[Tigers] Big Valve 260

[Larry Mayfield]

Interesting discussion regards valve sizes. One thing to remember is 
that there was one earlier small block ford: the 221. If I had to hazard 
a guess, the small valve 260 motors simply used up the supply of 221 
heads before moving on to the larger size. That would be typical Ford.

mayf

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drmayf
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On 8/27/2012 4:36 PM,  Ron Fraser wrote:
> It appear that what I wrote in Reply disappeared. So here is my Reply
>
> Tod
>      As with any book source, you have to be aware that errors can creep into
> the text.   There are a few in Monroe's book and a few in the TBON; probably
> due to passing on written information without double checking.   I review my
> information constantly to try an keep it correct but things happen and I
> probably still have some fact wrong.   I'm using Bob Mannel's book - Mustang
> and Ford Small Block V8 as my main source of information.
>
> About Jan 7, 1963 the 260 engine block was cast with 3 freeze plugs and the
> 7" mounting pattern - C3OE-6015B block; this made the 260 block similar to
> the 289 block configuration.
>
> The C3OE-B head has 1.39" exhaust valve and 1.59" intake valve
>
> July 1963 - C4OE-6015B 260 engine block was cast.    Note this date could be
> wrong.
> I don't have a clear introduction date for the C4OE-A heads with 1.67"
> intake and 1.45" exhaust valves; similar to the standard 289 valves.
> The C4OE-A heads continued to the end of the 260 build.
>
> May 1964 - C4OE-6015E 260 engine block casting; this is the last casting
> change for the 260 block
>
> Tiger engine group T15KL = Aug 15, 1963 - this means that the C3OE-B and
> C4OE-B engine blocks could have been used.
> The C3OE-B heads are available and possibly the C4OE-A.
>
>      The big question here is what configuration did Ford put together for
> that first group of 260 engines.   Did Ford use left over parts or the new
> castings.   I don't know and we may never know.    I don't think any of the
> T15KL engines exist any more.   They all seem to have been replaced with 289
> engines.
>
> Ron Fraser
>
>
> -----Original Message-----
> From: tigers-bounces at autox.team.net [mailto:tigers-bounces at autox.team.net]
> On Behalf Of Ron Fraser
> Sent: Monday, August 27, 2012 5:51 PM
> To: 'Tod Brown'; tigers at Autox.Team.Net; Rollright at aol.com;
> atwittsend at verizon.net
> Subject: Re: [Tigers] Big Valve 260
>
>
> Hello All:
>
>
>
> Ron's information regarding the engines in the Tiger raises the question as
> to the exact configuration of the engines in early Tigers, especially the
> intake valve diameter.  His comments got me interested and I dug out my copy
> of Monroe's "How To Rebuild Your Small Block Ford".  According to Monroe,
> 260 blocks with casting numbers C20E-F and C30E-B used intake valves with a
> diameter of 1.59 inches.  These were blocks made in '62 & '63, he says.
> Later blocks, with casting # C40E-B, manufactured in '64, used 1.67 inch
> valves.  Ron raises the possibility that some of the early blocks may have
> been used in Tigers.  According to Monroe, the changeover to the C40 blocks
> took place in February '63.  Assuming the heads were changed at the same
> time (probably a big assumption), the question then becomes, "when were the
> Tiger engines purchased?"  Does anyone have an answer?  It seems that I
> remember seeing the purchase dates for the different engine batches, but I
> cannot remember where.
>
> The other interesting piece of information from Monroe is that the early
> blocks (presumably the C20 & C30 numbered) had two freeze plugs on each side
> of the block as well as 6-inch engine mount hole spacing.  Later blocks
> (after Feb '63) had three freeze plugs and 7-inch spacing.  If anyone has an
> early Tiger (vinyl dash?), perhaps they could climb under and take a look at
> the engine in their car and tell us how many freeze plugs it has.
>
> None of this is probably definitive, but it might help sorting it all out.
> Many thanks to Ron for all his efforts in collecting as much information as
> he has.
>
> Cheers,
>
> Tod
>
> B382002384LRXFE
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