Author Topic: Decode Help  (Read 30426 times)

ko-lek-tor

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Re: Decode Help
« Reply #30 on: July 14, 2015, 03:51:21 AM »
Thanks for the kind words.  I have not started a resto yet but I hope to soon.  I am in the process of researching what parts I need(alternator, master cylinder, etc).  I also hope to build a barn to do the resto in.
Most on here started the same way, so you are in good company. I too, have a 3E Nor. car with April components. Not a Pace Car. Sounds like you have a car worth taking care of and fixing up. Couple of friends, down here where I live, in Cincy area have unrestored pace cars and crowds flock to them passing up the shiny stuff...just something to consider. It is only original once. and thanks for coming back and being active, we need guys like you.
Bentley to friends :1969 SS/RS 396 owned 79
1969 SS 350 (sold)
1969 D.H.COPO replica 4spd. owned since 85
1967 302 4 spd 5.13

rjprice

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Re: Decode Help
« Reply #31 on: July 23, 2015, 02:00:43 PM »
A question about block castings.  I have a 618 block and the CRG website says: The 3956618 block was also used in mid-69 production and was cast at Flint.  My engine has a Tonowanda engine prefix.  Were some 618s cast at Tonowanda?

69Z28-RS

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Re: Decode Help
« Reply #32 on: July 23, 2015, 07:31:54 PM »
If your engine is the 618 casting from Tonawanda, then apparently they did..  :)
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KurtS

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Re: Decode Help
« Reply #33 on: July 27, 2015, 05:00:19 PM »
I'm not sure they were cast there. Apparently there was some exchange of blocks between the locations to ensure machining compatibility.

Does your block have the oil plug above the waterpump? It should have a square plug. See Pic #3 - http://www.camaros.org/pdf/flint_engine.pdf
Quote from JohnZ:
Flint engines (Saginaw castings) have the hole and plug and Tonawanda engines (Tonawanda castings) don't due to different machining processes for an intersection in the front of the main oil gallery; Flint tapped the hole and installed the 1/8" NPT plug after gun-drilling to create the gallery intersection at the end of the hole. 
Kurt S
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rjprice

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Re: Decode Help
« Reply #34 on: July 28, 2015, 01:53:24 AM »
I'm not sure they were cast there. Apparently there was some exchange of blocks between the locations to ensure machining compatibility.

Does your block have the oil plug above the waterpump? It should have a square plug. See Pic #3 - http://www.camaros.org/pdf/flint_engine.pdf
Quote from JohnZ:
Flint engines (Saginaw castings) have the hole and plug and Tonawanda engines (Tonawanda castings) don't due to different machining processes for an intersection in the front of the main oil gallery; Flint tapped the hole and installed the 1/8" NPT plug after gun-drilling to create the gallery intersection at the end of the hole. 

My engine does not have the plug.  I moved the alternator and did not see it.

69ssrag

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Re: Decode Help
« Reply #35 on: July 28, 2015, 11:32:17 PM »
My 618 casting Tonawanda stamped(T0512HA) motor does not have the plug.

KurtS

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Re: Decode Help
« Reply #36 on: July 29, 2015, 12:55:53 AM »
That's what I expect (since Tonawanda machined it), but it doesn't confirm if it's a Tonawanda or Saginaw casting.

Bergy or JohnZ,
Any ideas on how to tell where it was cast? The date formats are the same in 67-9.
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crobjones2

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Re: Decode Help
« Reply #37 on: July 29, 2015, 02:31:56 AM »
From my minimal experience - T cast lower right side of cam hole under timing cover represents Tonawanda  Possibly a T cast into the block under the fuel pump boss
Chris
69 SS 350

69ssrag

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Re: Decode Help
« Reply #38 on: July 29, 2015, 02:53:20 PM »
I will check for a T this evening.

69ssrag

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Re: Decode Help
« Reply #39 on: July 29, 2015, 04:28:10 PM »
I recall reading(maybe on this site?) that Tonawanda year cast date was 2 digits(69) and Saginaw was 1 digit(9).
I couldn't make out the cast date last time I checked but I will look at it again. 

dannystarr

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Re: Decode Help
« Reply #40 on: July 29, 2015, 05:00:38 PM »
69ssrag, Has this stamp you posted been certified real? Just curious the way the broaching looks. Danny

69ssrag

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Re: Decode Help
« Reply #41 on: July 29, 2015, 09:47:44 PM »
Yes, certified real original.

dannystarr

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Re: Decode Help
« Reply #42 on: July 29, 2015, 11:19:45 PM »
Awesome, just thought the broaching looking a little too smooth. Still learning... D

KurtS

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Re: Decode Help
« Reply #43 on: July 30, 2015, 04:55:54 AM »
Tonawanda often used two digits for the year, but not in 67-69.
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69ssrag

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Re: Decode Help
« Reply #44 on: July 30, 2015, 08:19:08 AM »
I couldn't find a T...so at this point, we don't know if it was cast at Saginaw and shipped to Tonawanda or cast and built at Tonawanda.