LT-1 Heads

[Dave Williams]

-> 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 at chaos.lrk.ar.us======================================
I've got a secret / I've been hiding / under my skin / | Who are you?
my heart is human / my blood is boiling / my brain IBM |   who, who?
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