HIPO Heads date versus build date

Chris_old · September 16, 2009 at 1:37 PM

I have a 1966 that was shipped at the end of March 1966 and need a set of heads. How early of a date code would still be considered appropriate?

CharlesTurner · September 16, 2009 at 2:00 PM

I'd say no earlier than December '65.

s2ms · September 16, 2009 at 4:06 PM

My 66 has a late March San Jose scheduled build date. Both original heads are dated 6A31.

CMHawk_old · September 16, 2009 at 9:12 PM

My March of 65 Dearborn FB has heads dated 5A10 and a dizzy dated 5AA.

jwc66k · September 16, 2009 at 10:37 PM

It would also be appropiate for the date of the heads to be earlier than the engine assembly date stamped on the 'boss' near the distributor which is more accurate than the car's scheduled assembly date.

Jim

J_Speegle_old · September 16, 2009 at 11:49 PM

From a spread sheet I'm playing with here are some examples of spreads from San Jose cars, since the spread would be different IMHO different plants due to shipping distances

Oh - of course the build dates are the projected ones - off by up to three weeks in either direction

Build date...............Head date

19K........................K4

05C........................A31

10B........................M9 * M17

19B........................L15 & L15

Heads were not cast before for the blocks in all examples

Hope this helps

CharlesTurner · September 17, 2009 at 7:59 AM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

It would also be appropiate for the date of the heads to be earlier than the engine assembly date stamped on the 'boss' near the distributor which is more accurate than the car's scheduled assembly date.

Jim

Yes, totally agree with that. The engine assembly ought to be consistent with the inspector stamps on the block.

tater_51_old · September 17, 2009 at 8:40 AM

Chris, I have a set of 6B28 heads. If your interested you can e-mail me at ltatro@verizon.net.

Chris_old · September 17, 2009 at 10:54 AM

Thats was great guys-I am going to look at the date on the boss to double check but it looks like I should be looking for L(Nov), M(Dec) or early N (Jan). Thanks again.

s2ms · September 17, 2009 at 11:02 AM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

It would also be appropiate for the date of the heads to be earlier than the engine assembly date stamped on the 'boss' near the distributor which is more accurate than the car's scheduled assembly date.

Jim<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

Agreed. Of course the engine assembly date is only helpful if you still have the original block...<img src=images/icon_smile_angry.gif border=0 align=middle>

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>From a spread sheet I'm playing with here are some examples of spreads from San Jose cars, since the spread would be different IMHO different plants due to shipping distances<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

Jeff, I'm fairly certain the scheduled SJ build date for 6S1757, Ford VIN 178xxx, is March 29. Do you have any block casting date or engine assembly date data for cars near that?

Thanks,

Dave

J_Speegle_old · September 17, 2009 at 11:06 PM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

Jeff, I'm fairly certain the scheduled SJ build date for 6S1757, Ford VIN 178xxx, is March 29. Do you have any block casting date or engine assembly date data for cars near that?

Not sure how any of us can be certain of real finish dates on these cars but that is a never ending discussion at this point. Especially when the date you posted is about that the door tag would have had on it. and we know those were off most of the time looking at the 67-up data we have.

Only thing I have from anywhere near that point (still collecting and recording allot of data points) is the 05C date car mentioned above

Sorry

s2ms · September 18, 2009 at 10:53 AM

Thanks Jeff. Do you have the VIN for the 05C build date engine?

BoS_old · September 18, 2009 at 2:03 PM

Jeff,

We are pretty sure as regards my 65 Shelby with original engine.

Engine assembly date is May 3, 1965 and we know car was received

at Shelby American on May 13, 1965. Block cast date is April 23, 1965. Both heads are dated March 18, 1965.

car must have been assembled around May 7 at Ford in San Jose.

/Bo

J_Speegle_old · September 18, 2009 at 6:06 PM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

Thanks Jeff. Do you have the VIN for the 05C build date engine?

6R07K1726xx

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

Jeff,

We are pretty sure as regards my 65 Shelby with original engine.

................... car must have been assembled around May 7 at Ford in San Jose.

That was #275 ?

BoS_old · September 18, 2009 at 9:54 PM

Yes, that's 5S275. 5R09K217XXX

/Bo

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