Blaine, the 402,which was a 396 block enlarged somewhere along the line. It
was called a "big block 400" by some of the car guys. It may have been
called that in some early car ads also. The common 400 is the smallblock,
but it has it's own block, cranks, balancers, flywheels and can't
interchange parts with smaller blocks. It was more common in trucks of the
early 70's than in cars. Same with the big block 402, more in trucks than
cars. I remember Monte Carlos had them when they first came out in 70. I
think it had something to do with the cleaning up of big rigs that they
dropped it, as it was an underpowered big engine with the new EPA regs and
unleaded fuels. The 350 became the new big displacement engine in most of
vehicles. Was used for many years that way as we all know. Even the "big"
engine in p/ups now is the 6ltre with 8.1 big blocks only in one-ton or
bigger trucks. 350 is a 5.7 litre.
G. L. Perry
Huntington, IN 46750
glperry@fwi.com
Big AD trucks, COE
MM tractors and 1 Oliver!
----- Original Message -----
From: "Blaine Dumkee" <bmdumkee@auroranet.nt.ca>
To: <oletrucks@autox.team.net>
Sent: Saturday, November 30, 2002 5:22 PM
Subject: [oletrucks] Big Block
> Question for you big block experts.
>
> I am looking a purchasing a 1972 Chev Cheyenne C20 with a big block and
only
> 40,167 original miles.
>
> The owner is a friend of a friend. My friend says the truck has a 400 big
> block. Now I am positive it is NOT a 400 small block (huge valve covers).
> Late sixties there was a 396, then I have heard about a 402, but never a
400
> big block.
>
> What big block engines were put C20's in 1972?
>
> I do have pictures if this would help someone.
>
> Blaine Dumkee
> Fort Smith NT
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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