can you de-code this engine

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Jan 12, 2010 | 06:48 PM

vettedad61

Thread Starter

Racer

Joined: Jan 2006

Posts: 344

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can you de-code this engine

I am considering buying it for my 61 vette
The number on the right front of the block is F0118
the engine casting number is 3789935
the numbers on the right side back area are A1720

any help or input will be appreciated

Thanks Scott

Jan 12, 2010 | 07:10 PM

knight37128

Le Mans Master

Joined: Feb 2006

Posts: 6,048

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From: "cutesy" TN

3789935 = very late 1961 283 block
F0118 = Flint January 18th

A1720
A = January
17 = the day of the month
20 = ?????? check again This should only be a "1" as in the year (1961)

Jan 12, 2010 | 07:16 PM

vettedad61

Thread Starter

Racer

Joined: Jan 2006

Posts: 344

Likes: 2

is it for a corvette? why late 61 if the date is jan 1961 (1st month of 1961)
Thanks
It is a complete running motor, but skips need rebuild...he is asking $250.00

Jan 12, 2010 | 07:51 PM

jtranger

Melting Slicks

Joined: Nov 2006

Posts: 2,617

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From: Anaheim California

When was your car built? The 3756519 is the better and more popular block for that year.

Jan 13, 2010 | 12:57 PM

JohnZ

Team Owner

Joined: Oct 2000

Posts: 38,897

Likes: 1,925

From: Washington Michigan

Quote:

Originally Posted by vettedad61

I am considering buying it for my 61 vette
The number on the right front of the block is F0118
the engine casting number is 3789935
the numbers on the right side back area are A1720

any help or input will be appreciated

Thanks Scott

You're missing digits on the pad stamp; there should be at least one letter (or two) after the F0118.

Check the casting date again - it should be A 17 2.

That casting number is only correct for a very late '61 (built after March or so).

Jan 13, 2010 | 01:29 PM

vettedad61

Thread Starter

Racer

Joined: Jan 2006

Posts: 344

Likes: 2

My 61 was built May 24, 1961. it know has a 350 but want to get a close to correct engine to build factory specs over time. this engine is on craigslist and skips but complete and wants 250.00 for it. is it the right engine to do for my 61 to be close to correct?

I know it's not number matching and never will be but my 61 isn't going for NRCS either.

Jan 13, 2010 | 02:39 PM

Frankie the Fink

Team Owner

Joined: Aug 2007

Posts: 58,061

Likes: 7,145

Army

Interesting...my '61 rolled out on May 18th...about a week before yours and has the
3756519 block. Could that make this the very week they switched off to the 'very late'
3789935 block ? The date at the rear of my block is: D271 = April 27th, 1961.

You should not have a '2' at the end of your date and absolutely not have '20'! NCRS allows a 6 month window so if its
a Jan '61 block its fine for your car PROVIDING you get the last letters off the stamp pad suffix (and they are correct for 1961; must be either: CQ, DG, CT, DJ, CR, CU or CS) and the date issue above is cleared up.

Jan 14, 2010 | 12:35 PM

JohnZ

Team Owner

Joined: Oct 2000

Posts: 38,897

Likes: 1,925

From: Washington Michigan

Quote:

Originally Posted by fdreano

You should not have a '2' at the end of your date and absolutely not have '20'!

I should clarify what I meant. He indicated that there was a "20" at the end of the casting date, and most likely what he saw was a "2" followed by a screw-head impression, not a "0". In any case, that's after his car was built, and would get a 175-point deduction.