In a message dated 7/25/2007 7:46:10 A.M. Eastern Daylight Time,
YBSHORE@xxxxxxx writes:
Imperialists:
The only
difference I find between the two motors, besides the dual snorkel, are
that the TNT came with duals, rated to 375HP, and the 'basic' 440 did not have
that exhaust system and was rated at 350HP. After reading Uncle Rodgers'
post's for years about 'getting more out of a car' in regards to a dual
exhaust system by matching the outlet to the pipe size,etc., and letting these
ol' girls breath, thus giving it the extra 5% to 10% gain, I am wondering
if "HP", really meant 'factory stock duals'?
Jack
The 440
Dual option was not an engine package as such, but a standard 440
with the
addition of a dual snorkel air cleaner and dual exhaust. The
horsepower
rating for this option raised the standard figure from 350 to
360. The
high performance 440 TNT/Magnum/Super Commando differed in these
areas as
applied to C-bodies in '68:(Imperial now being a C-body) Carter
carb
#4429S in place of Holley, H.D. valve springs, special cam, 268-284-68
in
place of standard cam 256-260-32, dual point distributor instead of
single
points, upswept exhaust manifolds instead of log type and a windage
tray
for the oil pan. This engine was available for any C-body except
Imperials
and wagons; which also had the standard 440 twin snorkel/exhaust
option.
This was a one year only deal for the Imperial ('68) but was a wagon
option for many years. Chrysler never even bothered to note the option
raised the gross h.p. by 10 in wagon literature but hyped it up in the
Imperial catalog. What a shame the 375 horse 440 was not an option-it sure
should have been. It is my feeling that with the typical fastidious
Imperial
owner, the twin snorkel/exhaust thing may fly under his radar,
but the
rumpity-rump 375 horse cam would have been too much! BTW- v.i.n.
code for
350/360 horse 440- K vs. L for 375 horse 440.
Eric
S.
'65 Crown
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