Re: LT-1 Heads

[Len Sabatine <sabatine@epix.net>]

    Yep , Fluid Dynamics doesn't seem to be a strong point in the LS1 lube
system chain , along with the NorthStar style oil pump scheme , which BTW,
  Cad has had Drive Gear spin on crank snout . LS1 heads will fit on a Ford
Windsor with some revisions and visa versa. Betcha that gets things cooking
up @ 33003 Van Dyke ! What made the small block so popular WAS the
interchangeability / reuse of components , that's GONE ,now most fasteners
 are  TTY as well. In competition use some folks have had Cylinder case
motor mounting and starter boss failures on LS1, [ Now Revised ]. Many
design features today are done for packaging / profit advantage , not
necessarily for longevity or power , not lending themselves to upgrade later,
without total replacement. [ unfortunate ].
Len


> -> Ok, what's the difference between the LT-1 and the LS-1? I thought
> -> the LS-1 was the start of reverse flow cooling?
>
>  The LS-1 is conventionally cooled.  The reverse flow thing for the
> LT1 was primarily hype.  The bizarre water pumps were a major warranty
> service failure point too.
>
>  The LS-1's wristpins and lifters supposedly will interchange with a
> normal small block Chevy; otherwise it might as well be a Ford or
> Rambler, because nothing else in there is even remotely compatible with
> the previous engines.
>
>  It's actually a fairly nice design, except for that crapball gerotor
> oil pump driven off the crank snout.  That's a common design nowadays,
> but it's done to be cheap to make, not because it's good.  The long
> pickup tubes mean it takes a longer time to build oil pressure, and once
> you aerate the oil (like if you're running a track event) the pump
> starts having problems sucking the oil up above the sump level.  Pumps
> should run with a positive head; that's my less-than-tolerant opinion.
>
> ==dave.williams@chaos.lrk.ar.us======================================
> I've got a secret / I've been hiding / under my skin / | Who are you?
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