The Ford Barn

34fordy · 05-01-2019, 04:26 PM

If a 1936 engine has an LB marking, is it visible with the intake manifold installed? Is it always at the front of the left bank?

petehoovie · 05-01-2019, 04:38 PM

On the ones I've looked at, the LB marking is visible with the intake manifold in place - front of the left bank....

Kurt in NJ · 05-01-2019, 04:38 PM

I have 3 lb blocks, none marked---- perhaps the oil pan can tell by shape or hammer dents out to clear front main bolts

flathead34 · 05-01-2019, 06:09 PM

I have a LB engine in my '34 PU. There are no marking (LB) stamped on the top of the engine. Another LB engine we have has the LB stamped on the top of the block. Who knows what Ford did? Mike

Ronnieroadster · 05-01-2019, 09:35 PM

The LB blocks i have seen the stamping on was visible with the intake in place and location of the stamping was near the front but not sure what side.

cajunfirehawk · 05-02-2019, 12:27 AM

Sponsored Links (Register now to hide all advertisements)

All I have seen written on these LB blocks I have never seen any pics of the actual LB stamping on a block...

50droptop · 06-10-2019, 07:20 AM

Quote:

Originally Posted by cajunfirehawk

All I have seen written on these LB blocks I have never seen any pics of the actual LB stamping on a block...

LB photo

RobR'35 · 06-10-2019, 07:48 AM

That's the usual placement of the stamp.
It's been said that those stamps were placed once an engine was overhauled or some major service work performed after leaving the factory.
It could be why so many aren't stamped to this day.
Food for thought....

Scott/Mn · 06-10-2019, 09:04 AM

Here is another picture of an LB block stamp, in this ad-
https://www.fordbarn.com/forum/showthread.php?t=181366

My '34 has an "LB engine", however the top of the block is not stamped.

50droptop · 06-10-2019, 10:45 AM

Quote:

Originally Posted by 50droptop

LB photo

Not sure about the LB being stamped after overhaul, but this engine was std bore from a 40K mile ‘36 5W. Engine was torn down, cleaned, new valves/lifters and new STD rings and bearings added. No machine work was required. The rebuilder even commented what I was doing was overkill as engine was all within tolerances and surfaces were excellent.

Chris Haynes · 05-02-2019, 12:04 PM

I have to ask, what is a LB block?

JSeery · 05-02-2019, 01:39 PM

Quote:

Originally Posted by Chris Haynes

I have to ask, what is a LB block?

One that excepts insert bearings, verses the earlier babbitt bearings.

Ron Pilger · 05-02-2019, 12:37 PM

Chris, it's a 1936 21 stud flathead with insert bearings versus babbitt. 36 was the first year that the changeover started taking place.

Teltruck · 05-02-2019, 01:26 PM

Does anyone know the correct meaning of the term LB Engine?

LB LATE BLOCK ?
LB LARGE BEARING ?
LB LARGE BLOCK?
I’ve heard different people say different meanings.
Bob

JM 35 Sedan · 05-02-2019, 02:13 PM

Quote:

Originally Posted by Teltruck

Does anyone know the correct meaning of the term LB Engine?

LB LATE BLOCK ?
LB LARGE BEARING ?
LB LARGE BLOCK?
I’ve heard different people say different meanings.
Bob

Another is "loose bearing (s)"

I also have several '36 LB engines that do not have LB stampings on intake deck.

V12Bill · 05-02-2019, 02:39 PM

Beware of frauds stamping a reg block to get a better prrice.

Willit Stop · 05-02-2019, 05:07 PM

From what I've read,the LB main bearing studs are 4-1/4 inches apart on center.

V12Bill · 05-02-2019, 02:37 PM

Quote:

Originally Posted by Teltruck

Does anyone know the correct meaning of the term LB Engine?

LB LATE BLOCK ?
LB LARGE BEARING ?
LB LARGE BLOCK?
I’ve heard different people say different meanings.
Bob

I have heard tthat it means Large Bearing as the cap bolts are farther apart.

KiWinUS · 05-02-2019, 05:42 PM

Okay I hope I get this right but hopefully Brian will chime in to correct me. New Zealand 36 LB engines out of Canada have a hole in the front of oil pan rail about 1/2 diameter at front between water pump & crank seal casting opening in front of block. Very easily distinguished

Brian · 05-03-2019, 02:38 AM

KiWinUS is correct as regards Canadian blocks; all Canadian blocks since and including the 36 LB block, have an approximately 5/8" dia hole in front of oil pan mating surface, behind the pulley. They also have another similar hole at rear of oil pan mating surface which is only visible with the pan removed. I can only assume these two holes were machined to locate the block into fixtures for subsequent machining operations in the factory.Anyway, as that front hole is easy to see/feel, if a early style block, ie pump in head, is found that carries said hole, it is a 100% sure indication that it has liner bearings [LB block]. No babbitted main bearing engines carry this identification.
Again, USA LB blocks do not have this feature, Canadian only!

05-01-2019, 04:26 PM	#1
34fordy Senior Member Join Date: Dec 2014 Location: Fort dodge, Iowa Posts: 822	1936 LB marking If a 1936 engine has an LB marking, is it visible with the intake manifold installed? Is it always at the front of the left bank?

