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Post Info TOPIC: B4 Engine Suffix Code?


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B4 Engine Suffix Code?


Hello all,

I recently bought an a 1965 Chevy C10 truck, and a Chevy small block was under the hood.  It was a Frankenstein motor with a 1971 intake manifold, and 1973 heads.  The casting number on the back of the block is 3914678 which indicates it could be a 302, 327, or 350.  The info on the top right front of the head has a serial number of 781129468 and then V0I04B4.  From what I was able to gather, the motor is from a 1968 Pontiac based on the partial serial number.  The second set of characters I believe tell me that the motor was cast in Flint, Michigan on January 4th.  BUT, I cannot find what the engine suffix code of B4 stands for.  Can anyone help me out with this?

Regards,

Chris

image.jpg



-- Edited by cgrocen on Sunday 10th of June 2018 10:15:51 PM



-- Edited by cgrocen on Sunday 10th of June 2018 10:57:59 PM

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A Poncho Legend!

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Welcome here.

Not that it's any help but you're not alone with this.

http://www.canadianponcho.activeboard.com/t57613470/sbc-decode/

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



A Poncho Legend!

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Based on the post that Carl linked having the same unknown B4 suffix in another Canadian Pontiac, cast in Flint,  maybe I'm stating the obvious when I say its a 327.

Neither A 302 or 350 was offered in a 1968 Pontiac. 



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Ray White, Toronto ON

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Built March 9, 1973 - Oshawa ON

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Poncho Master!

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I would agree that it would "most" likely be a 327 but the question would be horsepower and trans type. The suffix code should correlate to a given combination and that is what Chris and the other post were/are looking for.

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Eric - Regina, SK

The Projects:

1935 Chev 3 Window Std Coupe

1957 Chev 2dr 

1967 Mustang Convertible

1969 Firebird 350HO Convertible

1969 Camaro X11-V8

1969 2+2 was a 396

1969 2+2 427

1980 Harley FXWG

1982 Chevy Silverado

1986 CJ7 Jeep

 



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You could get a 350 Astro Econoflame (295 hp) in the 1968 Pontiac Acadian with the SS option.

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A Poncho Legend!

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cgrocen wrote:

You could get a 350 Astro Econoflame (295 hp) in the 1968 Pontiac Acadian with the SS option.


 They weren't built in Canada and its been established that the engine came from a car built in Canada. 



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Ray White, Toronto ON

1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Built January 10, 1993 - Bowling Green Kentucky 

 




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73SC I learned something new.

Regards, Chris

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cgrocen wrote:

73SC I learned something new.

Regards, Chris


 Sorry I was in a rush when I posted. In 1968 production shifted to Willow Run Michigan, prior to that they were built in Oshawa. The last Acadians were all built in Michigan 68-71 models.



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Ray White, Toronto ON

1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Built January 10, 1993 - Bowling Green Kentucky 

 




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Hello did we ever find out what the B4 SUFFIX code is for a CANADIAN PONTIAC ? anyone!



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Guru

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The B4 engine code looks like its a 327 210hp from a 68 b body Pontiac. 

t60.jpg

t61.jpg



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Guru

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Here are some engine codes for Beaumont 

t62.jpg



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Guru

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1968 Acadian engine codes:

 

t63.jpg



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Canadian Poncho Superstar!

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Ding Ding Ding! 68beaumont, you just published gold and solid documentation.

You've got to figure that in the USA the 327 2-barrel was only used in the Camaro that year. To use it, specifically tailored to a car line, dressed and ready to drop into a chassis on the assembly line, means having an engine assembly with a traceable code to schedule into production. Thusly they assign an engine code. It is also important in warranty & succession of parts numbers.

Since only the Canadian Pontiac used the 327 2-barrel that would match that configuration, this Chevrolet engine is a bit of a ghost in terms of common knowledge and online published facts (& folklore). To the average US enthusiast it is a Chevrolet engine and not a real Pontiac (ha, it is a unique Canadian Pontiac code!). As the base V8 in in one of Canada's most popular car lines, they made a lot of them in  their one year of existence. There is nothing to make them particularly desirable, but it was unique in that it was a crossover engine with the new larger bearings, but the last of the old style converted PCV system and oil filler tube on the intake.

