My main experience with good running 413s is with my recently sold 64 New
Yorker T&C wagon, and my previous 62 Ditto, but I also drove the ex-Tony
Lindsey/Jay McKee 63 Crown for a short ways while before I parked it.
All 3 had an off-the-line snap that none of my 68's or my 69 showed.
My two 67's do seem to have better throttle response, so perhaps you are
right about the earlier 440s.
In my case, my 67s have 915 heads, which is the vaunted closed chamber head
the muscle car guys are always carrying on about, so perhaps that is where
the difference lies. The 68s have 906 heads.
By the way, in case anyone cares, the exhaust valves in the 915 heads are
1.6", not 1.74" as given by the gurus on the MOPAR web sites.
Dick Benjamin (and you're right, there's no place in this country where I
would even try for WOT performance!)
----- Original Message -----
From: D. Dardalis <dardal@xxxxxxxxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Wednesday, July 10, 2002 7:24 AM
Subject: IML: 413 vs 440!
>
> >(yes, I like it better than my 440 equipped cars!)
> >
> >Dick Benjamin
>
> DB, I did not know you also had pre 67 Imperials. What other years do you
> have except for the 67 and 68?
>
> DB, if you like the 413 for its light load throttle response, you should
> also like the 66 440s that had the same heads with the 413 (smaller intake
> ports and exhaust valves). These should also have good light load
response.
>
> At 12:19 AM 7/10/2002 -0700, you wrote:
> >I'm glad ti finally find someone else that agrees that the 413 is a
better
> >engine then the 440. I've had many of both, & never found a 440 that I
> >really loved.
> >John
>
> I wouldn't take it that far ;) I guess it depends what you like. If its
> full throttle performance that you like, the 440 was substantially
superior
> (even if the factory rating was essentially similar). Road tests show
that
> late 60's 440's had substantially higher torque throughout the rpm range,
> leading to much better performance. Also, given the tons of low end
> torque, one can install a slightly bigger cam on a 440 (sacrificing a bit
> of the low end, but there is so much, so its OK!), getting a very
> substantial upper end. But I have never driven a 413 Imperial, so I do
not
> doubt DB's opinion of better response at light loads (don't think DB is
> into WOT performance too much ! ;)).
> D^2
>
>
>
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