Subject : Pictures Please - Ford 351 - Ford351C - Ford351W

"trainfan1" > wrote in message
news
> The heads were designed for the Boss 302, production of which pre-dates
> any Cleveland/335 engine.

Any production Cleveland engine anyway.

The Cleveland is known to have existed in pre production form before the
Boss 302 ever went into production, and the popular theory is that Ford made
the two engines share a lot of physical dimensions, like cylinder head bolt
spacings for example, to reduce machine tool production costs. The failure
of the Tunnel Port Windsor head lead a couple of engineers to experiement
with the new Cleveland head on the Windsor short motor, and the outcome of
that experiment was the Boss 302 we know today.

> The cooling arrangement was slightly modified for the 335 family block.

As far as I can tell, the only difference between Boss 302 cylinder heads
and early production 4v cylinder heads is the screw in studs, and slightly
bigger valves of the Boss head. Laid side by side on a bench, the gasket
faces look identical.

--
Regards,
Noddy.

Noddy wrote:
> "trainfan1" > wrote in message
> news >
>> The heads were designed for the Boss 302, production of which pre-dates
>> any Cleveland/335 engine.
>
> Any production Cleveland engine anyway.
>
> The Cleveland is known to have existed in pre production form before the
> Boss 302 ever went into production, and the popular theory is that Ford made
> the two engines share a lot of physical dimensions, like cylinder head bolt
> spacings for example, to reduce machine tool production costs. The failure
> of the Tunnel Port Windsor head lead a couple of engineers to experiement
> with the new Cleveland head on the Windsor short motor, and the outcome of
> that experiment was the Boss 302 we know today.
>

I'll buy that.

>> The cooling arrangement was slightly modified for the 335 family block.
>
> As far as I can tell, the only difference between Boss 302 cylinder heads
> and early production 4v cylinder heads is the screw in studs, and slightly
> bigger valves of the Boss head. Laid side by side on a bench, the gasket
> faces look identical.

There is a minor difference in the water jacket openings not reflected
in the gaskets.

Rob
>
>

clifto wrote:

> disston wrote:
>
>>I wonder if you know the Cleveland and the Windsor are not related.
>
>
> They had the same block and crank, didn't they?

No!


> And then there was the 351M (modified), which was closer to the C than
> to the W IIRC.

The 351M and 400 are both related to the 351C. The 351W is related to
the 302.