Just a note on the heads, the 67 440 heads are very desireable, having the
earlier small combusion chamber combined with the larger valves and improved
intake port and larger exhaust valve size of the 68 and later heads. I think
you would see a difference in performance, especially if you go to the
trouble of having a good 3 angle valve job done while you're freshening them
up.
Don't forget to check the guide to valve stem clearance when rebuilding!
Phil <><
----- Original Message -----
From: "B & T Roddick" <1roscoe@xxxxxxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Tuesday, December 23, 2003 1:08 PM
Subject: Re: IML: 413 vs 400 engine swap
> I have a pair of the '67 440 heads (bare w/rockers) collecting rust in my
> shed. Would there be any real gain to buying the valves and installing
them
> at overhaul time for the 413? Assuming I can find pistons, or that I can
> get away with +.005" rings. By chance, will the 413 bore out big (and
> safe) enough to install standard 426 wedge or 440 slugs?
>
> Bill & Tami Roddick
> Port Orchard, WA
> 1964 Imperial Crown 4 DR HT
> 1972 'Cuda 340 (Tami's Toy)
> 1988 Cherokee Laredo
> 1995 Concorde
>
>
> ----- Original Message -----
> From: "William Parker" <parkerw@xxxxxxxxxxxxxxxxxxxxxx>
> To: <mailing-list@xxxxxxxxxxxxxxxx>
> Sent: Tuesday, December 23, 2003 8:06 AM
> Subject: Re: IML: 413 vs 400 engine swap
>
>
> > My .02 worth, the short block is essentially the same piece,
> > it is the heads that make a difference in performance. The
> > 413 stock heads are closed chamber, nominal 10:1 static
> > compression ratio with the stock flat top pistons. '66 and
> > '67 440 heads had closed chambers also, the '67 440 head is
> > the "915" head with closed chambers but larger ports and
> > valves than earlier heads.
> <snip>
>
>
>
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