There is a truck specific 427ci. The two C-70 Chevy's that I used to drive
at work both had 427ci "truck blocks" (1981, 1985). The motor does have a
taller deck height, and I have been told that they use different heads and
intake that the standard 427ci. car motor. I don't think that a standard
454ci would stand up to the abuse that these motors suffer. As far as I
know they were still using this motor in the big C-series trucks until a
few years ago (I have seen a 1991 C-60 with this motor) and may still be.
Weren't all of the 400ci motors small-blocks? I have seen a 402ci. big
block, but I thought all of the 400ci motors were small-blocks.
Where is Jim Forbes when you need him. 8^)
Kevin Lake
56 GMC Suburban/napco
----------
> From: MarkNoakes@aol.com
> To: oletrucks@autox.team.net
> Subject: Re: Re: [oletrucks] 366 V-8/big blocks
> Date: Sunday, March 14, 1999 5:28 AM
>
> This is a question for the mythical Jim Forbes.
>
> Even though I've heard it called a truck block, probably from the earlier
> 348/409 engines which did start out in trucks and then ended up in cars,
the
> 427 started out as a 396. The 427 was used mostly in 67-69? (then 454)
> Corvettes and a very few Chevelles, Camaros, Novas, etc. A very few of
these
> were aluminum (ZL1). The 427 usually was not put in trucks until it
became
> the 454. The typical truck big block was the 396/400/402 on the 67-72
1/2
> tons, but some 427's could've gotten in there somewhere. GM now has a
bored
> out version to 502.
>
> Most of the 427's had more than 390hp and the L88 Corvette, which was
> advertised at 425hp, actually put out closer to 550hp. It could be
bought for
> the street if you were crazy enough, but was meant for the racetrack.
>
> Mark Noakes
>
> In a message dated 3/14/99 1:56:53 AM, you wrote:
>
> <<
> The 366 is a Big Block, but of a different breed. It has a taller deck
> height tha n the standar family, something in the area of .6 inches or
so, to
> accomadate a 4th ring and taller piston. There was also a 427 "truck"
block.
> It really has no advantages to any other street motor, but is sought
after
> block for the serious racer whos limited in cu.in class. The 427 truck
block
> is now a hot item too.
>
> I've heard that GM is making the same type blocks in larger cubes now,
also.
>
> Mike>>
>
> 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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