mystery no`s on BBO heads

geckonz08 · August 20th, 2008, 10:24 PM

On the intake side of both heads (B heads , 66 toro ) there is the number 2.6 stamped there.Has there been some surfacing work done on these heads wih the number relating to the quantity of metal removed?? I see no similar numbers on the block side of the heads ??
Any thoughts ?
thanks
mike

Redog · August 21st, 2008, 11:30 AM

Casting numbers are usually above the center 2 exhasut ports.

The numbers of "B" heads are 389395. But is there a drill spot too? Without the drill spot they are 45* heads, with the drill spot they are 39* heads. Both are/were 80cc

geckonz08 · August 21st, 2008, 01:48 PM

tx red. No I have that part of the issue you mentioned well under control. The number 2.6 is on the intake side of the head, 1/2 way along the head between the ports --maybe I will see if I can post a pic .I suspect ??? it may relate to some previous mill work --guess only ,thats why I ask.
cheers
mike

joe_padavano · August 21st, 2008, 02:42 PM

Quote:

Originally Posted by geckonz08

tx red. No I have that part of the issue you mentioned well under control. The number 2.6 is on the intake side of the head, 1/2 way along the head between the ports --maybe I will see if I can post a pic .I suspect ??? it may relate to some previous mill work --guess only ,thats why I ask.
cheers
mike

Are these raised cast numbers or stamped in?

geckonz08 · August 21st, 2008, 05:26 PM

joe,

they are stamped in --on the face of the head which meets the intake manifold
mike

Redog · August 21st, 2008, 07:49 PM

The numbers I told you would be right where the head meets the exhaust manifold.

The only other casting I know of on Olds heads would be the "B" you were talking about already

joe_padavano · August 22nd, 2008, 09:04 AM

Quote:

Originally Posted by geckonz08

joe,

they are stamped in --on the face of the head which meets the intake manifold
mike

The Chassis Service Manual shows that if oversize lifters were needed (due to production tolerances) when the engine was built, there was a stamping on the head in the location you've indicated.

BILL DEMMER · August 22nd, 2008, 10:26 AM

Quote:

Originally Posted by joe_padavano

The Chassis Service Manual shows that if oversize lifters were needed (due to production tolerances) when the engine was built, there was a stamping on the head in the location you've indicated.

the chassis manual indicates oversize lifter stamping is on the block's lifter boss.
stamping is pictured as a "O". the presence of an "O" indicates .010" o.s. lifter .

bill

geckonz08 · August 22nd, 2008, 03:04 PM

Red,Joe,Bill,
Thanks guys .
sometimes an answer raises more questions. However, I will try n get a pic -may have to put carbon black in the stamping no`s to get no`s to stand out.
Seems the oversize lifter thing might be it .
Irrespective, I believe it may be more of a curiosity than a problem.
mike

joe_padavano · August 22nd, 2008, 04:04 PM

Quote:

Originally Posted by BILL DEMMER

the chassis manual indicates oversize lifter stamping is on the block's lifter boss.
stamping is pictured as a "O". the presence of an "O" indicates .010" o.s. lifter .

bill

Boy, memory is the second thing to go, and i can't remember the first...

Run to Rund · August 23rd, 2008, 01:32 PM

I know about the drill spot on the raised rib near the oil filler tube; haven't seen drill marks on heads. However, B heads will only have 2.06" intake valves (vs. 2.0") if 442 or Toro and both came with 39 degree, .921 lifters.

geckonz08 · August 23rd, 2008, 01:49 PM

hi run to rund ,
the engine in question is 30 mins away . when I get a moment I will have to get a pic. The numbers ,unlike B and the drill spot etc are not visible until the intake manifold is removed.

mike

geckonz08 · August 24th, 2008, 12:54 AM

Here is a pic of one of the heads showing the position of the stamped no`s 2.6. The numbers are next to the green pen tip . The no`s and position are the same on the other head -
mike

geckonz08 · August 24th, 2008, 01:01 AM

maybe this is better

saved2az · October 31st, 2009, 10:17 PM

I have a set of 1973 Ka 413191 cast and my heads have AX130 in the same place you are talking about so can any one figure that out the lifter size does not make sense for that many letters and numbers
well would likke to know any info

wmachine · November 1st, 2009, 07:03 AM

Quote:

Originally Posted by Redog

But is there a drill spot too? Without the drill spot they are 45* heads, with the drill spot they are 39* heads. Both are/were 80cc

Quote:

Originally Posted by Run to Rund

I know about the drill spot on the raised rib near the oil filler tube; haven't seen drill marks on heads. However, B heads will only have 2.06" intake valves (vs. 2.0") if 442 or Toro and both came with 39 degree, .921 lifters.

