Looking at the chart on this site with my casting code Julian date of 262. Looks like the 19th day of September?? Where am I missing what year it is? 
690 Julian Date Question
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Looking at the chart on this site with my casting code Julian date of 262. Looks like the 19th day of September?? Where am I missing what year it is?
Wouldn't that be Feb 06 62.........????.....no I see it...........
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Thanks Phil. I read that but thought there was some way to get closer. Thanks.
My heads have the Julian date of 119. I was thinking this meant they are from April 29, 1963. Could they be either 62 or 63 heads as well?
No........1962 production parts did not have Julian dates.....that started in Aug (give or take) 1962 for 1963 production parts.
Thank you Phil. I guess at some point some of you already told me this since I had them listed as from 1963......I just couldn't remember it. 
Good info Ron, thanks! Does anyone know the last day (week? month?) of 814 block production and the switch to the 422 casting? You think any 422 blocks ended up in late ‘63 cars? I think I have an early production ‘64 400hp engine. 422 block, 122 (May 2) Julian date, 690 heads, one is 119 (April 30) and the other is 40 (February 9). The guy I got this engine from swears he pulled it out of a 63 bel air. I questioned him asking are you sure it wasn’t a 64?? He had no pics, going off 40 year old memories, and he isn’t a numbers geek like I am. Years, codes, dates etc. don’t mean anything to him. Supposedly it was original to that car, and he told me it got T-boned and parted out in the mid 70’s in Pueblo. He bought the engine and everything he needed to put it in the 63 Biscayne that I bought from him. Same guy decked the block too so the numbers are gone
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TempleofZoom
Member
Good info Ron, thanks! Does anyone know the last day (week? month?) of 814 block production and the switch to the 422 casting? You think any 422 blocks ended up in late ‘63 cars? I think I have an early production ‘64 400hp engine. 422 block, 122 (May 2) Julian date, 690 heads, one is 119 (April 30) and the other is 40 (February 9). The guy I got this engine from swears he pulled it out of a 63 bel air. I questioned him asking are you sure it wasn’t a 64?? He had no pics, going off 40 year old memories, and he isn’t a numbers geek like I am. Years, codes, dates etc. don’t mean anything to him. Supposedly it was original to that car, and he told me it got T-boned and parted out in the mid 70’s in Pueblo. He bought the engine and everything he needed to put it in the 63 Biscayne that I bought from him. Same guy decked the block too so the numbers are gone
I have a 422 block stamped T0425, 100 Julian date, that I know for absolute certainty came out of a 1963. At the end of the day it personally means nothing to me what year car the motor was originally born with. I learned a long time ago to just let the experts be the experts.
What’s TO425, April 25th? Cast on April 11? Thanks for the info! What’s the vin?
I have another 422 block that I’m pretty darn sure is an early 64. Julian is 163 (June 11), the assembly code is T1001QC (Oct. 1) and the vin is pretty low, F118754. Anyone else?
I have another 422 block that I’m pretty darn sure is an early 64. Julian is 163 (June 11), the assembly code is T1001QC (Oct. 1) and the vin is pretty low, F118754. Anyone else?
Here's a little more info from the 1946 to 1964 Parts Catalog :
0.033 Block Assembly, Cylinder
Partial Engine
62 Pass (409), 63-64 Pass w/H/Per., dual 4BC (409) (1st design) (exc. RPO
Z11)......................................................... 3839753 (cast 3844422) (Note 8)*
Note 8: Contains (1st design) camshaft 3830690
63-64 Pass. (409) (exc. H/Per., dual 4BC, RPO Z11)............3839755 (cast
3830814)
64 Pass. w/H/Per., dual 4BC (409) (2nd design)...................3865807 (cast
3844422)
Fitted Cylinder Block
62-64 Pass. w/H/Per., dual 4BC (409)...................................3839752 (cast
3844422)
63-64 Pass.(409) (exc. H/Per., dual 4BC)..............................3839754 (cast
3830814
0.269 Head Cylinder
61-64 Pass., w/H/Per., dual 4BC (409) (exc. RPO Z 11)........3852582 (ident. No.
