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Old 02-25-2007, 10:24 PM   #2
MagicRat
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Re: difference in 427 truck motor and car motor

There have been several threads on this. Generally, the truck blocks have a 1 inch taller deck, designed to accomodate heavier, taller pistons and (I think) longer rods.
The heads tend to be small valve, low compression types.

The auto 396 - 427 - 454 heads will bolt on, but the intake manifolds are too narrow and will not fit. The reciprocating assembly is a bit heavier, so the engine builds revs slower

Conventional wisdom says the truck blocks are not suitable for any kind of performance, even if they will fit in your car (due to deck clearance problems)
However, a previous post on the subject mentioned a company that builds performance parts for such engines....... I cannot find the name, though.
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