a 350, then with the 2 together Im reasonably confident that I do have a 350. I guess I wont know for sure until I strip it. |
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