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| | | | Joined: Feb 2013 Posts: 8 New Guy | | New Guy Joined: Feb 2013 Posts: 8 | I finally located the numbers struck onto the block and there were 2 sets of numbers.
They were stamped onto the passenger side (facing front of motor) on a ledge just infront of the valve cover.
It reads like so:
C5A146997 V0507TJH
From the info I could find after searching online I got the 2nd portion semi decoded from this site
http://www.thedirtforum.com/gmcastingnumberlocations.htm
V= Flint Plant
05 = May
07 =Day
T = Tonawanda Assembly Plant
but the JH part I couldnt find info on the site listed above
This site mentioned the suffix code on this page
http://www.nastyz28.com/gm-chevy-codes/chevy-engine-codes-suffix-7.php
but there were 2 entries for TJH and the years were 73 and 76, both showed a 350 type so I am pretty sure its a 350 but from what? Maybe it doesnt matter a bunch but as I try to get the transmission figured out it might be handy to know.
The 1st set of numbers "C5A146997", what is that exactly?
There was also a number on top of the engine right in front of the distributor
88766954
GM8
Trying to learn what these numbers are referring to and to double check my research and ask the pros here.
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | the C 5A number is probably a vin, indicating 1965 or 75, the TJH says it's a 350 from a C10 to a 3500 .... the 88766954 is a casting code, might further ID the year and 2 bolt or 4 bolt main, other differences are less important, check for any date codes shown the first page of the Z28 site .... and all that's meaningless for trans ID, any trans will bolt to a 350 Bill | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | vin numbering conventions changed a couple times from the 60's on, forget the stamped codes, it may be a rebuilt engine, it'd give more info to use casting numbers and the cast date codes to ID the block - main casting number will be on the bellhousing flange at the drivers side
Bill | | | | | Joined: Feb 2013 Posts: 8 New Guy | | New Guy Joined: Feb 2013 Posts: 8 | I couldnt get to it to read it so I took some plumbers putty and came up with an imprint that read http://i387.photobucket.com/albums/...ore%2066%20pics/DSC_0067_zps9d9afba6.jpg22GM <---the 22 was turned sideways next to the GM then the number 3970010 would the cast date code get me closer to knowing year and what this engine was from? | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | good trick, I use a mirror .... casting number 3970010 = 1968-1980 350ci, the T in the stamped suffix means truck [not Tonawanda, the V = Flint Engine assembly plant], and I believe all those were 4 bolt mains .... yes, a date code should narrow it down - should be near that casting number, or possibly on the other side, in the form 'letter[month], 2 numbers[day], 1 number[year]' - should also be date codes on heads under valve cover and usually on intakes
Bill | | | | | Joined: Feb 2013 Posts: 8 New Guy | | New Guy Joined: Feb 2013 Posts: 8 | | | |
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