3852583) (Note 8,9)
Note 8: Used only with camshaft 3830690, valve spring-3817277 and shim-3853875 on 1964 models with engine date stamps prior to T1118QA and T1118QB. Used only with camshaft 3837735 and valve spring- 3858367 on 1964 models with engine date stamps subsequent to T1118QA and T1118QB. It is necessary to use shim 3853875 on 61 to 63 models.
For further information refer to Chevrolet Service News Volume 36, No. 6, June, July 1964.
Note 9: Do not use on early design 1961 (409) engines.
0.519 Camshaft
61-62 Pass. (409),
63-64 Pass. w/H/Per. dual 4BC (409) (1st design) (exc. RPO Z
11........................................................................3830690 (Ident. No.
3822930) Use only on engines prior to T1118.
63 Sport Coupe (RPO Z 11),
64 Pass. w/H/Per. dual 4BC (409) (2nd design)............3837735 (Ident. No. 7736)
Use only with engines subsequent to T1118.
This catalog was printed in 1974 indicating that either 814 and 422 blocks were still being cast for service or there were left over blocks from production still available for service. Since the 656 block was the last production casting made which should be available for service and there is no mention of it in this catalog, it seems likely that these are left over blocks from 63-64.
Notes 8 and 9 above seem to establish the change over date of 11-18-63 for the Z 11 cam use in 64 production solid lifter engines requiring 583 heads with different valve springs.
Does anyone have the Chevrolet Service News issue from June/July 64? It should give more info on the engine changes.
This also seems to indicate that both the 814 and 422 blocks were used simultaneously at least during some production overlap. I recall an article by Curt Harvey in an old magazine article that indicated the 814 and 422 blocks were both used in 63 and 64.
Cecil
0.033 Block Assembly, Cylinder
Partial Engine
62 Pass (409), 63-64 Pass w/H/Per., dual 4BC (409) (1st design) (exc. RPO
Z11)......................................................... 3839753 (cast 3844422) (Note 8)*
Note 8: Contains (1st design) camshaft 3830690
63-64 Pass. (409) (exc. H/Per., dual 4BC, RPO Z11)............3839755 (cast
3830814)
64 Pass. w/H/Per., dual 4BC (409) (2nd design)...................3865807 (cast
3844422)
Fitted Cylinder Block
62-64 Pass. w/H/Per., dual 4BC (409)...................................3839752 (cast
3844422)
63-64 Pass.(409) (exc. H/Per., dual 4BC)..............................3839754 (cast
3830814
0.269 Head Cylinder
61-64 Pass., w/H/Per., dual 4BC (409) (exc. RPO Z 11)........3852582 (ident. No.
3852583) (Note 8,9)
Note 8: Used only with camshaft 3830690, valve spring-3817277 and shim-3853875 on 1964 models with engine date stamps prior to T1118QA and T1118QB. Used only with camshaft 3837735 and valve spring- 3858367 on 1964 models with engine date stamps subsequent to T1118QA and T1118QB. It is necessary to use shim 3853875 on 61 to 63 models.
For further information refer to Chevrolet Service News Volume 36, No. 6, June, July 1964.
Note 9: Do not use on early design 1961 (409) engines.
0.519 Camshaft
61-62 Pass. (409),
63-64 Pass. w/H/Per. dual 4BC (409) (1st design) (exc. RPO Z
11........................................................................3830690 (Ident. No.
3822930) Use only on engines prior to T1118.
63 Sport Coupe (RPO Z 11),
64 Pass. w/H/Per. dual 4BC (409) (2nd design)............3837735 (Ident. No. 7736)
Use only with engines subsequent to T1118.
This catalog was printed in 1974 indicating that either 814 and 422 blocks were still being cast for service or there were left over blocks from production still available for service. Since the 656 block was the last production casting made which should be available for service and there is no mention of it in this catalog, it seems likely that these are left over blocks from 63-64.
Notes 8 and 9 above seem to establish the change over date of 11-18-63 for the Z 11 cam use in 64 production solid lifter engines requiring 583 heads with different valve springs.
Does anyone have the Chevrolet Service News issue from June/July 64? It should give more info on the engine changes.
This also seems to indicate that both the 814 and 422 blocks were used simultaneously at least during some production overlap. I recall an article by Curt Harvey in an old magazine article that indicated the 814 and 422 blocks were both used in 63 and 64.
Cecil