05-01-2019, 04:38 PM	#2
petehoovie Senior Member Join Date: May 2015 Posts: 8,137	Re: 1936 LB marking On the ones I've looked at, the LB marking is visible with the intake manifold in place - front of the left bank.... __________________ The only thing nice about being imperfect is the joy it brings to others.... *"Silver rings, your butt! Them's washers!"* "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0

05-01-2019, 04:38 PM	#3
Kurt in NJ Senior Member Join Date: May 2010 Location: on the Littlefield Posts: 6,159	Re: 1936 LB marking I have 3 lb blocks, none marked---- perhaps the oil pan can tell by shape or hammer dents out to clear front main bolts

05-01-2019, 06:09 PM	#4
flathead34 Senior Member Join Date: May 2010 Location: Oro Valley, AZ Posts: 435	Re: 1936 LB marking I have a LB engine in my '34 PU. There are no marking (LB) stamped on the top of the engine. Another LB engine we have has the LB stamped on the top of the block. Who knows what Ford did? Mike

05-01-2019, 09:35 PM	#5
Ronnieroadster Senior Member Join Date: Dec 2010 Location: East Coast in CT Posts: 1,529	Re: 1936 LB marking The LB blocks i have seen the stamping on was visible with the intake in place and location of the stamping was near the front but not sure what side. __________________ I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH

05-02-2019, 12:27 AM	#6
cajunfirehawk Senior Member Join Date: Jul 2018 Location: Ms GulfCoast Posts: 238	Re: 1936 LB marking Sponsored Links (Register now to hide all advertisements) All I have seen written on these LB blocks I have never seen any pics of the actual LB stamping on a block... __________________ Regards, Todd 1936 FORD Tudor Slantback "cajunhotrodder" on instagram/youtube

06-10-2019, 07:48 AM	#8
RobR'35 Senior Member Join Date: Dec 2014 Location: Upper Peninsula, Michigan Posts: 604	Re: 1936 LB marking That's the usual placement of the stamp. It's been said that those stamps were placed once an engine was overhauled or some major service work performed after leaving the factory. It could be why so many aren't stamped to this day. Food for thought....

06-10-2019, 09:04 AM	#9
Scott/Mn Senior Member Join Date: May 2010 Location: Minnesota, USA Posts: 138	Re: 1936 LB marking Here is another picture of an LB block stamp, in this ad- https://www.fordbarn.com/forum/showthread.php?t=181366 My '34 has an "LB engine", however the top of the block is not stamped.

05-02-2019, 12:04 PM	#11
Chris Haynes Senior Member Join Date: May 2010 Location: Camarillo, CA and Pine Grove, CA Posts: 2,832	Re: 1936 LB marking I have to ask, what is a LB block? __________________ 1921 Runabout 1930 Tudor Early 1930 AA Speed costs money. How fast do you want to go?

05-02-2019, 12:37 PM	#13
Ron Pilger Senior Member Join Date: May 2010 Location: Camrose, Alberta Posts: 396	Re: 1936 LB marking Chris, it's a 1936 21 stud flathead with insert bearings versus babbitt. 36 was the first year that the changeover started taking place.

05-02-2019, 01:26 PM	#14
Teltruck Senior Member Join Date: Feb 2011 Location: Southern Mass Posts: 195	Re: 1936 LB marking Does anyone know the correct meaning of the term LB Engine? LB LATE BLOCK ? LB LARGE BEARING ? LB LARGE BLOCK? I’ve heard different people say different meanings. Bob

05-02-2019, 02:39 PM	#16
V12Bill Senior Member Join Date: May 2010 Location: Mt. Holly,NJ Posts: 1,822	Re: 1936 LB marking Beware of frauds stamping a reg block to get a better prrice.

05-02-2019, 05:07 PM	#17
Willit Stop Senior Member Join Date: Feb 2013 Location: Eureka Calif. Posts: 969	Re: 1936 LB marking From what I've read,the LB main bearing studs are 4-1/4 inches apart on center.

05-02-2019, 05:42 PM	#19
KiWinUS Senior Member Join Date: May 2010 Location: Charlotte NC KiWi-L100 available here Posts: 2,960	Re: 1936 LB marking Okay I hope I get this right but hopefully Brian will chime in to correct me. New Zealand 36 LB engines out of Canada have a hole in the front of oil pan rail about 1/2 diameter at front between water pump & crank seal casting opening in front of block. Very easily distinguished

05-03-2019, 02:38 AM	#20
Brian Senior Member Join Date: May 2010 Location: Masterton, New Zealand Posts: 3,834	Re: 1936 LB marking KiWinUS is correct as regards Canadian blocks; all Canadian blocks since and including the 36 LB block, have an approximately 5/8" dia hole in front of oil pan mating surface, behind the pulley. They also have another similar hole at rear of oil pan mating surface which is only visible with the pan removed. I can only assume these two holes were machined to locate the block into fixtures for subsequent machining operations in the factory.Anyway, as that front hole is easy to see/feel, if a early style block, ie pump in head, is found that carries said hole, it is a 100% sure indication that it has liner bearings [LB block]. No babbitted main bearing engines carry this identification. Again, USA LB blocks do not have this feature, Canadian only! __________________ Unfortunately, two half wits don't make a whole wit!