1968 Astro Flash 327 210.jpg

 

For 1969 the 327 2-barrel became the base V8 in the full-size Chevrolets so they made a million of them. Up-rated to 235 horsepower due to a bigger 2-barrel for '69, a 210-horse version remained only as base in the Camaro line and would be dropped & replaced with the 307 during the run.

The 1969 Canadian Pontiac in lock-step with Chevrolet's 1969 upgrade in displacement on B-body base V8s, also went up and made the 350 2-barrel L65 base.

 

Many enduring changes made their debut in the small block engines, and their accessory mounting for 1969.



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67 Chevelle Malibu Sport Coupe, Oshawa-built 250 PG never disturbed.

In garage, 296 cid inline six & TH350...

Cam, Toronto.


I don't judge a man by how far he's fallen, but by how far back he bounces - Patton



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Here is 327 210 hp air cleaner from a 68 Parisienne. TIMG_2732[1].JPGIMG_2731[1].JPG



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Poncho Master!

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This has been a very interesting and informative thread!!

I'd like to respectfully comment on one line of Cams informative post.

"The 1969 Canadian Pontiac in lock-step with Chevrolet's 1969 upgrade in displacement on B-body base V8s, also went up and made the 350 2-barrel L65 base".

 

Before any Chevy got the L-65 Engine around Jan 1, 1969 Chevy used the legendary L-M1 255 HP 350 4 bbl.

The LM-1 was only used for 4 months alongside the L-48 350 4 bbl, but the LM-1 made a big drag racing impact.

LM-1's are still competitive today, mostly in 1969 Camaro stockers that are not the heavier SS models.

Due to the LM-1's advantages one rarely sees a 1969 Camaro SS 350 in drag racing.

Strangely, the 1971 L-48 350 was rated at 270 HP with a lower compression ratio. 

Someone at Chevy wanted to give Chevy drag racers a little bit of advantage.

The LM-1 later returned mostly as a pickup 350 4 bbl Engine.

 

Thanks

Randy

https://www.chevyhardcore.com/news/youve-heard-of-the-z28-and-ss-but-what-about-the-lm1-camaro/

 

Edited trying to make the link live but forgot how??

 



-- Edited by GLHS60 on Friday 19th of April 2024 01:50:28 PM





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A Poncho Legend!

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I fixed the link Randy, it should work now.



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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)



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Right on, Randy!

On the Camaros in '69 the 327 was base, the LM1 was optional. Later in the run the 327 & LM1 350 were discontinued, 307 was made base & the 250-horse L65 became the upgrade option.
Same for big '69 Chevies, the 327 & 255-horse LM1 350 were dropped late in the run & the L65 350 became base.

L65s replaced the LM1s in Chevelles & Novas late in the '69 run. Like GLHS60 said, the 255-horse was an underrated sleeper. The drivetrain was the same as the 300-horse L48 that differed in compression & gained 4-bolt mains. The 250-horse L65 went downward to Saginaw transmissions & 10-bolt rears.

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67 Chevelle Malibu Sport Coupe, Oshawa-built 250 PG never disturbed.

In garage, 296 cid inline six & TH350...

Cam, Toronto.


I don't judge a man by how far he's fallen, but by how far back he bounces - Patton



Poncho Master!

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4SPEED427 wrote:

I fixed the link Randy, it should work now.


 Right on Carl !!

 

Thanks

Randy



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Poncho Master!

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CdnGMfan wrote:

Right on, Randy!

On the Camaros in '69 the 327 was base, the LM1 was optional. Later in the run the 327 & LM1 350 were discontinued, 307 was made base & the 250-horse L65 became the upgrade option.
Same for big '69 Chevies, the 327 & 255-horse LM1 350 were dropped late in the run & the L65 350 became base.

L65s replaced the LM1s in Chevelles & Novas late in the '69 run. Like GLHS60 said, the 255-horse was an underrated sleeper. The drivetrain was the same as the 300-horse L48 that differed in compression & gained 4-bolt mains. The 250-horse L65 went downward to Saginaw transmissions & 10-bolt rears.


 Right on Cam, lots of great info!!

 

I tried to multi quote but obviously I couldn't pull it off.

 

Thanks

Randy



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Guru

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Another interesting thing GM of Canada did was they used 1967 carburetors for the 68 2bc production.IMG_2765[1].JPG



-- Edited by 68beaumont on Saturday 27th of April 2024 02:31:08 PM

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