The Ford Barn

Rodrelic · 05-30-2024, 05:50 PM

Have a NOS block, dunno what, I am going to get the light rust boiled off, code says 4 bolt main but not seeing that. Know flatheads & learning 289’s but not these things. Ideas?

KULTULZ · 05-30-2024, 06:37 PM

https://www.diyford.com/ford-big-blo...-engine-guide/

miker98038 · 05-30-2024, 06:37 PM

Even blown up I can’t seem to read the numbers on a tablet. But a 4 bolt main is usually pretty obvious looking at the block

KULTULZ · 05-30-2024, 06:44 PM

'Ya know ...

It's posts like this that make me insanely jealous ...

...

I just happened to have this laying around NOS... show-off ...

Rodrelic · 05-31-2024, 08:33 AM

Fresh views, pulled it out of a semi trailer Wednesday, dealership cleaned out in ‘79, suppose I should get it cleaned even though I am not going to use it.

flatrod · 05-31-2024, 08:44 AM

Sponsored Links (Register now to hide all advertisements)

Its a 351 Cleveland 2 bolt main block, cast in Aug, 23 of 1971.

rotorwrench · 05-31-2024, 05:16 PM

If a person plays around with this stuff long enough, they can looks at those numbers and tell a lot about what it was meant to fit. With Ford's first digit being a decade code and the second being a year of change code then they just have to know what the other numbers mean. The 335 series engines were basically the 351 C and the 400. The 400 changed the family, ie 351M, early on and the oil embargo in the early 70s slowly killed them off.

mercman from oz · 05-31-2024, 05:22 PM

Numbers on a NOS Block - Rodrelic

Rodrelic · 05-31-2024, 05:23 PM

Thank you very much. Would it be good to get it cleaned up or put it out there as is? Don’t believe I will get into this, got too many flatheads

KULTULZ · 06-01-2024, 01:55 AM

Quote:

Originally Posted by Rodrelic

Thank you very much. Would it be good to get it cleaned up or put it out there as is? Don’t believe I will get into this, got too many flatheads

If that is a NOS BLOCK, I would leave it alone and put it up for sale ($$$).

The BLOCK CASTING ID NO. will be the same for a 2-bolt main or 4-bolt main.

The 4-bolt main block was subjected to a different machining protocol. That would give it a different ENGINEERING PN.

Find a 351C FORUM and advertise it there.

I wish I were still young as these things would run. I had one in a 73 RANCHERO (351CJ) and it would fly and it was a smog motor with a 4300D CARB on it. Perfect swap for a '57.

05-30-2024, 06:37 PM	#2
KULTULZ Senior Member Join Date: Aug 2012 Location: IN A GALAXIE FAR, FAR AWAY Posts: 7,384	Re: Whatisit? https://www.diyford.com/ford-big-blo...-engine-guide/ __________________ ***** "Last Sunday, I caught him makin' eyes at Idell Bushey durin' preachin'. And I know what they do up there in the hills when they say they're possum huntin'. They're just sittin' around the campfire, drinkin' hard cider, hittin' each other on the shoulder and hollerin' 'flinch!'." ― Charlene Darling (Daughter of Briscoe Darling)

05-30-2024, 06:37 PM	#3
miker98038 Senior Member Join Date: Mar 2013 Location: Kent, WA. Tucson, AZ Posts: 1,766	Re: Whatisit? Even blown up I can’t seem to read the numbers on a tablet. But a 4 bolt main is usually pretty obvious looking at the block

05-30-2024, 06:44 PM	#4
KULTULZ Senior Member Join Date: Aug 2012 Location: IN A GALAXIE FAR, FAR AWAY Posts: 7,384	Re: Whatisit? 'Ya know ... It's posts like this that make me insanely jealous ... ... I just happened to have this laying around NOS... show-off ... __________________ ***** "Last Sunday, I caught him makin' eyes at Idell Bushey durin' preachin'. And I know what they do up there in the hills when they say they're possum huntin'. They're just sittin' around the campfire, drinkin' hard cider, hittin' each other on the shoulder and hollerin' 'flinch!'." ― Charlene Darling (Daughter of Briscoe Darling)

05-31-2024, 08:44 AM	#6
flatrod Senior Member Join Date: Dec 2012 Location: Anchorage Alaska Posts: 322	Re: Whatisit? Sponsored Links (Register now to hide all advertisements) Its a 351 Cleveland 2 bolt main block, cast in Aug, 23 of 1971.

05-31-2024, 05:16 PM	#7
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 18,007	Re: Whatisit? If a person plays around with this stuff long enough, they can looks at those numbers and tell a lot about what it was meant to fit. With Ford's first digit being a decade code and the second being a year of change code then they just have to know what the other numbers mean. The 335 series engines were basically the 351 C and the 400. The 400 changed the family, ie 351M, early on and the oil embargo in the early 70s slowly killed them off.

05-31-2024, 05:22 PM	#8
mercman from oz Senior Member Join Date: May 2012 Location: Queensland, Australia Posts: 12,568	Re: Whatisit? Numbers on a NOS Block - Rodrelic

05-31-2024, 05:23 PM	#9
Rodrelic Senior Member Join Date: Mar 2018 Location: Florida panhandle Posts: 220	Re: Whatisit? Thank you very much. Would it be good to get it cleaned up or put it out there as is? Don’t believe I will get into this, got too many flatheads Last edited by Rodrelic; 05-31-2024 at 05:29 PM.