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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