Author Topic: Block stamp  (Read 2548 times)

jimbo67rag

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Block stamp
« on: November 19, 2016, 12:08:03 AM »
I have been able( thanks to this site) to determine that my block stamp decodes to (3956618) 68-79 302 4 bolt, 327, 350 4 bolt. Can I determine further just which of these three it is from this stamp? If not what is my next step to finding out the true cid of this engine please. And thank you.

RAfbody

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Re: Block stamp
« Reply #1 on: November 19, 2016, 01:00:22 AM »
According to Colvin's Chevrolet by the Numbers book, this block was only used from approximately January 1969 through April 1969 in both 2 and 4 bolt main configurations. The 4 bolt blocks were known to have been used in 350 and 302 engines. Look at the crank flywheel flange to determine what the crank is. Also look at the stamp pad in front of the passenger head for the stamped assembly date and code. Post any information you find there.
Russ

jimbo67rag

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Re: Block stamp
« Reply #2 on: November 19, 2016, 01:53:10 AM »
Thanks RAFbody. The stamp in front of the pass side head is not very prominent maybe from a deck job. But I ca make out 191037134   The second 1 could be an I and the 3's could be 8's. On the same face is a K05. The K is for sure the 05 is a guesstimate. Thanks.

jimbo67rag

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Re: Block stamp
« Reply #3 on: November 19, 2016, 01:55:00 AM »
Sorry what am I looking for at the crank flywheel flange?

bertfam

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Re: Block stamp
« Reply #4 on: November 19, 2016, 02:04:33 AM »
Can you post a high res picture of the stamp?

Ed
Ed "Bert" Bertrand
email me!

jimbo67rag

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Re: Block stamp
« Reply #5 on: November 19, 2016, 02:05:35 AM »
I can try Bert.

z28z11

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Re: Block stamp
« Reply #6 on: November 19, 2016, 02:17:45 AM »
Sorry what am I looking for at the crank flywheel flange?

You can tell from the shape of the flange what build configuration the engine was, either 327, 350 or 302. Chevrolet by the Numbers has an excellent crank identification section by flange shape -

Regards,
Steve
1968 Z28 M21/U17 BRG/W
1969 Z28 X77/M20/VE3 LeMans/W
1969 L78 X66/N66 Cortez/BVT
1969 Z11 L48/M35/C60/C06

jimbo67rag

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Re: Block stamp
« Reply #7 on: November 19, 2016, 02:31:44 AM »
Thanks Steve. I guess I would either have towing this book or maybe it is online?

jimbo67rag

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Re: Block stamp
« Reply #8 on: November 19, 2016, 02:32:57 AM »
Thanks Steve. I guess I would have to try and find this book or maybe it is online?

jimbo67rag

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Re: Block stamp
« Reply #9 on: November 19, 2016, 02:38:07 AM »
I will have to find this book at a book store Steve. Access to Chevrolet by the numbers is not available on line.

jimbo67rag

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Re: Block stamp
« Reply #10 on: November 19, 2016, 02:43:30 AM »
I am not computer savy enough to post a pic on here Bert. The stamp on the block in front of the pass side head reads.   1910?71?4.  It looks like 1910371?4. That is about the best I can do.

RAfbody

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Re: Block stamp
« Reply #11 on: November 19, 2016, 03:40:06 AM »
Send the picture to me in an email if you want and I will try to help.
rafbody@aol.com
Russ

jimbo67rag

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Re: Block stamp
« Reply #12 on: November 19, 2016, 03:50:44 AM »
This is the best photo I could send ! Help

jimbo67rag

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Re: Block stamp
« Reply #13 on: November 19, 2016, 04:04:31 AM »
Anyone have any idea what this block is?

69Z28-RS

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Re: Block stamp
« Reply #14 on: November 19, 2016, 04:10:18 AM »
That must be from the St Therese (Canada) assembly plant - a passenger car engine...  either a 327 or 350 ci assembled also in Canada (St Catherine's engine plant).   The 'Kxxxxxyy' is an engine assembled in the St Catherine's engine plant...

ie. VIN of  1 9 1 037134    a 1969 model year passenger car; St Catherine's engine assembly; date/appcode undecipherable...

1969 VIN Assembly Plants
Letter Code   Assembly Plant   Body Type
A   Atlanta, Georgia   Chevelle
B   Baltimore, Maryland   Chevelle **
C   Southgate, California   Pass
D   Doraville, Georgia   Pass
F   Flint, Michigan   Pass
G   Framingham, Massachusetts   Chevelle
J   Janesville, Wisconsin   Pass
K   Kansas City, Missouri   Chevelle **
L   Los Angeles, California   Pass, Camaro
N   Norwood, Ohio   Camaro
R   Arlington, Texas   Pass
S   St. Louis, Missouri   Pass, Corvette
T   Tarrytown, New York   Pass
U   Lordstown, Ohio   Pass
W   Willow Run, Michigan   Chevy II
Y   Wilmington, Delaware   Pass
Z   Fremont, California   Chevelle **
0   Oshawa, Canada   Pass, Chevelle
1   St. Therese, Canada   Pass


Code   Engine Plant      Code   Engine Plant
F   Flint (Motor)             S   Saginaw Service
H   Hydramatic             T   Tonawanda
K   St. Catherines, Ontario      V   Flint (Engine)
(McKinnon Industries Canada)
M   GM of Mexico
« Last Edit: November 19, 2016, 04:45:33 AM by 69Z28-RS »
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