Tom,
The information that I have (from the same book you quote; page 29)
indicates that all 260's and all 289's up until 1968 had cylinder head
combustion chamber volumes that were 55cc max and 52cc min. From 68 and
later they used both those and the larger 64.7cc max / 61.7cc min chamber
volumes. Stick the valves in and titrate them if you want to be sure.
I'm confused by your intake valves. I show the 1.67's as used on the 221
cubic inch V-8 and that the 260's and up used1.79's (until the Boss at
2.19).
Is it possible your heads have been worked over?
Jim
----- Original Message -----
From: "Tom Brandt" <tbrandt@cox-internet.com>
To: "Tiger List" <tigers@autox.team.net>
Sent: Saturday, March 29, 2003 1:36 PM
Subject: Re: 260 cylinder heads
> Listers,
>
> I have the original heads off of B9470099 on the shelf. They have the
> rounded, small combustion
> chambers and the 1.67 intake and 1.45 exhaust valves. The casting code is
C4OE
> A and nowhere can I
> find a cubic inch designator. The date codes are 3M13 and 4A14. I also
have a
> set of 289 heads. The casting code on these heads is C3AE F and they both
have
> 289 below the exhaust ports and also in the valve spring area under the
rocker
> arms. The date codes are 3D10 and 3D26. The combustion chambers are more
> angular around the spark plug.
>
> About the valve spring pockets on Hi-Po 289 heads. Page 28, in Ford
> Performance by Pat Ganahl has pictures of the cast in cups to hold the
valve
> springs from walking. Neither set of the heads above have these seats, by
the
> way.
> Hope this helps.
>
> Tom
> B9470099
|