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Old 05-01-2019, 04:26 PM   #1
34fordy
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Default 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?
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Old 05-01-2019, 04:38 PM   #2
petehoovie
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Default 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....
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Old 05-01-2019, 04:38 PM   #3
Kurt in NJ
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Default 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
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Old 05-01-2019, 06:09 PM   #4
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Default 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
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Old 05-01-2019, 09:35 PM   #5
Ronnieroadster
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Default 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.
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Old 05-02-2019, 12:27 AM   #6
cajunfirehawk
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Default Re: 1936 LB marking

All I have seen written on these LB blocks I have never seen any pics of the actual LB stamping on a block...
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Old 05-02-2019, 12:04 PM   #7
Chris Haynes
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Default Re: 1936 LB marking

I have to ask, what is a LB block?
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Old 05-02-2019, 12:37 PM   #8
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Default 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.
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Old 05-02-2019, 01:26 PM   #9
Teltruck
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Default Re: 1936 LB marking

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

LB LATE BLOCK ?
LB LARGE BEARING ?
LB LARGE BLOCK?
Iíve heard different people say different meanings.
Bob
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Old 05-02-2019, 01:39 PM   #10
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Default Re: 1936 LB marking

Quote:
Originally Posted by Chris Haynes View Post
I have to ask, what is a LB block?
One that excepts insert bearings, verses the earlier babbitt bearings.
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Old 05-02-2019, 02:13 PM   #11
JM 35 Sedan
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Default Re: 1936 LB marking

Quote:
Originally Posted by Teltruck View Post
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.
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Old 05-02-2019, 02:37 PM   #12
V12Bill
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Default Re: 1936 LB marking

Quote:
Originally Posted by Teltruck View Post
Does anyone know the correct meaning of the term LB Engine?

LB LATE BLOCK ?
LB LARGE BEARING ?
LB LARGE BLOCK?
Iíve heard different people say different meanings.
Bob
I have heard tthat it means Large Bearing as the cap bolts are farther apart.
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Old 05-02-2019, 02:39 PM   #13
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Default Re: 1936 LB marking

Beware of frauds stamping a reg block to get a better prrice.
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Old 05-02-2019, 05:07 PM   #14
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Default Re: 1936 LB marking

From what I've read,the LB main bearing studs are 4-1/4 inches apart on center.
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Old 05-02-2019, 05:42 PM   #15
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Default 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
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Old 05-02-2019, 05:56 PM   #16
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Default Re: 1936 LB marking

That sounds like the crankcase vent. The venting was added in 1935 which was the same year that the large bearing change came about in late 1935. Water pumps were in the head unless you mean the engine mount spigot for water inlet to the engine.

Main bearing bolt or stud distance apart is the best way to know for sure.
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Old 05-02-2019, 06:02 PM   #17
KiWinUS
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Default Re: 1936 LB marking

Not crank case vent
It’s in casting space between water inlet & crank seal
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Old 05-02-2019, 08:01 PM   #18
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Default Re: 1936 LB marking

I think it means Liner Bearing.
I also have one with no LB stamp.
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Old 05-02-2019, 08:40 PM   #19
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Default Re: 1936 LB marking

It's been said they were only marked with "LB" if the engine was serviced in a rebuild or such after leaving the OEM factory.
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Old 05-02-2019, 10:07 PM   #20
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Default Re: 1936 LB marking

Great info guys!
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