Redog, as Joe says, I think you're getting your info mixed up. The drill points are on the block, not the heads.

August 20th, 2008, 10:24 PM	#1 (permalink)
geckonz08 Registered User Join Date: Apr 2008 Location: new zealand Posts: 218	mystery no`s on BBO heads On the intake side of both heads (B heads , 66 toro ) there is the number 2.6 stamped there.Has there been some surfacing work done on these heads wih the number relating to the quantity of metal removed?? I see no similar numbers on the block side of the heads ?? Any thoughts ? thanks mike

August 21st, 2008, 11:30 AM	#2 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 1,145	Casting numbers are usually above the center 2 exhasut ports. The numbers of "B" heads are 389395. But is there a drill spot too? Without the drill spot they are 45* heads, with the drill spot they are 39* heads. Both are/were 80cc __________________ Me 2000 Alero running 14's 2005 Nissan Altima (her's) 1967 Olds 330 motor sitting on a stand 1985 Delta 88 w/1968 350 rocket ( MURDERED )

August 21st, 2008, 07:49 PM	#6 (permalink)
Redog Alero Chapter Secretary Join Date: Aug 2006 Location: Newtown, PA Posts: 1,145	The numbers I told you would be right where the head meets the exhaust manifold. The only other casting I know of on Olds heads would be the "B" you were talking about already __________________ Me 2000 Alero running 14's 2005 Nissan Altima (her's) 1967 Olds 330 motor sitting on a stand 1985 Delta 88 w/1968 350 rocket ( MURDERED )

October 31st, 2009, 10:17 PM	#15 (permalink)
saved2az Registered User Join Date: Sep 2009 Posts: 4	mystery numbers I have a set of 1973 Ka 413191 cast and my heads have AX130 in the same place you are talking about so can any one figure that out the lifter size does not make sense for that many letters and numbers well would likke to know any info

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

August 21st, 2008, 01:48 PM	#3 (permalink)
geckonz08 Registered User Join Date: Apr 2008 Location: new zealand Posts: 218	tx red. No I have that part of the issue you mentioned well under control. The number 2.6 is on the intake side of the head, 1/2 way along the head between the ports --maybe I will see if I can post a pic .I suspect ??? it may relate to some previous mill work --guess only ,thats why I ask. cheers mike

August 21st, 2008, 05:26 PM	#5 (permalink)
geckonz08 Registered User Join Date: Apr 2008 Location: new zealand Posts: 218	joe, they are stamped in --on the face of the head which meets the intake manifold mike

August 22nd, 2008, 03:04 PM	#9 (permalink)
geckonz08 Registered User Join Date: Apr 2008 Location: new zealand Posts: 218	Red,Joe,Bill, Thanks guys . sometimes an answer raises more questions. However, I will try n get a pic -may have to put carbon black in the stamping no`s to get no`s to stand out. Seems the oversize lifter thing might be it . Irrespective, I believe it may be more of a curiosity than a problem. mike

August 23rd, 2008, 01:32 PM	#11 (permalink)
Run to Rund Registered User Join Date: Mar 2008 Posts: 337	I know about the drill spot on the raised rib near the oil filler tube; haven't seen drill marks on heads. However, B heads will only have 2.06" intake valves (vs. 2.0") if 442 or Toro and both came with 39 degree, .921 lifters.

August 23rd, 2008, 01:49 PM	#12 (permalink)
geckonz08 Registered User Join Date: Apr 2008 Location: new zealand Posts: 218	hi run to rund , the engine in question is 30 mins away . when I get a moment I will have to get a pic. The numbers ,unlike B and the drill spot etc are not visible until the intake manifold is removed. mike

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
BBO Heads - 2 pairs for sale	442_rocket	Parts For Sale	1	July 19th, 2008 09:43 PM
ID: Mystery gauge on dash	Mister	Eighty-Eight	5	January 14th, 2008 08:36 PM
BBO heads?	GoldOlds	Big Blocks	6	November 16th, 2007 06:56 PM
mystery box	ztim	Electrical	6	November 9th, 2007 07:57 PM
Losing Water Mystery	jaco	Other	4	January 20th, 2007 07:42 AM